新颖的[CuI(dpq)2]+配合物阳离子修饰的砷钒酸盐[Cu(dpq)2]4[As8V14O42(H2O)]·2H2O的水热合成与结构表征

采用水热方法制备了一个新颖的CuI(dpq)2]+配合物阳离子修饰的砷钒酸盐Cu(dpq)2]4As8V14O42(H2O)]·2H2O, X射线单晶衍射结果表明, 该化合物的结构是由4个CuI(dpq)2]+阳离子和1个As8V14O42(H2O)]4-簇阴离子以及2个结晶水组成的, 簇阴离子内部包含一个孤立的水分子.

Hydrothermal Synthesis and Structure Characterization of a Novel [CuI(dpq)2]+ Complex Cations Modified Arsenic-Vanadium Polyoxometalate [Cu(dpq)2]4[As8V14O42·(H2O)]·2H2O

A novel inorganic-organic hybrid compound Cu(dpq)2]4As8V14O42(H2O)]·2H2O(dpq=dipyrido3,2-d:2',3'-f]quinoxaline) was synthesized under the hydrothermal condition and its structure was characterized via single-crystal X-ray diffraction, elemental analysis, IR and XPS spectra. The title compound crystallizes in a monoclinic crystal system, space group P21/c with crystal parameters a=1.8973(3) nm, b=2.5816(2) nm, c=2.8941(2) nm, β=106.61(2)°, V=13.5846(12) nm3, Z=4, R1=0.0674, wR2=0.1750. It possesses a spherical As8V14O42(H2O)]4- cluster anion, four CuI(dpq)2]+ counter cations and two lattice water molecules. The cationic complexes form ca. 0.8 nm×0.8 nm stellate channels along the c axis through strong π…π stacking interactions due to the multiple aryls in the dpq ligands. The polyoxoanions are embedded in the channels through extensive C—H…O short contact interactions.