A novel copper diphosphonate complex Cu{sub 4}(aedp){sub 2}(4,4'-bpy)(H{sub 2}O){sub 4} with three-dimensional framework structure
- Department of Chemistry, Zhengzhou University, Zhengzhou, Henan 450052 (China)
A novel copper organodiphosphonate complex containing a second ligand 4,4'-bipyridine (4,4'-bpy) based on 1-aminoethylidenediphosphonic acid (H{sub 4}aedp), Cu{sub 4}(aedp){sub 2}(4,4'-bpy)(H{sub 2}O){sub 4} (1), has been synthesized under hydrothermal conditions. Complex 1 adopts a three-dimensional framework structure assembled from {l_brace}Cu{sub 4}(aedp){sub 2}(H{sub 2}O){sub 4}{r_brace} layers and 4,4'-bpy bridges. Each {l_brace}Cu{sub 4}(aedp){sub 2}(H{sub 2}O){sub 4}{r_brace} unit consists of three crystallographically distinct Cu atoms. The Cu(1) atom has a distorted square pyramidal geometry, whereas the Cu(2) and Cu(3) atoms have a distorted elongated tetragonal octahedral geometry. The magnetic studies indicate that complex 1 show typical antiferromagnetic behaviors at low temperature, which is attributed to the superexchange couplings between Cu(II) centers through {mu}-O bridge in the phosphonate layers. Crystal data for 1: triclinic, space group P1-bar , a=8.0931(16), b=13.567(3), c=6.2185(12)A, {alpha}=90.55(3), {beta}=96.97(3), {gamma}=78.50(3){sup o}, V=664.1(2)A{sup 3}, Z=2.
- OSTI ID:
- 20784918
- Journal Information:
- Journal of Solid State Chemistry, Vol. 179, Issue 3; Other Information: DOI: 10.1016/j.jssc.2005.11.035; PII: S0022-4596(05)00572-4; Copyright (c) 2005 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
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