المؤلفون: Bao Li¹, Feng-Lei Yang¹, Jun Tao¹, Osamu Sato², Rong-Bin Huang¹, Lan-Sun Zheng¹

المصدر: Chemical Communications. Nov2008, Vol. 2008 Issue 45, p6019-6021. 3p.

مصطلحات موضوعية: *COBALT compounds, *METAL complexes, *TAUTOMERISM, *VALENCE fluctuations, *MAGNETIC susceptibility, *PRESSURE

مستخلص: The effects of pressure on valence trautomeric transition behavior of two complexes, [{Co(tpa)}2(dhbq)]·(PF6)3(I·(PF6)3) and [{Co(dpqa)}2(dhbq)]·(PF6)3(II·(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. [ABSTRACT FROM AUTHOR]

المؤلفون: Bao Li¹, Jun Tao¹, Hao-Ling Sun², Osamu Sato², Rong-Bin Huang¹, Lan-Sun Zheng¹

المصدر: Chemical Communications. May2008, Vol. 2008 Issue 19, p2269-2271. 3p.

مصطلحات موضوعية: *LIGANDS (Chemistry), *CHARGE exchange, *TAUTOMERISM, *COMPLEX compounds synthesis, *INFRARED spectra, *COBALT compounds, *METAL complexes, *X-ray diffraction

مستخلص: A cobalt complex [{Co(dpqa)}2(dhbq)](PF6)3(1(PF6)3, dhbq = deprotonated 2,5-dihydroxy-1,4-benzoquinone, dpqa = di(2-pyridylmethyl)-N-(quinolin-2-ylmethyl)amine) was prepared and studied by X-ray diffraction, electrochemistry, ESR, thermally and photo-induced magnetic measurements; the results show that the ancillary ligand finely tuned structural factors as well as intermolecular interactions that affect the VT behavior. [ABSTRACT FROM AUTHOR]