A novel cobalt(II)-molybdenum(V) phosphate organic-inorganic hybrid polymer
- Department of Chemistry, CICECO, University of Aveiro, 3810-193 Aveiro (Portugal)
- Department of Physics, CICECO, University of Aveiro, 3810-193 Aveiro (Portugal)
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW (United Kingdom)
A new organic-inorganic hybrid cobalt(II)-molybdenum(V) phosphate polymer incorporating piperazine (pip) (H{sub 2}pip){sub 3}[Co{sub 3}Mo{sub 12}O{sub 24}(OH){sub 6}(PO{sub 4}){sub 8}(H{sub 1.5}pip){sub 4}].5(H{sub 2}O), was prepared under hydrothermal conditions. As revealed by single-crystal X-ray diffraction studies, the material is modular, built from a secondary building block composed of two anionic hexameric polyoxomolybdophosphate [Mo{sub 6}O{sub 12}(OH){sub 3}(PO{sub 4}){sub 4}]{sup 9-} moieties, bridged by a central octahedral Co{sup 2+} centre. The sandwich-type {l_brace}Co[Mo{sub 6}O{sub 12}(OH){sub 3}(PO{sub 4}){sub 4}]{sub 2}{r_brace}{sup 16-} dimers are connected via tetrahedral Co{sup 2+} metal centres, forming an infinite one-dimensional polymer. The compound constitutes the first example of a reduced sandwich-type cobalt-molybdenum phosphate in which the organic moiety (pip) is effectively coordinated to the inorganic backbone of the polymer, in this case via the tetrahedrally coordinated Co{sup 2+} centres. The magnetic behaviour of this material was investigated in the temperature range 4-298 K.
- OSTI ID:
- 20785015
- Journal Information:
- Journal of Solid State Chemistry, Vol. 179, Issue 5; Other Information: DOI: 10.1016/j.jssc.2006.02.001; PII: S0022-4596(06)00084-3; Copyright (c) 2006 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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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
COBALT COMPOUNDS
COBALT IONS
HYDROTHERMAL SYNTHESIS
MAGNETIC PROPERTIES
MOLYBDENUM PHOSPHATES
MONOCRYSTALS
PIPERAZINES
POLYMERS
TEMPERATURE RANGE 0000-0013 K
TEMPERATURE RANGE 0013-0065 K
TEMPERATURE RANGE 0065-0273 K
TEMPERATURE RANGE 0273-0400 K
THERMAL GRAVIMETRIC ANALYSIS
X-RAY DIFFRACTION