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Chemical Research in Chinese Universities ›› 2004, Vol. 20 ›› Issue (3): 277-280.

• Articles • Previous Articles     Next Articles

A Novel Layered Complex with Rhomboidal Channels: Hydrothermal Synthesis, Crystal Structure, and Properties of Cu(4,4′-bipy)2(H2PO4)2(H2O)2 (bipy=bipyridine)

MAO Hong-yan1,2, LIU Hong-lei2, ZHANG Hong-yun2, XU Chen2, WANG En-bo1, HAN Hua-yun2, WU Qing-an2, ZHU Yu2   

  1. 1. Faculty of Chemistry, Northeast Normal University, Changchun 130024, P. R. China;
    2. Department of Chemistry, Zhengzhou University, Zhengzhou 450052, P. R. China
  • Received:2003-01-23 Online:2004-06-24 Published:2011-08-06
  • Supported by:

    Supported by the Natural Science Foundation of Henan Province(No.0211020300) and the Natural Science Foundation of Henan Education Department(No.20011500027) and the National Natural Science Foundation of china(No.20271046).

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Abstract: The combination of both 4,4′-bipyridine(4,4′-bipy) and dihydrogen phosphate anion ligands with copper(Ⅱ) results in the formation of a novel layered compound Cu(4,4′-bipy)2(H2PO4)2(H2O)2. The crystal structure comprises discrete neutral Cu(4,4′-bipy)2(H2PO4)2(H2O)2 units. The copper atom, located on the crystallographic twofold axis, is coordinated with two nitrogen atoms of terminal 4,4′-bipy ligands and two water molecules at the equatorial positions, and two dihydrogen phosphate oxygen atoms at the axial positions, forming an elongated octahedron. The complex is a two-dimensional distorted rhomboidal network possessing two kinds of rhomboids with dimensions of ca. 1.6792 nm×0.3203 nm and 1.2778 nm×0.3198 nm, respectively. The two-dimensional networks are stacked parallelly on each other along c-axis to give an extended three-dimensional channel network with an interlayer distance of ca. 0.5030 nm. Crystal data: triclinic, space group P1, a=1.0253(2) nm, b=1.4501(3) nm, c=0.79715(16) nm, α=97.91(3)°, β=90.99(3)°, γ=85.54(3)°, V=1.1703(4) nm3, Z=2, R=0.0892, wR=0.2451.

Key words: Phosphate, 4,4′-Bipyridine, Copper(Ⅱ) complex, Channel structure, Hydrothermal synthesis