Acta Crystallographica Section C

Crystal Structure Communications

Volume 60, Part 7 (July 2004)

metal-organic compounds

 

Bis[tris(1-methyl-1H-imidazol-2-yl)phosphine-³N³]iron(II) tetrachloroferrate(II) methanol tetrasolvate (ca 153 K) and bis[tris(1-methyl-1H-imidazol-2-yl)methanol-³N³]iron(III) bis[tetrachloroferrate(III)] chloride (redetermination, ca 153 K)

M. P. Batten, A. J. Canty, K. J. Cavell, T. Rüther, B. W. Skelton and A. H. White

Abstract: The first of the title compounds, [Fe(C₁₂H₁₅N₆P)₂][FeCl₄]·4CH₄O, is the first homoleptic bis(ligand)iron(II) species reported for this phosphorus bridgehead ligand; interestingly, the complex is isomorphous with its tris(1-methyl-1H-imidazol-2-yl)methanol counterpart, the second of the title compounds, [Fe(C₁₃H₁₆N₆O)₂][FeCl₄]₂Cl. In both compounds, the Fe atom of the cation lies on an inversion centre. The structure determinations presented here allow an interesting comparison of iron(II) and iron(III) species in similar coordination environments.

Formula: [Fe(C₁₂H₁₅N₆P)₂][FeCl₄]·4CH₄O and [Fe(C₁₃H₁₆N₆O)₂][FeCl₄]₂Cl

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