trans-Bis(2,2′-bi-pyridine-4,4′-di-carb-oxy-lic acid-κ2N,N′)di-chlorido-ruthenium(III) perchlorate

摘要

In the crystal structure of the ruthenium(III) complex, trans -[Ru III (dcbpy) 2 Cl 2 ]ClO 4 (dcbpy = 2,2′-bi-pyridine-4,4′-di-carb-oxy-lic acid, C 12 H 8 N 2 O 4 ), the Ru III atom lies on an inversion centre, showing a small distortion in its octa-hedral environment. The Ru—Cl bond lengths are shorter than those present in the analogous trans -ruthenium(II) compound containing the bi-pyridine ligand. The C—O distances in the two symmetry-independent carb-oxy-lic acid moieties of the ligand are similar in one group, but different in the other. This is probably due to the different inter-molecular inter-actions they experience with neighbouring cationic complexes. The hydrogen-bonding inter-actions in which they are involved form a three-dimensional structure, similar to those found in coordination polymers.