Etude cristallochimique de derives du chrome(0) : I. Structure cristalline et moleculaire du benzoate de methyle chrome dicarbonyle thiocarbonyle |
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Authors: | Jean-Yves Saillard Guy Le Borgne Daniel Grandjean |
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Affiliation: | Laboratoire de Cristallochimie, Equipe associée au C.N.R.S., U.E.R. Structure et propriétés de la matière, Université de Rennes, 35031 Rennes Cédex France |
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Abstract: | The crystal and molecular structure of methylbenzoatechromium dicarbonyl thiocarbonyl has been determined by a single-crystal X-ray study. The compound crystallizes with two molecules in a unit cell of symmetry P, with the following parameters: triclinic system, a = 7.108(3), b = 10.340(4), c = 8.523(3) Å; α = 89.75(6), β = 95.89(4), γ = 105.50(4)°; V = 601 Å3; dm = 1.57 ± 0.05, dc = 1.56. The structure has been refined to R and R″ values of 0.030 and 0.038 respectively, for 1963 independent reflections. The main feature of the molecule is the Cs symmetry of the Cr(CO)2CS group with a CrC(S) bond length of 1.792(2) Å, shorter than the CrC(O) bond length, mean: 1.849(3) Å. |
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