Metal complexes of functionalized sulfur containing ligands, XV . Reactions of platinum(0) complexes with 1,2,4-trithiolanes, 1,2,4,5-tetrathianes, 1,2,3,5,6-pentathiepanes as well as thioketones. X-ray structure analysis of (Ph3P)(2)Pt(eta(2)-Ph2C =

摘要

3,3,5,5 -Tetraphenyl-1,2,4-trithiolane (1) reacts with twofold excess of (Ph3P)(2)Pt(eta(2)-C2H4) (4) to give a 1:1 mixture of the complexes (Ph3P)(2)Pt(SCPh2S) (6a) and (Ph3P)(2)Pt(eta(2)-Ph2C=S) (7a). Treatment of 3,3,6,6-tetraphenyl-1,2,4,5-tetrathiane (2) with a fourfold excess of 4 yields [Pt-2(PPh3)(4)(mu-S)(2)] (8) and the platinum(0) compound 7a. The reaction of the 1,2,3,5,6-pentathiepane 3 with a fourfold excess of 4 affords a 1:1:1 mixture of 8, the platinum(0) complex 7b and the bis-thiolato platinum(II) complex 6b. The thioketone complexes 7a-c were formed in smooth reactions of 4 with the thioketones 5a-c. The molecular structure of (Ph3P)(2)Pt(eta(2)-Ph2C=S) (7a) has been established by single-crystal X-ray analysis. [References: 39]