Phenylthiyl Radical Complexes of Gallium(III), Iron(III), and Cobalt(III) and Comparison with Their Phenoxyl Analogues
作者:Shuji Kimura、Eckhard Bill、Eberhard Bothe、Thomas Weyhermüller、Karl Wieghardt
DOI:10.1021/ja004305p
日期:2001.6.1
[M(III)L(2)] complexes in CH(3)CN solution undergo an irreversible one-electron oxidation where the putative thiyl radical monocationic intermediates dimerize with S-S bond formation yielding dinuclear disulfide species [M(III)L(2)-L(2)M(III)](2+). [GaL(3)] behaves similarly despite the steric bulk of two tertiary butyl groups at the 3,5-positions of the thiophenolate, but [Co(III)L(3)] in CH(2)Cl(2)
已经合成了三个包含 1,4,7-triazacyclononane-1,4-diacetate 主链和第三个 N-绑定酚盐或苯硫酚盐臂的六齿、不对称悬臂大环。在 [L(1)](3)(-) 中,第三个臂是 3,5-二叔丁基-2-羟基苄基,在 [L(2)](3)(-) 中它是 2-巯基苄基, [L(3)](3)(-)中是3,5-二叔丁基-2-巯基苄基。这些配体与三价金属离子形成非常稳定的中性单核配合物 [M(III)L(1)] (M = Ga, Fe, Co), [M(III)L(2)] (M = Ga, Fe, Co ) 和 [M(III)L(3)] (M = Ga, Co),其中镓和钴配合物的 S = 0,铁配合物的 S = (5)/(2) 基态。配合物 [CoL(1)].CH(3)OH.1.5H(2)O、[CoL(3)].1.17H(2)O、[FeL(1)].H(2)O 和 [ FeL(2)]