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- Title
Syntheses, structures and properties of three neutral bisupporting heteropolyoxometalates.
- Authors
Liu, Hong-Bo; Sun, Yu; Chen, Ya-Guang; Meng, Fan-Xia; Shi, Dong-Mei
- Abstract
Three neutral polyoxometalates [PVW11O40{M(phen)2H2O}2] · 3H2O (phen = 1,10'-phenanthroline, M=Co 1, Zn 2, Ni 3) are composed of water and the neutral Keggin-type polyoxometallate covalently linking a pair of transition metal complex fragments on opposite sides. The transition metal lies in the center of a distorted octahedron. Multi hydrogen-bonding interactions between coordinated waters of neutral polyoxometalate molecules and terminal oxygen atoms of Keggin units and between bridging oxygens of Keggin units and lattice water create a two dimensional layer and between the layers there exist van der Waals forces. The framework of the neutral molecule begins to decompose at ca 500°C. Compound 1 exhibits a weak antiferromagnetic interaction in the 2-300 K range.
- Subjects
POLYOXOMETALATES; COORDINATION compounds; METALLIC oxides; TRANSITION metals; THERMAL analysis
- Publication
Journal of Coordination Chemistry, 2008, Vol 61, Issue 19, p3102
- ISSN
0095-8972
- Publication type
Academic Journal
- DOI
10.1080/00958970802001780