Acta Crystallographica Section C

Crystal Structure Communications

Volume 62, Part 9 (September 2006)

metal-organic compounds

fg3029 scheme

Acta Cryst. (2006). C62, m451-m454 [ doi:10.1107/S0108270106030320 ]

Paddlewheel dirhodium complexes bridged by para-substituted benzoates

M. Ebihara, K. Yamada and T. Kawamura

Abstract: The dirhodium complex bis(benzonitrile)tetrakis[ [mu] -4-(diethylamino)benzoato- [kappa] ²O:O']dirhodium(II)(Rh-Rh) benzonitrile disolvate, [Rh₂(C₁₁H₁₄NO₂)₄(C₇H₅N)₂]·2C₇H₅N, lies about an inversion centre. The dirhodium complex (methanol)tetrakis( [mu] -4-nitrobenzoato- [kappa] ²O:O')(pyridine)dirhodium(II)(Rh-Rh) dichloromethane solvate, [Rh₂(C₇H₄NO₄)₄(C₅H₅N)(CH₄O)]·CH₂Cl₂, lies in a general position in the unit cell, but the complexes dimerize around an inversion centre via O-HO hydrogen bonding of the axial MeOH to a carboxylate O atom. In the latter crystal structure, [pi] - [pi] stacking interactions between the bridging 4-nitrobenzoate ligands and the axial pyridine ligand are observed between adjacent molecules.

Formula: [Rh₂(C₁₁H₁₄NO₂)₄(C₇H₅N)₂] and [Rh₂(C₇H₄NO₄)₄(C₅H₅N)(CH₄O)]


	Structure factor file (CIF format) (374.7 kbytes) [ doi:10.1107/S0108270106030320/fg3029Isup2.hkl ] Contains datablock I

	Structure factor file (CIF format) (436.8 kbytes) [ doi:10.1107/S0108270106030320/fg3029IIsup3.hkl ] Contains datablock II

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