Biological and pomological characteristics of promising plum (Prunus domestica L.) genotypes developed at the Fruit Research Institute, Čačak

Код шест перспективних генотипова шљиве створених у Институту за воћарство у Чачку (хибриди 38/62/70, IV/63/81, 32/21/87, 34/41/87 и 22/17/87 и сорта Нада) испитиванe су најзначајније фенолошке особине (време цветања и зрења), репродуктивне особине (клијавост полена in vitro, квантитативни параметри раста поленових цевчица in vivo и иницијално и финално заметање плодова у варијантама самоопрашивања, слободног опрашивања и страноопрашивања) и помолошке особине (морфометрија плода и коштице, хемијски састав и органолептичка оцена плода), параметри бујности и родности, као и отпорност на вирус шарке шљиве и проузроковаче економски најзначајнијих гљивичних болести шљиве. Истраживања су обављена у колекционом засаду шљиве од 2009. до 2011. године у еколошким условима Чачка коришћењем стандардне методологије. Сорта Чачанска лепотица је послужила као стандард. Хибриди 38/62/70, 32/21/87, 34/41/87 и 22/17/87 су имали средње, хибрид IV/63/81 позно, а сорта Нада веома позно време цветања. Хибриди 38/62/70 и IV/63/81 су се одликовали раним, хибрид 32/21/87 средњим, а сорта Нада и хибриди 34/41/87 и 22/17/87 касним временом зрења. Сви проучавани генотипови, изузев сорте Нада, су се одликовали добром клијавошћу полена. Број поленових цевчица и локализација најдужих поленових цевчица у појединим регионима тучка у три термина фиксирања су варирали зависно од генотипа мајке, варијанте опрашивања, утицаја метеоролошких фактора и њихових међусобних интеракција. На основу вредности финалног заметања плодова у варијантама самоопрашивања и страноопрашивања утврђено је да: хибрид 32/21/87 и сорта Нада припадају групи генотипова ниског, хибриди 38/62/70 и IV/63/81 групи генотипова средњег, а хибриди 34/41/87 и 22/17/87 групи генотипова високог нивоа самооплодности; сорта Чачанска лепотица представља задовољавајућег опрашивача за хибриде IV/63/81 и 32/21/87 и доброг опрашивача за сорту Нада и хибриде 38/62/70, 34/41/87 и 22/17/87...Major phenological characteristics (time of flowering and maturation), reproductive traits (in vitro pollen germination, quantitative parameters of in vivo pollen tube growth and initial and final fruit set under self-, open- and cross-pollination), pomological characteristics (fruit and stone morphometry, chemical composition and organoleptic score of the fruit), vigor and productivity parameters, and resistance to plum pox virus and to causal agents of the most economically important fungal diseases were evaluated in six promising plum genotypes developed at the Fruit Research Institute, Čačak (hybrids 38/62/70, IV/63/81, 32/21/87, 34/41/87, 22/17/87 and cultivar ʻNadaʼ). Research was conducted in a plum collection orchard during 2009-2011 under environmental conditions of Čačak (Serbia) using standard methods. The plum cultivar ʻČačanska Lepotica’ was used as the control for comparison. Flowering time was medium in the hybrids 38/62/70, 32/21/87, 34/41/87 and 22/17/87 late in hybrid IV/63/81 and very late in cultivar ʻNadaʼ. The hybrids 38/62/70 and IV/63/81 were classified as early maturing, hybrid 32/21/87 matured mid-season, and cultivar ʻNadaʼ, as well as hybrids 34/41/87 and 22/17/87 had late maturing time. All genotypes tested, excepting cultivar ʻNadaʼ, showed good pollen germination. The number of pollen tubes and localization of the longest pollen tubes in certain regions of the pistil at three fixation terms varied with the mother's genotype, pollination treatment, effect of meteorological factors and their interactions. Final fruit set values under self- and cross-pollination showed the following: the rate of self-pollination was low in hybrid 32/21/87 and cultivar ʻNadaʼ, medium in hybrids 38/62/70 and IV/63/81, and high in hybrids 34/41/87 and 22/17/87; cultivar ʻČačanska Lepoticaʼ was a satisfactory pollenizer of hybrids IV/63/81 and 32/21/87, and a good pollenizer of cultivar ʻNadaʼ, and hybrids 38/62/70, 34/41/87 and 22/17/87. Compared to the control cultivar ʻČačanska Lepoticaʼ, vigor was lower in hybrid IV/63/81 and cultivar ʻNadaʼ. The highest yield was obtained in hybrid 22/17/87. Fruits of hybrids IV/63/81, 32/21/87, 34/41/87 and 22/17/87 were medium to large in size, and those of hybrid 38/62/70 and cultivar ʻNadaʼ were large..

Copper(II) complexes with different diamines as inhibitors of bacterial quorum sensing activity

Three copper(II) complexes, trans-[Cu(1,3-pd)(2)Cl-2]center dot H2O (Cu1; 1,3-pd is 1,3-propanediamine), trans-[Cu(2,2-diMe-1,3-pd)(2)Cl-2] (Cu2; 2,2-diMe-1,3-pd is 2,2-dimethyl-1,3-propanediamine) and trans-[Cu(1,3-pnd)(2)Cl-2]center dot H2O (Cu3; 1,3-pnd is (+/-)-1,3-pentanediamine), were synthesized and structurally characterized by elemental microanalyses, IR, electronic absorption and reflectance spectroscopy and molar conductivity measurements. The antimicrobial efficiency of the complexes against four clinically relevant microorganisms and their antiproliferative effect on the normal human lung fibroblast cell line MRC-5 were evaluated. Since in many bacteria, pathogenicity is regulated by an intercellular communication process called quorum sensing (QS), the effect of the copper(II) complexes Cu1-3 on bacterial QS was examined. The obtained results showed that these complexes inhibited violacein production in Chromobacterium violaceum CV026, indicating their anti-QS activity via the homoserine lactone (HSL) pathway. Two biosensor strains were used to determine which pathway, C4-HSL (N-butanoylhomoserine lactone) or 3OC12-HSL (N-(3-oxododecanoyl) homoserine lactone), was affected by the copper(II) complexes. The biological activities of the copper(II) complexes were compared with those for the nickel(II) complexes of the general formula trans-[Ni(L)(2)(H2O)(2)]Cl-2 (L = 1,3-pd, 2,2-diMe-1,3-pd and 1,3-pnd)

Properties of some Late Season Plum Hybrids from Fruit Research Institute Čačak

Since 1979 to 2012 fifteen plum cultivars were named and released in Fruit Research Institute, Čačak. Some of these cultivars, such as Čačanska Lepotica, Čačanska Rodna and Čačanska Najbolja are grown in most important plum growing countries in Europe. Also, these cultivars are used as parent cultivars in many plum breeding programs. In addition to the cultivars, large number of promising hybrids are created in Fruit Research Institute, Čačak and some of them, in this moment, are candidates for new cultivars. Therefore, in 2014 and 2015, we investigated the most important properties of four promising late season hybrids and standard cultivar ‘Stanley’. All four hybrids were harvested since beginning of September (34/41/87) until the beginning of the third decade of September (10/23/87). The earliest flowering time was recorded in hybrid 34/41/87 and the latest in standard cultivar ‘Stanley’. Hybrids 10/23/87 and 26/54/87 generally had the highest fruit weight and all three fruit dimensions. Also these hybrids had the highest content of total sugars and sucrose and highest pH value, but poorest total acids content. The highest content of invert sugars and total acids was recorded in hybrid 22/17/87. This hybrid also, had the highest yield per tree and per hectare while the hybrid 34/41/87 had the lowest these values. Standard cultivar ‘Stanley’ had the largest stone weight and the highest amount of soluble solids

Physicochemical and sensory characteristics of promising plum (Prunus domestica L.) genotypes bred at fruit research institute, Čačak

Five plum hybrids (38/62/70, IV/63/81, 32/21/87, 34/41/87 and 22/17/87) and newly released cultivar ‘Nada’, obtained by planned hybridisation and singled out within breeding programme at Fruit Research Institute, Čačak, were assessed for the main physical (fruit and stone weight and flesh percentage), chemical (soluble solids content, total and inverted sugars content, sucrose content, total acids content, pH value of fruit juice, ratio of soluble solids and total acids content and ratio of total sugars and total acids content) and sensorial (attractiveness, taste, aroma and consistency) traits compared with the standard cultivar ʻČačanska Lepoticaʼ. Results showed that the studied plum genotypes differed significantly in all of the assessed traits. Regarding the physical features, the best results were shown by hybrid 38/62/70, which had the highest fruit weight (56.92 g) and flesh percentage (96.91%), as well as by the new cultivar ‘Nada’, for which a larger fruit was observed in comparison to the standard (45.54 g and 42.24 g, respectively). Also, ‘Nada’ had better sensorial properties such as attractiveness, taste, aroma and consistency in relation to the other promising hybrids and the standard cultivar. From the aspect of all the studied sensorial characteristics, in addition to ‘Nada’, only hybrid 38/62/70 was aligned with the standard cultivar. Out of the studied genotypes, late ripening hybrid 22/17/87 had the best values of parameters of fruit chemical composition such as the soluble solids content (17.01%), total and inverted sugars contents (12.31% and 8.96%, respectively). The highest sucrose content (3.39%), pH value of fruit juice (3.51), as well as the highest ratio between soluble solids and total acids content (43.72) and ratio between total sugars and total acids content (32.58) were found in cultivar ‘Nada’. The highest total acids content (1.42%) was recorded in hybrid 32/21/87. Compared to ʻČačanska Lepoticaʼ, the same or better results in terms of the fruit chemical composition were determined in cultivar ‘Nada’ and hybrids 34/41/87 and 22/17/87. The study revealed existence of significant correlations between individual studied parameters of the fruit physical, chemical and sensorial properties

Biological and pomological characteristics of promising plum (Prunus domestica L.) genotypes developed at the Fruit Research Institute, Čačak

Код шест перспективних генотипова шљиве створених у Институту за воћарство у Чачку (хибриди 38/62/70, IV/63/81, 32/21/87, 34/41/87 и 22/17/87 и сорта Нада) испитиванe су најзначајније фенолошке особине (време цветања и зрења), репродуктивне особине (клијавост полена in vitro, квантитативни параметри раста поленових цевчица in vivo и иницијално и финално заметање плодова у варијантама самоопрашивања, слободног опрашивања и страноопрашивања) и помолошке особине (морфометрија плода и коштице, хемијски састав и органолептичка оцена плода), параметри бујности и родности, као и отпорност на вирус шарке шљиве и проузроковаче економски најзначајнијих гљивичних болести шљиве. Истраживања су обављена у колекционом засаду шљиве од 2009. до 2011. године у еколошким условима Чачка коришћењем стандардне методологије. Сорта Чачанска лепотица је послужила као стандард. Хибриди 38/62/70, 32/21/87, 34/41/87 и 22/17/87 су имали средње, хибрид IV/63/81 позно, а сорта Нада веома позно време цветања. Хибриди 38/62/70 и IV/63/81 су се одликовали раним, хибрид 32/21/87 средњим, а сорта Нада и хибриди 34/41/87 и 22/17/87 касним временом зрења. Сви проучавани генотипови, изузев сорте Нада, су се одликовали добром клијавошћу полена. Број поленових цевчица и локализација најдужих поленових цевчица у појединим регионима тучка у три термина фиксирања су варирали зависно од генотипа мајке, варијанте опрашивања, утицаја метеоролошких фактора и њихових међусобних интеракција. На основу вредности финалног заметања плодова у варијантама самоопрашивања и страноопрашивања утврђено је да: хибрид 32/21/87 и сорта Нада припадају групи генотипова ниског, хибриди 38/62/70 и IV/63/81 групи генотипова средњег, а хибриди 34/41/87 и 22/17/87 групи генотипова високог нивоа самооплодности; сорта Чачанска лепотица представља задовољавајућег опрашивача за хибриде IV/63/81 и 32/21/87 и доброг опрашивача за сорту Нада и хибриде 38/62/70, 34/41/87 и 22/17/87...Major phenological characteristics (time of flowering and maturation), reproductive traits (in vitro pollen germination, quantitative parameters of in vivo pollen tube growth and initial and final fruit set under self-, open- and cross-pollination), pomological characteristics (fruit and stone morphometry, chemical composition and organoleptic score of the fruit), vigor and productivity parameters, and resistance to plum pox virus and to causal agents of the most economically important fungal diseases were evaluated in six promising plum genotypes developed at the Fruit Research Institute, Čačak (hybrids 38/62/70, IV/63/81, 32/21/87, 34/41/87, 22/17/87 and cultivar ʻNadaʼ). Research was conducted in a plum collection orchard during 2009-2011 under environmental conditions of Čačak (Serbia) using standard methods. The plum cultivar ʻČačanska Lepotica’ was used as the control for comparison. Flowering time was medium in the hybrids 38/62/70, 32/21/87, 34/41/87 and 22/17/87 late in hybrid IV/63/81 and very late in cultivar ʻNadaʼ. The hybrids 38/62/70 and IV/63/81 were classified as early maturing, hybrid 32/21/87 matured mid-season, and cultivar ʻNadaʼ, as well as hybrids 34/41/87 and 22/17/87 had late maturing time. All genotypes tested, excepting cultivar ʻNadaʼ, showed good pollen germination. The number of pollen tubes and localization of the longest pollen tubes in certain regions of the pistil at three fixation terms varied with the mother's genotype, pollination treatment, effect of meteorological factors and their interactions. Final fruit set values under self- and cross-pollination showed the following: the rate of self-pollination was low in hybrid 32/21/87 and cultivar ʻNadaʼ, medium in hybrids 38/62/70 and IV/63/81, and high in hybrids 34/41/87 and 22/17/87; cultivar ʻČačanska Lepoticaʼ was a satisfactory pollenizer of hybrids IV/63/81 and 32/21/87, and a good pollenizer of cultivar ʻNadaʼ, and hybrids 38/62/70, 34/41/87 and 22/17/87. Compared to the control cultivar ʻČačanska Lepoticaʼ, vigor was lower in hybrid IV/63/81 and cultivar ʻNadaʼ. The highest yield was obtained in hybrid 22/17/87. Fruits of hybrids IV/63/81, 32/21/87, 34/41/87 and 22/17/87 were medium to large in size, and those of hybrid 38/62/70 and cultivar ʻNadaʼ were large..

Biological and pomological characteristics of promising plum (Prunus domestica L.) genotypes developed at the Fruit Research Institute, Čačak

Код шест перспективних генотипова шљиве створених у Институту за воћарство у Чачку (хибриди 38/62/70, IV/63/81, 32/21/87, 34/41/87 и 22/17/87 и сорта Нада) испитиванe су најзначајније фенолошке особине (време цветања и зрења), репродуктивне особине (клијавост полена in vitro, квантитативни параметри раста поленових цевчица in vivo и иницијално и финално заметање плодова у варијантама самоопрашивања, слободног опрашивања и страноопрашивања) и помолошке особине (морфометрија плода и коштице, хемијски састав и органолептичка оцена плода), параметри бујности и родности, као и отпорност на вирус шарке шљиве и проузроковаче економски најзначајнијих гљивичних болести шљиве. Истраживања су обављена у колекционом засаду шљиве од 2009. до 2011. године у еколошким условима Чачка коришћењем стандардне методологије. Сорта Чачанска лепотица је послужила као стандард. Хибриди 38/62/70, 32/21/87, 34/41/87 и 22/17/87 су имали средње, хибрид IV/63/81 позно, а сорта Нада веома позно време цветања. Хибриди 38/62/70 и IV/63/81 су се одликовали раним, хибрид 32/21/87 средњим, а сорта Нада и хибриди 34/41/87 и 22/17/87 касним временом зрења. Сви проучавани генотипови, изузев сорте Нада, су се одликовали добром клијавошћу полена. Број поленових цевчица и локализација најдужих поленових цевчица у појединим регионима тучка у три термина фиксирања су варирали зависно од генотипа мајке, варијанте опрашивања, утицаја метеоролошких фактора и њихових међусобних интеракција. На основу вредности финалног заметања плодова у варијантама самоопрашивања и страноопрашивања утврђено је да: хибрид 32/21/87 и сорта Нада припадају групи генотипова ниског, хибриди 38/62/70 и IV/63/81 групи генотипова средњег, а хибриди 34/41/87 и 22/17/87 групи генотипова високог нивоа самооплодности; сорта Чачанска лепотица представља задовољавајућег опрашивача за хибриде IV/63/81 и 32/21/87 и доброг опрашивача за сорту Нада и хибриде 38/62/70, 34/41/87 и 22/17/87...Major phenological characteristics (time of flowering and maturation), reproductive traits (in vitro pollen germination, quantitative parameters of in vivo pollen tube growth and initial and final fruit set under self-, open- and cross-pollination), pomological characteristics (fruit and stone morphometry, chemical composition and organoleptic score of the fruit), vigor and productivity parameters, and resistance to plum pox virus and to causal agents of the most economically important fungal diseases were evaluated in six promising plum genotypes developed at the Fruit Research Institute, Čačak (hybrids 38/62/70, IV/63/81, 32/21/87, 34/41/87, 22/17/87 and cultivar ʻNadaʼ). Research was conducted in a plum collection orchard during 2009-2011 under environmental conditions of Čačak (Serbia) using standard methods. The plum cultivar ʻČačanska Lepotica’ was used as the control for comparison. Flowering time was medium in the hybrids 38/62/70, 32/21/87, 34/41/87 and 22/17/87 late in hybrid IV/63/81 and very late in cultivar ʻNadaʼ. The hybrids 38/62/70 and IV/63/81 were classified as early maturing, hybrid 32/21/87 matured mid-season, and cultivar ʻNadaʼ, as well as hybrids 34/41/87 and 22/17/87 had late maturing time. All genotypes tested, excepting cultivar ʻNadaʼ, showed good pollen germination. The number of pollen tubes and localization of the longest pollen tubes in certain regions of the pistil at three fixation terms varied with the mother's genotype, pollination treatment, effect of meteorological factors and their interactions. Final fruit set values under self- and cross-pollination showed the following: the rate of self-pollination was low in hybrid 32/21/87 and cultivar ʻNadaʼ, medium in hybrids 38/62/70 and IV/63/81, and high in hybrids 34/41/87 and 22/17/87; cultivar ʻČačanska Lepoticaʼ was a satisfactory pollenizer of hybrids IV/63/81 and 32/21/87, and a good pollenizer of cultivar ʻNadaʼ, and hybrids 38/62/70, 34/41/87 and 22/17/87. Compared to the control cultivar ʻČačanska Lepoticaʼ, vigor was lower in hybrid IV/63/81 and cultivar ʻNadaʼ. The highest yield was obtained in hybrid 22/17/87. Fruits of hybrids IV/63/81, 32/21/87, 34/41/87 and 22/17/87 were medium to large in size, and those of hybrid 38/62/70 and cultivar ʻNadaʼ were large..

Copper(II) complexes with different diamines as inhibitors of bacterial quorum sensing activity

Three copper(II) complexes, trans-[Cu(1,3-pd)2Cl2]·H2O (Cu1; 1,3-pd is 1,3-propanediamine), trans-[Cu(2,2-diMe-1,3-pd)2Cl2] (Cu2; 2,2-diMe- -1,3-pd is 2,2-dimethyl-1,3-propanediamine) and trans-[Cu(1,3-pnd)2Cl2]·H2O (Cu3; 1,3-pnd is (±)-1,3-pentanediamine), were synthesized and structurally characterized by elemental microanalyses, IR, electronic absorption and reflectance spectroscopy and molar conductivity measurements. The antimicrobial efficiency of the complexes against four clinically relevant microorganisms and their antiproliferative effect on the normal human lung fibroblast cell line MRC-5 were evaluated. Since in many bacteria, pathogenicity is regulated by an intercellular communication process called quorum sensing (QS), the effect of the copper(II) complexes Cu1–3 on bacterial QS was examined. The obtained results showed that these complexes inhibited violacein production in Chromobacterium violaceum CV026, indicating their anti-QS activity via the homoserine lactone (HSL) pathway. Two biosensor strains were used to determine which pathway, C4-HSL (N-butanoylhomoserine lactone) or 3OC12-HSL (N-(3-oxododecanoyl)homoserine lactone), was affected by the copper(II) complexes. The biological activities of the copper(II) complexes were compared with those for the nickel(II) complexes of the general formula trans- -[Ni(L)2(H2O)2]Cl2 (L = 1,3-pd, 2,2-diMe-1,3-pd and 1,3-pnd). [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. 172036 and Grant no. 173048

Structural characterization and biological evaluation of polynuclear Mn (II) and Cd(II) complexes with 2,2-dimethyl-1,3-propanediamine-N,N,N ', N '-tetraacetate. The influence of ligand structure and counter cation on the complex nuclearity

New polynuclear manganese(II) and cadmium(II) complexes with 2,2-dimethyl-1,3-propanediamine-N,N, N',N'-tetraacetato ligand (2,2-diMe-1,3-pdta), {Ba[M(2,2-diMe-1,3-pdta)]center dot 3H(2)O}(n) (M = Mn (1) or Cd (2)) were synthesized and characterized by IR spectroscopy and single-crystal X-ray diffraction analysis. In addition, complex 2 was characterized by solution H-1 and C-13 NMR spectroscopy. Crystallographic analysis showed that 2,2-diMe-1,3-pdta ligand is hexadentately coordinated to each M(II) ion through the two nitrogen and four carboxylate oxygen atoms, whereas the one of these oxygen atoms is also involved in coordination to the second M(II) ion of the dinuclear [M-2(2,2-diMe-1,3-pdta)(2)](4-) unit in polymeric structures. Moreover, three of four carboxylic groups of 2,2-diMe-1,3-pdta ligand are additionally bonded to four Ba(II) ions, in three distinctive bridging coordination modes. Each Ba(II) ion is surrounded by ten oxygen atoms, seven belonging to carboxylate groups of 2,2-diMe-1,3-pdta, and three belonging to water molecules. The coordination environment around Mn(II) and Cd(II) ions could be assigned as a face capped octahedron, while coordination polyhedron around Ba(II) ion in these two complexes was described as a distorted sphenocorona. The antimicrobial potential of complexes 1 and 2 and corresponding metal salts used for their synthesis was evaluated against different bacterial and Candida spp. Both complexes showed selective antifungal activity against the tested Candida spp. compared to the bacterial strains, with the minimal inhibitory concentration (MIC) values in the range 3.12 - 12.50 mu M. Moreover, complex 1 caused the slightly decrease of hyphae length, while no significant influence on hyphal length of complex 2 was observed. With aim to assess the therapeutic profile of the complexes, their cytotoxicity was evaluated against the normal human lung fibroblast cell line (MRC-5)

SINTEZA I SPEKTROSKOPSKA KARAKTERIZACIJA NOVOG RASTVORA U ČVRSTOM STANJU KOJI SADRŽI Mg(II) I Cu(II) KOMPLEKSE SA HEKSADENTATNIM 1,3-PROPANDIAMIN-N,N,N’,N’-TETRAACETATO (1,3-PDTA) LIGANDOM: IN VITRO ANTIFUNGALNA AKTIVNOST 1,3-PDTA-Cu(II) KOMPLEKSA

New solid solution containing Mg(II) and Cu(II) complexes with hexadentate 1,3-propanediamine-N,N,N’,N’-tetraacetate ligand (1,3-pdta), [Mg(H2O)6][Mg0.5Cu0.5(1,3-pdta)].2H2O was synthesized and structurally characterized by elemental microanalyses, molar conductivity and spectroscopic (IR and UV-Vis) measurements. The spectroscopic data of [Mg(H2O)6][Mg0.5Cu0.5(1,3-pdta)].2H2O were compared with those for [Mg(H2O)6][Cu(1,3-pdta)].2H2O  complex of the known molecular structure determined by single-crystal X-ray diffraction analysis (Rychlewska et al., 2000). In vitro growth inhibition activity of [Mg(H2O)6][Mg0.5Cu0.5(1,3-pdta)].2H2O and [Mg(H2O)6][Cu(1,3-pdta)].2H2O against Colletotrichum acutatum and their effects on this fungus sporulation level are investigated. The obtained results showed that the highest percentage of inhibition for mycelium growth was achieved at a concentration of 500 µg/mL for the investigated complexes. The biological activities of the investigated complexes were compared with those for the commercial formulation of fungicide captan (Method 480 SC). Opisana je sinteza i spektroskopska karakterizacija (IR i elektronski apsorpcioni spektri) novog rastvora u čvrstom stanju koji sadrži Mg(II) i Cu(II) komplekse sa 1,3-propandiamin-N,N,N',N'-tetraacetato (1,3-pdta) ligandom, [Mg(H2O)6][Mg0.5Cu0.5(1,3-pdta)].2H2O. Spektroskopski podaci za [Mg(H2O)6][Mg0.5Cu0.5(1,3-pdta)].2H2O kompleks su upoređeni sa odgovarajućim podacima za [Mg(H2O)6][Cu(1,3-pdta)].2H2O kompleks poznate kristalne strukture. Ispitivana je in vitro antimikrobna aktivnost [Mg(H2O)6][Mg0.5Cu0.5(1,3-pdta)].2H2O i [Mg(H2O)6][Cu(1,3-pdta)].2H2O kompleksa prema fitopatogenoj gljivi Colletotrichum acutatum, koja uzrokuje antraknozu. Analiziran je uticaj različitih koncentracija [Mg(H2O)6][Mg0.5Cu0.5(1,3-pdta)].2H2O i [Mg(H2O)6][Cu(1,3-pdta)].2H2O kompleksa na rast micelija i na intenzitet sporulacije gljive. Dobijeni rezultati su pokazali da ovi kompleksi imaju najveću aktivnost pri koncentraciji od 500 µg/mL. Biološka aktivnost [Mg(H2O)6][Mg0.5Cu0.5(1,3-pdta)].2H2O i [Mg(H2O)6][Cu(1,3-pdta)].2H2O je upoređena sa odgovarajućom aktivnošću komercijalnog fungicida 480 SC (Kaptan)

Cobalt(III) complexes with (±)-1,3-pentanediamine-<i>N,N,N’,N’</i>-tetraacetate. The influence of nature of alkali and alkaline earth metal counter cations on the supramolecular association of the complex

The coordination of hexadentate (±)-1,3-pentanediamine-N,N,N’,N’-tetraacetate (1,3-pndta) ligand with Co(III) has been investigated. Four octahedral [Co(1,3-pndta)]− complexes containing different counter cations, Li[Co(1,3-pndta)]⋅4H2O (1a), Li[Co(1,3-pndta)]⋅2H2O (1b), K[Co(1,3-pndta)]⋅H2O (1c) and Ca[Co(1,3-pndta)]2⋅5H2O (1d), were synthesized and structurally characterized. Single-crystal X-ray diffraction analysis, IR, NMR (1H and 13C) and electronic absorption spectroscopy were used for characterization of 1a − d. The influence of the ethyl substituent of 1,3-propanediamine chain in 1,3-pndta and the nature of metal counter cation on the structural modalities of carboxylate bridging groups in 1a − d were established by comparing with the analogous [M(1,3-pdta)]n− (1,3-pdta = 1,3-propanediamine-N,N,N’,N’-tetraacetate) and [M(1,3-pndta)]n− complexes (M = Co(III), Cr(III) and Ni(II)). Our studies have shown that the supramolecular association of the complexes is primarily governed by the size of the alkali or alkaline earth metal counter cation and its templating ability, while ethyl substituents, in most cases, prevent the formation of 3D polymeric frameworks.</p