Inorganic-organic hybrid structure: Synthesis, structure and magnetic properties of a cobalt phosphite-oxalate, [C{sub 4}N{sub 2}H{sub 12}][Co{sub 4}(HPO{sub 3}){sub 2}(C{sub 2}O{sub 4}){sub 3}]
- Framework Solids Laboratory, Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012 (India)
A hydrothermal reaction of a mixture of cobalt (II) oxalate, phosphorous acid, piperazine and water at 150{sup o}C for 96h followed by heating at 180{sup o}C for 24h gave rise to a new inorganic-organic hybrid solid, [C{sub 4}N{sub 2}H{sub 12}][Co{sub 4}(HPO{sub 3}){sub 2}(C{sub 2}O{sub 4}){sub 3}], I. The structure consists of edge-shared CoO{sub 6} octahedra forming a [Co{sub 2}O{sub 10}] dimers that are connected by HPO{sub 3} and C{sub 2}O{sub 4} units forming a three-dimensional structure with one-dimensional channels. The amine molecules are positioned within these channels. The oxalate units have a dual role of connecting within the plane of the layer as well as out of the plane. Magnetic susceptibility measurement shows the compound orders antiferromagnetically at low temperature (T{sub N}=22K). Crystal data: I, monoclinic, space group=P2{sub 1}/c (No. 14). a=7.614(15), b=7.514(14), c=17.750(3)A, {beta}=97.351(3){sup o}, V=1007.30(3)A{sup 3}, Z=2, {rho}{sub calc}=2.466g/cm{sup 3}, {mu}{sub (MoK{alpha}}{sub )}=3.496mm{sup -1}, R{sub 1}=0.0310 and wR{sub 2}=0.0807 data [I>2{sigma}(I)].
- OSTI ID:
- 20729040
- Journal Information:
- Journal of Solid State Chemistry, Vol. 178, Issue 7; Other Information: DOI: 10.1016/j.jssc.2005.05.020; PII: S0022-4596(05)00235-5; 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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