Metallaborane Chemistry. Part 12. Electron Hyper-deficient Carbametallaboranes containing Iron-Iron, Iron-Cobalt and Iron-Platinum Connectivities: Molecular and Crystal Structure of [CoFe(Me4C4B8H8)(PEt3)2]

Geoffrey K. Barker, Maria P. Garcia, Michael Green, F. Gordon A. Stone, Alan J. Welch

Research output: Contribution to journalArticle

Abstract

The dihydridocarbaferraborane [FeH2(2,3-Me2-2,3-C2B4H 4)2] reacts with [Co(PEt3)4], [Pt2(μ-cod)(PEt3)4] (cod = cyclo-octa-1,5-diene), and [Fe(cod)(η-C5H5)] to afford, respectively, the dimetallic species [CoFe( Me4C4B8H8)(PEt3) 2], [FePt(Me4C4B8H8) (PEt3)2], and [Fe2(Me4C4B8H8) (η-C5H5)], each of which features a metal-metal connectivity. An X-ray diffraction study of the iron-cobalt molecule shows that it belongs to the structural family involving two pentagonal bipyramids fused about a common iron apical vertex and sharing a double-capping BH function. Crystals are orthorhombic, space group P212121 with a = 16.533(5), b = 11.012(2), c = 16.279(3) Å, and four molecules per unit cell. Using 3 496 amplitudes recorded on a four-circle diffractometer at 291 ± 1 K the structure has been refined to R 0.043. The Co-Fe distance is 2.5300(8) Å; 0.05 Å longer than that in [CoFe(Me4C4B8H8) (η-C5H5)].

Original languageEnglish
Pages (from-to)1679-1686
Number of pages8
JournalJournal of the Chemical Society, Dalton Transactions
Issue number9
DOIs
Publication statusPublished - 1982

ASJC Scopus subject areas

  • Chemistry(all)

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