Issue 1, 2009

Formation and hydrogen bonding of a novel POSS-trisilanol

Abstract

The formation of t-butyl substituted polyhedral silsesquioxanes (POSS) starting from the corresponding silanetriol is reported. Several intermediates involved in this complex condensation process could be identified spectroscopically. In addition, the initial condensation intermediate t-Bu2Si2O(OH)4, as well as t-Bu6Si6O9 and t-Bu7Si7O9(OH)3, could be characterized by X-ray crystallography. Owing to the high crystal quality it was possible to experimentally determine the geometric parameters of the unusual cyclic hydrogen bond network in a dimeric POSS trisilanol for the first time. Furthermore, we investigated the structural changes concomitant with dimer formation/dissociation of the t-butyl substituted POSS trisilanol and its methyl analogue.

Graphical abstract: Formation and hydrogen bonding of a novel POSS-trisilanol

Supplementary files

Article information

Article type
Paper
Submitted
28 Jul 2008
Accepted
29 Aug 2008
First published
23 Oct 2008

Dalton Trans., 2009, 163-167

Formation and hydrogen bonding of a novel POSS-trisilanol

S. Spirk, M. Nieger, F. Belaj and R. Pietschnig, Dalton Trans., 2009, 163 DOI: 10.1039/B812974F

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