The effects of pressure on valence tautomeric transitions of dinuclear cobalt complexes.

The effects of pressure on valence trautomeric transition behavior of two complexes, [{Co(tpa)}2(dhbq)].(PF6)3 (.(PF6)3) and [{Co(dpqa)}2(dhbq)](PF6)3 (II x (PF6)3) (tpa = tris(2-pyridylmethyl)amine, dpqa = di(2-pyridylmethyl)-N-(quinolin-2-ylmethyl)amine and dhbq = deprotonated 2,5-dihydroxy-1,4-benzoquinone), in the light of changes of magnetic susceptibilities were investigated; the results show that external pressure makes the SC + ET transition process of the two complexes into a general SC process only.