Abstract
Benzene-1,2-dithiol reacted with Co(PMe3)4 or Co(PMe3)4Me to afford a dinuclear complex Co2[C6H4(SS)]2(PMe3)4 (1). The cobalt complex Co2[C6H4(NH)S]2(PMe3)4 (2) was obtained from the reaction of 2-aminothiolphenol with Co(PMe3)4Me. From Co(PMe3)3(CO)Cl and the lithium salt of 2-aminothiolphenol or benzene-1,2-dithiol dinuclear complexes Co2[C6H4(NH)S](CO)2(PMe3)4 (3) or Co2[C6H4(SS)](CO)2(PMe3)4 (4) were obtained. The molecular structures of 1 and 4 show longer metal–metal distances [Co–Co: 2.6333(6) (1) and 2.5547(12) Å (4)] than those of 2 and 3 [Co–Co: 2.4720(5) (2) and 2.457(4) Å (3)]. The possible reaction mechanisms of these reactions are proposed.
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