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Metallaborane Chemistry. 14. Icosahedral 6-arene carbametallaboranes of iron and ruthenium

Garcia, Maria P. and Green, Michael and Stone, F. Gordon A. and Somerville, Richard G. and Welch, Alan J. and Briant, Clive E. and Cox, David and Mingos, D. Michael P. (1985) Metallaborane Chemistry. 14. Icosahedral 6-arene carbametallaboranes of iron and ruthenium. Dalton Transactions, 1985 (11). pp. 2343-2348. ISSN 1477-9226

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Abstract

Icosahedral 2,4-dicarba-1-ferraboranes with η6-bonded benzene, toluene, o-xylene, or naphthalene ligands have been synthesised in moderate yields by reaction of [Fe(cod)(η5-C5H5)](cod = cyclo-octa-1,5-diene) with 2,3-Me2-2,3-C2B9H9 in the presence of the appropriate arene. In addition, the toluene derivative, closo-[1-(η6-C6H5Me)-2,4-Me2-1,2,4-FeC2B9H9](2), has also been obtained by treatment of the carbaborane with [Fe2(µ-η-C6Me6)(η5-C5H5)2] in toluene. Reaction of [RuCl2(η6-C6H6)2] with Tl[TlC2B9H11] affords closo-[3-(η6-C6H6)-3,1,2-RuC2B9H11](7). Complexes (2) and (7) have been characterised by single-crystal X-ray diffraction. Crystals of (2) are orthorhombic, space group Pna21, with a= 21.793(4), b= 8.6274(15), c= 8.636(3)Å, and Z= 4; R= 0.0499 for 1 676 reflections. Complex (7) is also orthorhombic, space group Pnam, with a= 18.477(2), b= 9.191(4), and c= 7.704(1)Å, and Z= 4; R= 0.0223 for 1 723 data. Both species have slightly distorted Icosahedral cage geometries and overall Cs molecular symmetry, space group imposed for (7). The naphthalene derivative [1-(η6-C10H8)-2,4-Me2-1,2,4-FeC2B9H9] undergoes substitution of the arene ligand by CO at 100 bar and 50 °C, to afford the complex [1,1,1-(CO)3-2,4-Me2-1,2,4 FeC2B9H9].

Item Type: Article
Journal or Publication Title: Dalton Transactions
Subjects:
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 64966
Deposited By: ep_importer_pure
Deposited On: 10 Jun 2013 10:11
Refereed?: Yes
Published?: Published
Last Modified: 10 Oct 2017 18:06
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/64966

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