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https://www.ias.ac.in/article/fulltext/jcsc/123/02/0229-0239

Polyoxometalates; Anderson-type heteropolyanion; polyoxovanadate; extended structure; supramolecular assembly; new materials.

This article describes an account of some of our polyoxometalate (POM)-based research, we have been doing in our laboratory last several years. There are several well-defined POM cluster anions, that are structurally characterized. We have chosen Anderson-type of heteropolyanion [Al(OH)₆Mo₆O₁₈]$^{3−}$ and explored its linking propensity in different dimensions using `s', `d' and `f' block elements as linkers.We have demonstrated how a lanthanide linker provides a new pathway in forming a two-dimensional linked {As₈V₁₄} system [{Ln(H₂O)₆}₂As₈V₁₄O₄₂(SO₃)]$_n$.8nH₂O, that is derived from discrete {As₈V₁₄} cluster containing compound (NH₄)₆[As₈V₁₄O₄₂(SO₃)]. A polyoxometalate compound has been described in which a reduced tungstovanadate-heteropolyanion clusters get linked via capped V = O groups into one-dimensional chains. All these systems have already been reported elsewhere. The last portion of this article will be described by a new system [3-ampH]₆[V₁₀O₂₈]$\cdot$2H₂O having discrete molecular structure and extended supramolecular structure.

A Srinivasa Rao¹ T Arumuganathan¹ Vaddypally Shivaiah¹ Samar K Das¹

1. School of chemistry, University of Hyderabad, Hyderabad 500 046, India

Published

March 2011

• Supplementary Table 1.doc
• Supplementary Table 2.doc
• Supplementary Table 3.doc