Surprising nucleophilic reactions of the metalloligand [Pt 2 (PPh 3) 4 (-S) 2 ] with metavanadate and molybdate ions, and uranyl nitrate, monitored using electrospray ionisation mass spectrometry (ESMS), reveals new and facile synthetic routes to the 'earlylate' heterobimetallic complexes [Pt 2 (PPh 3) 4 ( 3-S) 2 VO(OMe) 2 ] + , [Pt 2 (PPh 3) 4 ( 3-S) 2 MoO 2 (OMe)] + , and [Pt 2 (PPh 3) 4 ( 3-S) 2 UO 2 ( 2-NO 3) 2 ], the first example of a sulfidebridged platinum-uranium complex.

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