Abstract
The synthesis and reaction chemistry of heterobimetallic FcPPh2AuCl (1) and FcPPh2Au-C≡CR compounds (3a, R = bipy; 3b, R = C6H4-4-C≡N; 3c, R = C5H4N-4; 3d, R = NCN-H; 3e, R = NCN-I; Fc = (η5-C5H5)(η5-C5H4)Fe; bipy = 2,2′-bipyridyl-5-yl; NCN = [C6H2(CH2NMe2)2-2,6]−) toward diverse organometallic molecules is described. In context with this background, 1 was prepared by reacting FcPPh2 with (tht)AuCl (tht = tetrahydrothiophene). The reaction of 1 either with HC≡CR (2a, R = bipy; 2b, R = C6H4-4-C≡N; 2c, R = C5H4N-4) or with the lithium acetylides LiC≡CR (2d, R = NCN-H; 2e, R = NCN-I) gave complexes 3a−3e in good yield. In 1 the gold(I) chloride entity was further reacted with the organometallic alkyne HC≡CMLn (4a, MLn = (η6-C6H5)Cr(CO)3; 4b, MLn = Fc; 4c, MLn = Rc; Rc = (η5-C5H5)(η5-C5H4)Ru) to afford the heterotrimetallic complexes FcPPh2Au-C≡CMLn (5a, MLn = (η6-C6H5)Cr(CO)3; 5b, MLn = Fc; 5c, MLn = Rc) in which three different transition metal atoms are connected via rigid-rod structured carbon-rich units....
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