The title complex crystd. in monoclinic space group P21/n, with a 21.13(1), b 14.47(1), c 13.25(1) Å, and 97.58(4)°; d. = 1.44 for Z = 4. The structure was refined to R = 0.056. At. parameters are given. The coordination about the Re atom is approx. octahedral. The formamidino ligand is coordinated to the metal atom in a bidentate mode with a N(1)-Re-N(2) angle of 60(1) and a N(1)-C(53)-N(2) angle of 112(1). The Re-N(1) and Re-N(2) bond lengths are 2.22(1) and 2.22(1) Å and the N(1)-C(49) and N(2)-C(49) distances are 1.32(1) and 1.34(1) Å, resp. The entire Re-formamidino system is essentially planar, allowing a delocalization of the electron d.
The crystal and molecular structure of trans-bis(triphenylphosphine)dicarbonyl(1,3-diphenylformamidino)rhenium(I)
TONIOLO, Luigi;
1982-01-01
Abstract
The title complex crystd. in monoclinic space group P21/n, with a 21.13(1), b 14.47(1), c 13.25(1) Å, and 97.58(4)°; d. = 1.44 for Z = 4. The structure was refined to R = 0.056. At. parameters are given. The coordination about the Re atom is approx. octahedral. The formamidino ligand is coordinated to the metal atom in a bidentate mode with a N(1)-Re-N(2) angle of 60(1) and a N(1)-C(53)-N(2) angle of 112(1). The Re-N(1) and Re-N(2) bond lengths are 2.22(1) and 2.22(1) Å and the N(1)-C(49) and N(2)-C(49) distances are 1.32(1) and 1.34(1) Å, resp. The entire Re-formamidino system is essentially planar, allowing a delocalization of the electron d.
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