A novel inorganic-organic hybrid compound [Cu(dpq)2]4[As8V14O42(H2O)]·2H2O(dpq=dipyrido[3,2-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.
A novel heteropoly compound, containing two kinds of coordinated cations, [K(H2O)2Ni(H2O)6]2, has been synthesized through routine process and characterized by elemental analyses, IR, 51V NMR and single crystal X-ray diffraction. It crystallizes in the triclinic system, space group P1 with a=0.873 82(17) nm, b=1.075 4(2) nm, c=1.111 1(2) nm, α=65.10(3)°, β=75.01(3)°, γ=70.63(3)°, V=0.884 8(3) nm3 and Z=1. The X-ray analysis reveals that the two kinds of coordinated cations are linked by three shared coordinated water molecules, and K+ cations coordinate with ten oxygen atoms: five of which come from V10O286- anion, the other five from water molecules. The title compound exhibits extended 2D array building up of V10O286- groups connected by ten-coordinated K+ cations. The hexahydrated nickel cations Ni(H2O)62+ lie in neat apposition to three adjacent V10O286- clusters. CSD: 413271.
