Nn. Sveshnikov et al., Bis(dimethyl sulfoxide-S)tetrakis(mu-p-hydroxybenzoato-O : O ' O)dirhodium(II)-tetrakis(mu-butyrato-O : O ')bis(dimethyl sulfoxide-S)dirhodium(II) cocrystal ethanol disolvate, ACT CRYST C, 56, 2000, pp. 1193-1195
The title structure, [Rh-2(C7H5O3)(4)(C2H6OS)(2)]. [Rh-2(C4H7O2)(4)(C2H6OS)
(2)]. 2C(2)H(6)O, contains two discrete neutral Rh- Rh dimers cocrystallize
d as the ethanol disolvate. Each dimer is situated on an inversion center.
The butyrate chain displays disorder in one C-atom position. In each dimer,
the dimethyl sulfoxide ligand (dmso) is bound via S, as expected. The etha
nol is a hydrogen-bond acceptor for one p-hydroxybenzoate hydroxyl group an
d acts as a hydrogen-bond donor to the dmso O atom of a neighboring p-hydro
xybenzoate dirhodium complex. A third hydrogen bond is formed from the othe
r p-hydroxybenzoate hydroxyl group to the dmso O atom of a butyrate-dirhodi
um complex.