摘要
A new organic-inorganic hybrid sandwich-type polyoxotungstate [Cu（dien）-（H2O）2]2[{Cu（dien）（H2O）}3{Cu（4.5）W（0.5）（B-α-Sb W9O（33））2}]（OH）4·7H2O（1, dien = diethylenetriamine） has been hydrothermally synthesized and structurally characterized by elemental analyses, IR spectroscopy, TG analysis, and single-crystal X-ray diffraction analysis. Crystal data for 1： monoclinic, C2/c, a = 31.527（3）, b = 13.9309（13）, c = 24.297（2） A, β = 1108.269（2）°, V = 10133.2（17） A3, Dc = 4.024 g/cm3 and Z = 4. X-ray crystallographic study shows that the molecular structure of 1contains an infrequent penta-nuclearity {Cu4.5W0.5} cluster sandwiched polyanion [{Cu4.5W0.5（B-α-Sb W9O33）2}]6-, on which three [Cu（dien）（H2O）]2＋ complexes decorated as pendants. Interestingly, two [Cu（dien）（H2O）]2＋ pendants linked the two neighboring sandwich-type polyanions via double Cu-μ2-O-W bridges, resulting in a 1-D chain. The magnetic measurements show compound 1exhibits obvious antiferromagnetic interactions.
A new organic-inorganic hybrid sandwich-type polyoxotungstate [Cu（dien）-（H2O）2]2[{Cu（dien）（H2O）}3{Cu（4.5）W（0.5）（B-α-Sb W9O（33））2}]（OH）4·7H2O（1, dien = diethylenetriamine） has been hydrothermally synthesized and structurally characterized by elemental analyses, IR spectroscopy, TG analysis, and single-crystal X-ray diffraction analysis. Crystal data for 1： monoclinic, C2/c, a = 31.527（3）, b = 13.9309（13）, c = 24.297（2） A, β = 1108.269（2）°, V = 10133.2（17） A3, Dc = 4.024 g/cm3 and Z = 4. X-ray crystallographic study shows that the molecular structure of 1contains an infrequent penta-nuclearity {Cu4.5W0.5} cluster sandwiched polyanion [{Cu4.5W0.5（B-α-Sb W9O33）2}]6-, on which three [Cu（dien）（H2O）]2＋ complexes decorated as pendants. Interestingly, two [Cu（dien）（H2O）]2＋ pendants linked the two neighboring sandwich-type polyanions via double Cu-μ2-O-W bridges, resulting in a 1-D chain. The magnetic measurements show compound 1exhibits obvious antiferromagnetic interactions.
基金
supported by the Foundation of Education Department of Henan Province(15A150037)
