Hydrothermal Synthesis and Structure Characterization of a Novel [CuI(dpq)2]+ Complex Cations Modified Arsenic-Vanadium Polyoxometalate [Cu(dpq)2]4[As8V14O<SUB

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Hydrothermal Synthesis and Structure Characterization of a Novel [Cu^I(dpq)₂]⁺ Complex Cations Modified Arsenic-Vanadium Polyoxometalate [Cu(dpq)₂]⁴[As₈V₁₄O_{DONG Bao-Xia, ZHANG Peng-Peng, PENG Jun*

Key Laboratory of Polyoxometalate Science of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China

Received:2007-02-05

Revised:1900-01-01

Online:2007-06-10

Published:2007-06-10

Contact:
PENG Jun

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Abstract: 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 [Cu^I(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.

Key words: Hydrothermal synthesis, Polyoxometalate, Crystal structure

CLC Number:

O614

TrendMD:

DONG Bao-Xia, ZHANG Peng-Peng, PENG Jun*. Hydrothermal Synthesis and Structure Characterization of a Novel [Cu^I(dpq)₂]⁺ Complex Cations Modified Arsenic-Vanadium Polyoxometalate [Cu(dpq)₂]⁴[As₈V₁₄Odoi: .

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