Effects of Ru(ii/iii) redox on the Co(ii) coordination number and magnetic properties of 1D cyanide-bridged Co–Ru compounds†
Abstract
A new 1D cyanide-bridged Co–Ru compound, {[trans-RuIII(dmap)4(CN)2Co(dipic)(MeOH)](PF6)}n (1a) (dmap = 4-dimethylaminopyridine, dipic = pyridine-2,6-dicarboxylate), and its reduced state, [trans-RuII(dmap)4(CN)2Co(dipic)]n (1b) have been synthesized. Upon the Ru center reduction from III to II, the MeOH solvent molecule bound to Co(II) in 1a is expelled. 1a displays ferrimagnetic properties but 1b is only a paramagnetic compound.