Oxidative addition of bis-(dimethoxybenzo)-1,2,5,6-tetrathiocins to Pt(PPh3)4: Synthesis and structures of mono- and di-metallic platinum dithiolate complexes, (dmobdt)Pt(PPh3)2 and [(dmobdt)Pt(PPh3)]2
The oxidative addition reaction of bis(4',5'-di-methoxybenzo-)-1,2,5,6-tetrathiocin (1) to zero-valent Pt (PPh3)(4) under microwave irradiation for 30 min afforded a mixture of the title Pt(II) complexes, (dmobdt)Pt(PPh3)(2) (2) and [(dmobdt)Pt(PPh3)](2) (3) [dmobdt(2-) = 4,5-dimethoxybenzene-1,2-dithiolate]. Under extended reaction times the dimetallic complex 3 was isolated as the exclusive Pt-containing product indicating 2 is an intermediate en route to 3. The structures of 1-3 have been determined by X-ray diffraction. (C) 2015 Elsevier Ltd. All rights reserved.