Tris(pyrazolyl)borate amidoborane complexes of the group 4 metals

Fuller, A-M, Hughes, D and Lancaster, SJ (2011) Tris(pyrazolyl)borate amidoborane complexes of the group 4 metals. Dalton Transactions, 40 (28). pp. 7434-7441. ISSN 1477-9226

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Abstract

Treatment of the tris(pyrazolyl)borate metal triamides Tp'M(NMe2)3, where Tp' = (C3H3N2)3BH (Tp) or (3,5-Me2C3HN2)3BH (Tp*) and M = Ti, Zr and Hf, with the Brønsted acidic Lewis adduct (C6F5)3B·NH3 in toluene solution leads to the formation of Tp'M(NMe2)2{NH2B(C6F5)3} complexes. The exception to this was the attempted preparation of Tp*Ti(NMe2)2{NH2B(C6F5)3} which was unsuccessful. Where Tp' = Tp and M = Ti and Zr and where Tp' = Tp* and M = Zr the complexes have been characterized by single crystal X-ray diffraction methods, revealing the first examples of octahedral amidoborane complexes of the group 4 metals. Attempts to drive the reactions to completion resulted in competing preferential hydrolysis of the amidoborane group, regenerating (C6F5)3B·NH3.

Item Type: Article
Faculty \ School: Faculty of Science > School of Chemistry
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Depositing User: Users 2731 not found.
Date Deposited: 15 Aug 2011 13:36
Last Modified: 21 Apr 2020 16:35
URI: https://ueaeprints.uea.ac.uk/id/eprint/34541
DOI: 10.1039/c1dt10709g

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