Bis{4-chloro-N′-[phen­yl(2-pyrid­yl)methyl­idene]benzohydrazidato-κ2 N′,O}cobalt(III) nitrate methanol disolvate

In the title compound, [Co(C19H13ClN3O)2]NO3·2CH3OH, the central CoIII atom in the cation is surrounded by two tridentate ligands in a distorted octa­hedral fashion by four N and two O atoms. Classical O—H⋯O hydrogen bonds link both methanol solvent mol­ecules with the nitrate anion

Poly[[chloridodimethanol(μ3-pyridine-2,3-dicarboxyl­ato)europium(III)] methanol monosolvate]

The asymmetric unit of the title compound, {[Eu(C7H3NO4)Cl(CH3OH)2]·CH3OH}n, contains one EuIII ion, one pyridine 2,3-dicarboxylate dianion (PDC), two CH3OH mol­ecules coordinating to the metal atom, one coordinating chloride and one lattice occluded CH3OH mol­ecule. In the crystal, each PDC anion coordinates to three adjacent EuIII ions by the pyridine N and O atoms of the carboxyl­ate groups. The EuIII cation is eightfold coordinated by four carboxyl­ate O atoms, one pyridine N atom, two MeOH and one chloride anion in the form of a distorted polyhedron. Extended coordination of the PDC ligand lead to the formation of a two-dimensional coordination polymer parallel to (10-1)

Bis[4-chloro-N′-(2-pyridyl­methyl­idene)benzohydrazidato]cobalt(III) nitrate sesquihydrate

In the title compound, [Co(C13H9ClN3O)2]NO3·1.5H2O, the central Co3+ atom in the cation is coordinated by four N and two O atoms from the two tridentate ligands in a distorted octa­hedral fashion. In the crystal, the cobalt complex cations are linked to the half-occupied and the fully occupied water mol­ecules, and the nitrate anion via classical inter­molecular O—H⋯O and O—H⋯N hydrogen bonds and weak C—H⋯O contacts

Morphological and Physiological Responses of Nine Ornamental Species to Saline Water Irrigation

To provide more species for landscapes where poor-quality irrigation water is used, salt tolerance of commonly used landscape plants should be characterized. Nine ornamental species, including six herbaceous and three woody, were irrigated with nutrient solution at electrical conductivity (EC) of 1.2 dS·m−1 (control) or saline solution at EC of 5.0 or 10.0 dS·m−1 (EC 5 or EC 10) for 8 weeks and their growth and physiological responses were determined. Although growth was reduced in orange peel jessamine (Cestrum ‘Orange Peel’) and mexican hummingbird bush (Dicliptera suberecta) as salinity increased, no obvious signs of stress or injury were observed, indicating that orange peel jessamine and mexican hummingbird bush were the most salt tolerant. Flame acanthus (Anisacanthus quadrifidus var. wrightii), rock rose (Pavonia lasiopetala), and ‘Dark knight’ bluebeard (Caryopteris ×clandonensis ‘Dark Knight’) had more growth reduction than that of orange peel jessamine and mexican hummingbird bush with minimal or no foliar damage in EC 5 and slight foliar damage in EC 10. Cardinal flower (Lobelia cardinalis) and mexican false heather (Cuphea hyssopifolia) exhibited mortality rates of 30% and 20%, severe foliar damage, and greater than 70% reduction in leaf area and dry weight in EC 10 compared with their respective controls. Although the growth reductions in butterfly blue (Scabiosa columbaria) were not as great as cardinal flower and mexican false heather, 40% of butterfly blue plants were dead with moderate foliar damage in EC 10. Therefore, cardinal flower, mexican false heather, and butterfly blue plants were considered as moderately salt sensitive. Eastern red columbine (Aquilegia canadensis) was the most salt sensitive among the species investigated with moderate foliar damage in EC 5 and all plants died in EC 10. Four out of the nine species tested had significant differences in net photosynthetic rate (Pn), stomatal conductance (gs), and/or relative chlorophyll content between the control and EC 10, and the difference varied with species. Shoot ion concentrations of the nine ornamentals were also affected by salinity levels and varied among species

Colorimetric detection of copper and efficient removal of heavy metal ions from water by diamine-functionalized SBA-15

SBA-15 functionalized with N-[3-(trimethoxysilyl)propyl]ethylene-diamine (TPED) was synthesized and used for the colorimetric detection of Cu2+ and removal of heavy metal ions in aqueous solutions. Compared to free SBA-15, the adsorption ability of diamine-functionalized SBA-15 (depicted as SBA-TPED) increased remarkably, the maximum adsorption capacity of SBA-TPED for Cu2+, Pb2+ and Zn2+ was 27.22, 96.43 and 12.16 mg g(-1), respectively. Furthermore, SBA-TPED exhibits high selectivity for Cu2+ with the relative selectivity coefficient of SBA-TPED for Cu2+/Pb2+ being over 10 and for Cu2+/Zn2+ being over 60. The naked-eye detection limit of SBA-TPED for Cu2+ is 0.95 ppm, and the determination of Cu2+ in real water samples also displays satisfactory results. Moreover, SBA-TPED possesses fast kinetics for removing Cu2+ with a saturation time of less than 30 min, and can be regenerated by simple acid treatment

汞离子磁性吸附剂的制备及应用

We developed an organic-inorganic hybrid material for selective removal of Hg~(2+) ion from water,by immobilizing rhodamine derivative onto the surface of core /shell Fe_3O_4@SiO_2 nanospheres (Fe_3O_4@SiO_2-R6G).With a saturation magnetization of 26.1 emu?g~(-1),the Fe_3O_4@SiO_2-R6G could be simply re-collected from water by an external magnet within a few minutes.Moreover,the Fe_3O_4@SiO_2-R6G showed high selectivity for adsorbing Hg~(2+) over other metal ions in aqueous solution.The maximum adsorption capacity for Hg~(2+) was 40.15 mumol?g~(-1).It could be easily recovered by treatment with a solution of tetrabutylammonium hydroxide and used repeatedly

Salt Tolerance of Six Switchgrass Varieties

Panicum virgatum (switchgrass) varieties were evaluated for salt tolerance in a greenhouse setting. Switchgrass ‘Cimarron’, ‘NL 94C2-3’, ‘NSL 2009-1’, ‘NSL 2009-2’ , ‘Kanlow’, and ‘Alamo’, five seedlings per pot, were irrigated with nutrient solution at electrical conductivity (EC) of 1.2 dS·m-1 (control) or salt solution at EC of 5.0 or 10.0 dS·m-1 for 36 days. Plant height, leaf area, number of tillers, and dry weight were significantly different among salt treatments and among varieties, but no interactive effects occurred . Compared to control, salt solution at EC of 5.0 dS·m-1 and 10.0 dS·m-1 reduced the switchgrass height by 6.8% and 29.6%, leaf area by 20.8% and 55.9%, number of tillers by 14.6% and 31.3%, dry weight by 23.1% and 55.7%, respectively. Switchgrass ‘Alamo’, ‘Kanlow’, and ‘NSL 2009-2’ were taller than ‘NL94C2-3’, ‘NSL 2009-1’, and ‘Cimarron’. Tiller numbers in ‘NSL 2009-2’ and ‘NSL 2009-1’ were similar to those in ‘NL94C2-3’ and ‘Cimarron’, while higher than those in ‘Alamo’ and ‘Kanlow’. The dry weight of ‘NSL 2009-2’ was similar to that of ‘NSL 2009-1’ and ‘Kanlow’, but greater than that of ‘NL94C2-3’ and ‘Alamo’. ‘Cimarron’ had the smallest dry weight. In conclusion, salinity negatively affected the switchgrass biomass, and switchgrass ‘NSL 2009-2’ and ‘NSL 2009-1’ were more tolerant to salt than other tested varieties