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Polyhedral monocarbaborane chemistry: Reactions of the [6-Ph-nido-6-CB 9H11]- anion with two-electron donors to yield a series of neutral arachno and closo ten-vertex monocarbaborane derivatives

Lookup NU author(s): Emeritus Professor Bill Clegg

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Abstract

Reaction of the ten-vertex [6-Ph-nido-6-CB9H11] - anion (1) with two-electron donor ligands L, where L is SMe 2, NH2Ph, NC5H5, NC 5H4-para-CH2Ph, NC5H 4-para-Ph or NC9H7 (where NC9H 7 is quinoline) in the presence of {FeCl3(OH 2)6} gives the six neutral arachno ten-vertex monocarbaboranes [6-Ph-9-L-arachno-6-CB9H12], compounds 2, 3, 4, 7, 9 and 11, respectively, isolatable in yields of up to 63%. On prolonged treatment with {FeCl3(OH2)6} oxidative cluster closure of the four compounds 4, 7, 9 and 11 that have pyridine-type ligands gives the neutral closo ten-vertex monocarbaboranes [1-Ph-6-L-closo-1-CB9H8], compounds 6, 8, 10 and 12, respectively, in yields of 49-92%. All new species 2, 3, 4, 6, 7, 8, 9, 10, 11 and 12 are characterised by single-crystal X-ray diffraction analysis and NMR spectroscopy. [This paper is an annotated exposition of parts of an oral presentation at the Third Pan-European Meeting of Boron Chemists, EUROBORON-3, Pruhonice, The Czech Republic, September 2004, of which the proceedings constitute this volume of Journal of Organometallic Chemistry.] © 2005 Elsevier B.V. All rights reserved.


Publication metadata

Author(s): Bullen NJ, Franken A, Kilner CA, Teat SJ, Clegg W, Kennedy JD

Editor(s): Stibr B ;Bertrand G

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: Journal of Organometallic Chemistry

Year of Conference: 2005

Pages: 2815-2828

ISSN: 0022-328X

Publisher: Elsevier

URL: http://dx.doi.org/10.1016/j.jorganchem.2005.02.038

DOI: 10.1016/j.jorganchem.2005.02.038

Notes: EUROBORON Conference 12-16 September 2004

Library holdings: Search Newcastle University Library for this item

ISBN: 18728561


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