Pyrazine bis-adduct of dinuclear rhodium(II) carboxylate containing 3,4,5-tri(ethoxy) benzoate as equatorial ligand

F. D. CUKIERNIK; M. A. CASTRO; Z. CHAIA; O. PIRO; E. E. CASTELLANO; M. RUSJAN

ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS

International Union of Crystallography

Año: 2002 vol. 58 p. 393 - 395

0108-2701

The title compound, tetrakis(m-3,4,5-triethoxybenzoato)bis[(pyrazine- N)rhodium(II)](Rh-Rh), [Rh2(C13-H17O5)4(C4H4N2)2], crystallizes on an inversion centre in the triclinic space group P1. The equatorial carboxylate ligands bridge the two RhII atoms, giving a binuclear lantern-like structure. The pyrazine molecules occupy the two axialcoordination sites. The phenyl rings are tilted by ca 10º withrespect to the attached carboxylate groups. The pyrazine planes have a torsion angle of ca 19º around the Rh-N bond with respect to the plane of the nearer carboxylate group and are not coplanar with the Rh-Rh bond.