A Novel Polyoxometalate-Based Hybrid Materials Composed of Octamolybdate and Hexamuclear Copper Cluster Units

ABSTRACT

Self-assemble of aqueous solution of the Cu²⁺/molybdate/glyc-ine system results in {[NaCu₆(Gly)₈(H₂O)₂][Mo₈O₂₆Cu(Gly)₂]₂}_n·n{NaCu₆(Gly)₈(H₂O)₂}·n{Mo₈O₂₆[Cu(Gly)(GlyH)(H₂O)₂]₂} 15nH₂O 1, which exhibits the 0-D + 1-D supramolecular framework and in which the copper atoms show three kinds of coordination models: (1) in quadrilateral geometry, (2) in square-pyramidal geometry, and (3) in distorted octahedral geometry. The space group of the compound is P–1, with the lattice parameters: α = 89.036(5)°, β = 89.384(4)°, γ = 88.337(5) °, a = 12.559(4) Å, b = 14.441 (4)Å, c = 23.063(6) Å, and Z = 1.

KEYWORDS:

• Amino acid
• coordination models
• hexanuclear copper cluster
• hybrid material
• polyoxometalate

Acknowledgments

This work was supported by the National Natural Science Foundation of China (21373221, 21403236), Key Project of Science and Technology Plan of Fujian Province (2014H0007), the Fuzhou Technology Foundation (GY-Z12088). Authors acknowledge the financial support from the China Scholarship Council (CSC).