Heteronuclear Triangular Clusters of the Type [Pt₂M(μ₃-η¹:η¹:η²-PhC⋮CC⋮CPh)(CO)₅(PPh₃)₂] (M = Fe or Ru)

Abstract

The 46-electron heteronuclear clusters [Pt2M(μ3-η1:η1:η2-PhC⋮CC⋮CPh)(CO)5(PPh3)2] (M = Fe or Ru) are formed in moderate yield by treating [Pt(η2-PhC⋮CC⋮CPh)(PPh3)2] with [Fe(CO)5] or [Ru3(CO)12] in refluxing toluene. The Pt2Fe and Pt2Ru clusters are isostructural, being composed of two Pt(CO)(PPh3) units and a M(CO)3 group linked by two Pt−Fe or Pt−Ru bonds with the μ3-diyne coordinated through only one C⋮C bond.

Synthesis, Structures, and Electronic Spectroscopy of Luminescent Acetylene‐ and (Buta‐1,3‐diyne)platinum Complexes

“…The molecular structure of complex 4 (Figure 2) is similar to that of {[(PPh 3 ) 2 Pt](PhC 4 Ph)} ( 3 ) reported by Deeming 6b. The lengths of the coordinated C≡C bond (C1–C2) and the uncoordinated one (C3–C4) are 1.299(6) and 1.201(6) Å.…”

“…The complexes 2 , 4 , and 5 were characterized by single‐crystal X‐ray diffraction analysis, while crystal structures of 1 12 and 3 6b have been previously reported by other research groups (Table 3). The selected bond lengths and angles are listed in Table 1.…”

“…(dppp)Pt[(1,2‐η 2 )‐CH 2 =CH 2 ] was prepared by reduction of Pt(dppp)Cl 2 in the presence of ethylene in ethanol. 1 5a and 3 6b were synthesized according to the reported methods. Their NMR spectra are identical to the reported ones.…”

Synthesis, characterization and crystal structures of two new platinum complexes with planar chiral 1,2-disubstituted ferrocenes containing phosphine and thioether donor groups

“…To the best of our knowledge, no other phosphinethioether Pt 0 complex has previously been described in the literature. We can compare the structural data of complex 5 with those of bis(phosphine) Pt 0 complexes containing diphenylacetylene, 6 28 ,9 29 ,10-12 30 and 1,4-diphenylbutadiyne, 7 31 , 8 32 (scheme 5). The principal structural data for these complexes are collected in Table 2.…”

Synthesis of Ru–Pt and Ru–Pd mixed-metal imido clusters from a diruthenium imido-methylene scaffold [(Cp*Ru)2(µ2-NPh)(µ2-CH2)]

“…[2][3][4][5] Soluble Ru-Pt mixed-metal clusters have consequently attracted much attention since they may provide insights into the behavior of heterogeneous Ru-Pt surfaces. [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] Additionally, Ru-Pt and Ru-Pd mixed-metal clusters have recently been shown to be precursors of supported bimetallic nanoparticles that exhibit high catalytic activity for certain hydrogenation reactions. 22,23 We have recently synthesized a novel diruthenium complex [(Cp*Ru) 2 (m 2 -NPh)(m 2 -CH 2 )] (1; Cp* = g 5 -C 5 Me 5 ) containing bridging imido and methylene ligands.…”