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)]center dot(PF6)(3) (I center dot(PF6)(3)) and [{Co(dpqa)}(2)(dhbq)]center dot(PF6)(3) (II center dot(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.