Please use this identifier to cite or link to this item:
|Title:||Tris(organotin)tungstogermanate, a Sandwich Organometallic Derivative of a Keggin-Type Polyoxometalate: Synthesis and DFT Study|
Bandeira, Nuno A. G.
Calhorda, Maria Jose
|Keywords:||MULTIPLE ORGANIC GROUPS|
|Publisher:||WILEY-V C H VERLAG GMBH|
|Abstract:||A phenyltin-containing Keggin-based polyoxometalate has been synthesised and characterised by elemental analysis, infrared and electronic spectroscopy, and multinuclear NMR spectroscopy. Structural data, complemented by DFT calculations, suggests that three phenyltin groups connect two [-GeW9O34]10 moieties to form the [(C6H5SnOH)3(-GeW9O34)2]14 anion. Each tin atom displays a distorted-octahedral environment, composed of two sets of equatorial oxygen atoms from two edge-sharing WO6 octahedra of each [-GeW9O34]10 group, and one phenyl and one OH group in the axial positions. The DFT studies lend support to the experimental proposal of the molecular structure of this polyoxometalate. The similar energy of the limiting arrangements of phenyl groups demonstrates how their fluxionality occurs as a dynamical process in solution and explains the disorder in the solid.|
|Appears in Collections:||CICECO - Artigos|
Files in This Item:
|Tris(organotin)tungstogermanate a Sandwich Organometallic Derivative of a Keggin-Type Polyoxometalate Synthesis and DFT Study_10.1002ejic.201201385.pdf||530.08 kB||Adobe PDF|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.