Probing the Lewis basicity of the metalloligand [Pt2(μ-Se)2(PPh3)4] on tin substrates by electrospray mass spectrometry

Extending The Reaction Landscape of the {Pt(μ‐S)2Pt} Core: From Metal Centers to Non‐Metallic Electrophiles

“…[73] The reaction pathways by which compounds [L 2 Pt(µ-S) 2 PtL 2 ] (L 2 ϭ dppe, dppp) react with protic acids were Scheme 13. Reaction pathway corresponding to the evolution of [L 2 Pt(µ-S) 2 The previous results show that the evolution of complexes [L 2 Pt(µ-S) 2 PtL 2 ] (L 2 ϭ dppe or dppp) in the presence of protic acids depends on several factors: (i) the concentration and nature of the protic acid, i.e.…”

Mixed-chalcogenide diplatinum complexes; an investigation of ligand exchange processes using ESI mass spectrometry

“…The complexes [Pt2(µ-S)2(PPh3)4] 1 [40] and [Pt2(µ-Se)2(PPh3)4] 2 [6] were prepared by the literature procedures. The following compounds were used as supplied from commercial sources: diphenyl diselenide (Aldrich), diphenyl ditelluride (Aldrich), grey powdered selenium (BDH).…”

“…[2,3] Closely-related analogues, with alternative phosphine ligands in place of PPh3, are also well-known. [4,5] The related selenide complex [Pt2(µ-Se)2(PPh3)4] 2 has been less-intensively studied, [6] but has distinctive reactivity differences compared to its sulfide counterpart. [7,8,9] The chemistry of these complexes, which has been reviewed on a number of occasions, [10,11,12,13] is dominated by their alkylation and arylation reactions with suitable electrophiles, and their reactivity as metalloligands, forming sulfide-bridged multi-metallic complexes.…”

Trigonal Bipyramidal Metalselenide Clusters with Palladium and Tin Atoms in Various Positions

“…[21] However, trigonal bipyramidal metal chalcogenide clusters, in which transition metal atoms are combined with tin atoms, are very rare. The only examples known to date are clusters of the general type [(ML z ) 2 [22] [Ru 3 (CO) 7 [23] Owing to the unsymmetrical coordination sphere at the Pd atoms, the Se-Pd distances vary much more distinctly than those in 1 and 2. Further, the replacement of one Pd atom by an [SnR 2 Cl 2 ] unit naturally causes a distortion of the bipyramid, which is reflected by more obtuse Se-Pd-Se angles of 80.58 (9) 2].…”