No 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.

Abstract. The reactions of 2-iminopyrroles 1-3 with Fe(PMe 3 ) 4 afforded the N-H activated bis(2-iminopyrrolyl) iron(II) complexes 4-6. The structures of compounds 4-6 were determined by single-