Dimerisation of a diplatinum to a tetraplatinum complex during catalysis of the water gas shift reaction: the X-ray crystal structure of [Pt₄(µ₂-CO)₂(µ₂-Ph₂PCH₂PPh₂)₃{Ph₂PCH₂P(:O)Ph₂}]

Structural Variations and Spectroscopic Properties of Luminescent Mono- and Multinuclear Silver(I) and Copper(I) Complexes Bearing Phosphine and Cyanide Ligands

“…In the literature, reactions of transition metal halides with bidentate phosphine ligands (P ∩ P), such as dppm or dcpm, in 1:1 stoichiometry were reported to afford compounds with the [M 2 ( μ -P ∩ P) 2 ] n + framework (M = Re, Mo, Cu, Ag, Au, Pt, Mn) . In this work, reacting AgCN with dcpm in stoichiometric ratio of 1:1 and 2:1 gave 3a and 3b , respectively (Scheme ), and both structures comprise the same [Ag 2 ( μ -dcpm) 2 ] 2+ core with minor structural deviations (see Scheme ).…”

Structural and Functional Evolution of Metallacrowns

“…Groups forming metal−metal bonds with all three ring Pt centers (a μ 3 -guest) include Sn(CH 3 ) 2 O 2 PF 2 - , SnF 3 - , , AuP(CH 3 ) 3 + , Re(CO) 3 + , − Re(CO) 3 P(OC 6 H 5 ) 3 - , AuP(C 6 H 5 ) 3 + , Hg, Hg−Ru(η 5 -C 5 H 5 )(CO) 2 , Tl(CH 3 COCH 2 COCH 3 )(OH 2 ), and Tl(CH 3 COCH 2 COCH 3 )(O 2 CCF 3 ) - . Many of these complexes also bind a second μ 3 -guest such as a second metal group, CO, or a halide anion on the opposite face. − ,,,− In addition, Re(CO) 3 + groups have been attached to the Pt 3 core via three one-atom bridges between the Re and two ring Pt centers provided by two μ 3 -O and one μ 3 -S. , Re(CO) 3 + groups have also been attached to 12-MC Pt -3 complexes via two or three Re−Pt bonds and two μ 3 -one atom bridges provided by μ 3 -O, μ 3 -S, or μ-CO groups (Figure ). ,− Furthermore, Pt(dppm) or Pt{C 6 H 5 PCH 2 P(O)C 6 H 5 } groups have been attached to the Pt 3 core through two Pt central −Pt ring metal bonds and two μ-CO groups that bridge the Pt central guest to the Pt ring centers. − The dppm and C 6 H 5 PCH 2 P(O)C 6 H 5 ligand bound to the central Pt does not bridge to the Pt 3 12-MC-3. An Ir(dppm) group and an Ir(P(OC 6 H 5 ) 3 ) group have been attached in a similar manner to a 12-MC Pt -3.…”

Palladium(II) and Platinum(II) Complexes of the Heterodifunctional Ligand Ph2PNHP(O)Ph2

“…To further develop our understanding of these ligand systems, we sought to prepare the ligand Ph 2 PNHP(O)Ph 2 (hereafter abbreviated HL ) containing both a “soft” and a “hard” donor atom. Some studies with the isoelectronic ligands Ph 2 PCH 2 P(O)Ph 2 − and Ph 2 PCH 2 P(S)Ph 2 , have also been reported. We envisage five different possible modes of coordination of metal ions toward either neutral HL or anionic L - as shown in Chart .…”