Synthesis and characterization of a new organic–inorganic hybrid material
[K3(C5H9NO2)11][NaP5W30O110].15H2O
M. H. Alizadeh, M. Mirzaei
Department of Chemistry, Ferdowsi University, Mashhad, Khorassan 91779, Iran
E-mail address: mhalizadehg@yahoo.com
Heteropolyacids and polyoxometalates (hereafter as POMs) of the transition metals have
attracted much recent attention because of their possible application in medicine,
catalysis, energy storage, molecular electronics, ceramics and theoretical studies [1-4].
POMs can function as molecular acceptors, and they form novel molecular assemblies
with a number of organic donors containing N, S and O atoms, i.e. amino acids,
quinolines, TTF, crown ethers [5, 6]. To our knowledge, preyssler anion is one of the
largest tungstophosphate cluster so far used in construction of modified or extended
POMs structure, although the tungstophosphate is one of the richest subclass of POMs.
Regarding to lots of large POMs clusters have been obtained in recent years, the
modification or linkage of POMs is still limited to small POMs clusters such as
Lindquist, Anderson and Keggin-type anions et al. The modification or linkage of large
POMs clusters has rarely been explored. The introduction of large clusters into the
modifying or linking chemistry of POMs could result in the formation of many novel
POMs of unprecedented structures and interesting properties, owing to their differently
structural features and properties compared with small POMs clusters. This paper
describes for the first time, the synthesis and properties of a new hybrid base on preyssler
anion and proline amino acid. The title compound has been synthesized and characterized
by elemental analysis, infrared and proton nuclear magnetic resonance. The proline
cations and preyssler anions are held together into a complex network through hydrogenbonding and electrostatic interactions. It should be said that many other characterizations
and studies on this category of hybrids are under investigation.
References
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[3] M.H. Alizadeh, J.S. Emampour, A.R. Salimi and H. Razavi Spectrochimica Acta Part
(in press)
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[5] Katsoulis, D.E. Chem. Rev. (1998) 359.
[6] M.H Alizadeh, K.Travis Holman, M. Mirzaei, H. Razavi, Polyhedron 25 (2006) 1567.