Reactions of 1,2,4-Trithiolane and Its 4-S-Oxide with Diphosphane Pt0 Complexes

✍ Scribed by Holm Petzold; Thomas Weisheit; Silvio Bräutigam; Helmar Görls; Grzegorz Mloston; Wolfgang Weigand

• Publisher: John Wiley and Sons
• Year: 2010
• Tongue: English
• Weight: 301 KB
• Volume: 2010
• Category: Article
• ISSN: 1434-1948
• DOI: 10.1002/ejic.200901229

✦ Synopsis

Abstract

Reactions of 1,2,4‐trithiolanes with Pt^0^ complexes often proceed via an oxidative addition of the Pt^0^ complex fragment into the S–S bond and subsequent extrusion of a thioketone molecule by ring contraction. The six‐membered intermediate 5a, formed in the course of the reaction of the parent 1,2,4‐trithiolane (1a) and Pt^0^ complex 4, was detected bymeans of low‐temperature NMR spectroscopy. Stable derivatives of this type (compounds 9, 11 and 12) were isolated either by using (dppe)Pt^0^ complex 8 or 1,2,4‐trithiolane 4‐S‐oxide (10). The molecular structures of platinum complexes 9, 11 and 12, as well as their unexpected stability, are discussed.