Soft template synthesis in the cobalt(III)-1,2-diaminoethane-1,2-dithione- propanone triple system on a K[CoFe(CN)6]-gelatin-immobilized matrix

Complexation of CoIII, in the form of K[CoFe(CN) 6]-gelatin-immobilized matrix, in contact with aqueous-alkaline solutions (pH ∼ 12) containing 1,2-diaminoethane-1,2-dithione and propanone, has been studied. Template synthesis leading to a chelate CoIII coordination compound with a tetradentate N,N,S,S-donor ligand identified as 4,4,6-trimethyl-1,9-diamino-1,9-dimercapto-3,7-diazanon-3-en-2,8-dithione and hydroxy co-ligand occurs under these specific conditions. 1,2-Diaminoethane-1,2- dithione and propanone are the ligand synthons in this process. © 2008 Springer Science+Business Media B.V

On template synthesis in the ternary system Ni(II)-thiosemicarbazide- diacetyl

A new complexation process in the ternary system Ni(II)- hydrazinomethanethioamide (thiosemicarbazide)-2,3-butanedione (diacetyl) has been studied. Complexation occurs in an aqueous ethanol solution and in nickel(II) hexacyanoferrate(II) gelatin-immobilized matrix systems. It has been shown that, under these conditions, the process involves the "self-assembly" (template synthesis) of Ni(II) macrotricyclic complexes with a new chelating ligand - 4,5-dimethyl-1,8-dimercapto-2,3,6,7- tetraaza-1,3,5,7-octatet-raene-1,8-diamine with the (NSSN) coordination of donor atoms to the metal atom. © 2013 Pleiades Publishing, Ltd

Copper(II)- heterocyclic compounds with 4,5-dimethyl-2,3,6,7-tetraazaoctadien-3,5-dithiohydrazide-1,8 and 3,10-dithio-6,7,13,14-tetramethyl-1,2,4,5,8,9,11, 12-octaazacyclotetradekatetraen-1,5,7,12 obtained in gelatin- immobilized matrix as a result of template synthesis

Soft template synthesis of macrocyclic coordination compounds with 4,5-dimethyl-2,3,6,7-tetraaza-octadien-3,5-dithiohydrazide-1,8 and 3,10-dithio-6,7,13,14-tetramethyl-1,2,4,5,8,9,11, 12-octaazacyclo-tetradekatetraen-1,5,7,12 in the triple Cu(II)-thiocarbohydrazide- 2,3- butanedione system in the copper(II)hexacyanoferrate(II) gelatin-immobilized matrix has been carried out. Also, it has been established that similar process in the nickel(II)hexacyanoferrate(II) matrices does not occur under such conditions

Mild template synthesis of copper(II)-containing macrocyclic compounds in the CuII-1,2-diaminoethanedithione-1,2-ethanedione-1,2 and Cu II-1,2-diamino-ethanedithione-1,2-butanedione-2,3 triple systems into Cu2[Fe(CN)6]-gelatin-immobilized matrix implantates

The complexing processes in the CuII-1,2-diaminoethanedithione- 1,2-ethanedione-1,2 and CuII-1,2-diaminoethanedithione-1,2- butanedione-2,3 triple systems occuring in the copper(II)hexacyanoferrate(II) gelatin-immobilized matrix in contact with aqueous alkaline solutions (pH~12) containing 1,2-diaminoethanedithione-1,2 and ethanedione-1,2 or butanedione-1,2 under room temperature, and between MCl2, 1,2-diaminoethanedithione- 1,2 and ethanedione-1,2 or butanedione-1,2 in the ethanol solutions, upon heating up to ~80 °C, have been studied. In both systems indicated, template synthesis occurs in the gelatin-immobililized matrix but does not occur in the ethanol solution. As a result of template synthesis, macrocyclic CuII chelates with 2,7-dithio-3,6-diazaoctadien-3,5-dithioamide-1,8 and its 4,5-dimethylsubstituted derivative are formed in the gelatin-immobililized matrix. 1,2-diaminoethanedithione-1,2 and ethanedione-1,2 or butanedione-2,3 are the ligand synthons in the processes indicated. © 2007 Springer

Soft template synthesis of cobalt(III) chelates with 2,8-dithio-3, 7-diaza-5-oxa-nonandithioamide-1,9 and with 2,7-dithio-3,6-diazaoctadien-3, 5-dithioamide-1,8 into cobalt(III)hexacyanoferrate(II) gelatin-immobilized matrix materials

The complexing processes in the triple CoIII-dithiooxamide- methanal and CoIII-dithiooxamide-glyoxal systems taking place in the KCoFe(CN)6-gelatin-immobilized matrix in contact with aqueous-alkaline solutions (pH∼12) containing (dithiooxamide + methanal) and (dithiooxamide + glyoxal), have been studied. Template synthesis leading to macrocyclic CoIII coordination compounds with tetradentate. N,N,S,S-donor ligands-(2,8-dithio-3,7-diaza-5-oxanonandithioamide-1,9) and (2,7-dithio-3,6-diazaoctadien-3,5-dithioamide-1,8) occurs under these specific conditions. Dithiooxamide, methanal and glyoxal are the ligand synthons in these processes

Template synthesis into gelatin-immobilized matrix as perspective method of obtaining supramolecular macroheterocyclic compounds

Template synthesis processes proceeding for MII ion - ligand synthon I - ligand synthon II triple systems (M= Co, Ni, Cu) into solutions and gelatin-immobilized matrix, have been obtained and analyzed. It has been shown that final results of these processes are distinguished extremely considerably. The distinction predicted has been displayed by examples of template synthesis for some MII-(N,S)-,(N,O,S)-ambidentate ligand synthon - (C=O)-containing ligand synthon in water-ethanol solutions and metalhexacyanoferrate gelatin-immobilized matrix implantates. The quantumchemical calculation of structures of macrocyclic coordination compounds formed as a result of template processes, has been carried out with using DFT B3LYP method. © ISUCT Publishing

Mild template synthesis in the Cu(II)-dithiomalonamide-formaldehyde ternary system

Complex formation in the ternary system Cu(II)-dithiomalonamide H 2NC(=S)CH2C(=S)NH2-formaldehyde in aqueous ethanol containing copper(II) chloride, dithiomalonamide and formaldehyde, as well as in thin-layer gelatin-immobilized copper(II) hexacyanoferrate(II) matrix implants contacting with alkaline (pH > 10) aqueous solutions containing the same organic compounds was studied. In the first case, a Cu(II) bischelate complex with singly deprotonated dithiomalonamide is formed exclusively, whereas in the second case template synthesis occurs to form a macrocyclic CuL chelate (L is 1,11-diamino-1,11-disulfanyl-4,8-diaza-6-oxaundeca-1,10-diene-3,9- dithione). In the latter case, dithiomalonamide and formaldehyde function as ligsons. The above-mentioned chelate is not formed on direct contact of the reagents in aqueus ethanol both in the presence and in the absence of Cu(II). A scheme of chemical reactions that occur in the system under consideration was proposed. © 2008 MAIK Nauka

Ni(II)- and Cu(II)-Containing Heterocyclic Compounds with 4,4',6-trimethyl-2,8-dithio-3,7-diazanonen-6-dithioamide-1,9 Obtained in Gelatin-Immobilized Matrices in the Template Synthesis Process

Soft template synthesis of metalheterocyclic compounds with 4,4',6-trimethyl-2,8-dithio-3,7-diazanonen-6-dithioamide-1,9 in the triple systems M(II)- dithiooxamide- acetone (M= Ni, Cu) in the nickel(II)- and copper(II)hexacyanoferrate(II) gelatin- immobilized matrices has been carried out

Spectral and Thermodynamic Characteristics of Complexes of Seleno- and Thioacetals with Iodine

Seleno- and thioacetal complexes of iodine were studied spectrophotometrically. The spectral and thermodynamic parameters of the complexes are compared with the special features of the electronic and steric structure of the donor molecules and with the characteristics of tetracyanoethylene complexes of the same compounds

Template synthesis in the Cu(II)-dihydrazinomethanethione-acetone ternary system

Complex formation in the Cu(II)-dihydrazinomethanethione (H 2NHN-CS-NHNH2)-acetone ternary system in an ethanol solution containing CuCl2, dihydrazinomethanethione, and acetone, as well as on contact of gelatin-immobilized copper(II) hecacyanoferrate(II) with alkaline (pH >10) aqueous solutions containing the above organic compounds was studied. It was found that template synthesis is realized in both cases but gives different products: in the first case, a heteroligand chelate of CuL 1(OH) with 9-hydrazino-9-mercapto-4,6,6-trimethyl-2,3,7,8- tetraazanona-3,8-dienethiohydrazide and hydroxide ion is formed, while in the second, a chelate of CuL2 with 2,8,10,10,16-pentamethyl-3,4,6,7,11, 12,14,15-octaazaheptadeca-2,5,7,12,15-pentaene-5,13-dithiol. In both cases, dihydrazinomethanethione and acetone function as ligsons. A scheme of involved processes is suggested. © 2009 Pleiades Publishing, Ltd. Reerernces: