Crystal structure of Bis(2,2':6',2''-terpyridyl)cobalt(III) chloride

The crystal structure of the title compound [CO(C15H11N3)2]Cl3 has been determined by single crystal X-ray diffraction methods at 295 K and refined by least-squares methods to a residual of 0.069 for 2953 'observed' reflections. Crystals are triclinic, PI, a 9.018(4), b 11.751(4), c 18.085(6)Å, a 9O.82(6), ß 9O.66(7), ? 90.79(7)º, Z 2. The determination establishes for the first time metal-nitrogen distances in the bis(terpyridyl)cobalt(III) species; (Co-N)(central, distal) are 1.86, 1.93 Å. The precision of the determination is adversely affected by widespread solvent/anion disorder.