34852-58-9Relevant academic research and scientific papers
Facile synthesis of platinum based heterobimetallic carbonyl clusters from bis(1-alkenyl)Pt(II) precursors
Sravani, Chinduluri,Venkatesh, Sadhana,Sivaramakrishna, Akella,Vijayakrishna, Kari,Clayton, Hadley S.,Moss, John R.,Moberg, Viktor,Su, Hong
, p. 169 - 178 (2013/10/22)
A new route for the high yield synthesis of platinum containing mixed bimetallic carbonyl clusters of the type [PtRu2(CO)8L 2] (where L2 = dppe, 1,2-bis(diphenylphosphino)ethane or dppp, 1,3-bis(diphenylphos-phino)propane; L=PPh3) by the reaction of platinum-alkenyl [PtL2(1-alkenyl)2] precursors with [Ru3(CO)12] is reported. An unexpected multinuclear mixed cluster, [PtRu4(CO)13(μ4-PCH 2CH2CH2PPh2)], obtained under prolonged refluxing conditions was also isolated. All the products were isolated and characterized by various spectroscopic and analytical techniques. In solution, the complex [PtRu2(CO)8(P Ph3)2] gives [Pt2Ru(-CO)3(CO)2(PPh3) 3] and Ru3(CO)11(PPh3). The structures and relative energies of the intermediates and transition states in the proposed reaction mechanism for the {PtRu2} clusters have been investigated using density functional theory.
Synthesis of "PtRu2" and "PtRu3" heterometallic complexes from the reaction of Ru3(CO)11(PPh2H) with zerovalent complexes of platinum. Single-crystal X-ray diffraction studies of PtRu2(μ-PPh2)(μ-H)(CO)7(PCy3) and PtRu3(μ-PPh ...
Powell, John,Brewer, John C.,Gulia, Giulia,Sawyer, Jeffery F.
, p. 4470 - 4476 (2008/10/08)
Full title: Synthesis of "PtRu2" and "PtRu3" heterometallic complexes from the reaction of Ru3(CO)11(PPh2H) with zerovalent complexes of platinum. Single-crystal X-ray diffraction studies of PtRu2(μ-PPh2)(μ-H)(CO)7(PCy3) and PtRu3(μ-PPh2)(μ-H)(CO)9(PCy3). The reaction of Ru3(CO)11(PPh2H) (4) with Pt(C2H4)(PPh3)2 gives PtRu2(μ-PPh2)(μ-H)(CO)7(PPh3) (6a) and Pt2Ru(CO)5(PPh3)3 (7) as the major products. The reaction of 4 with Pt(C2H4)2(PCy3) gives PtRu2(μ-PPh2)(μ-H)(CO)7(PCy3) (6b) and PtRu3(μ-PPh2)(μ-H)(CO)9(PCy3) (8) as the major products together with several minor "RuxPty" species. The molecular structures of 6b and 8 have been determined by single-crystal X-ray diffraction. Crystal data for 6b: C37H44O7P2PtRu2 crystallizes in space group P21/n with a = 13.075 (5) A?, b 20.576 (4) A?, c = 15.316 (7) A?, β = 102.38 (3)°, V = 4025 A?3, and Dx = 1.75 g cm-3 for Z = 4; R (Rw) = 0.0324 (0.0327) for 5932 observed data [I ≥ 3σ(I)]. Crystal data for 8: C45H56O9P2PtRu 3·CH2Cl2 crystallizes in space group P21/c with a = 9.605 (3) A?, b = 23.713 (12) A?, c = 20.600 (5) A?, β = 95.76 (2)°, V= 4668 A?3, and Dx = 1.77 g cm-3 for Z = 4; R (Rw) = 0.0605 (0.0645) for 3954 observed data [I ≥ 3σ(I)]. Complex 6b contains a PtRu2 triangle with one direct PtRu and one direct RuRu metal-metal bond. The hydride bridges a PtRu edge while the μ-PPh2 ligand bridges the RuRu edge such that the RuPRu plane is approximately orthogonal to the PtRu2 plane. The structure of 8 is formally derived from that of 6b by the addition of a "Ru(CO)2" moiety to 6b along a line bisecting the Ru-Ru bond and passing through Pμ, of the PPh2 group such that the resulting structure essentially consists of a square-planar (Cy3P)(OC)Pt(H)(Ru2) center linked by the μ-H and Pt-Ru2 metal-metal bonds to a Ru3(μ-CO)2(μ-PPh2)(CO)6 planar moiety. In 6b, the bridging hydrogen atom was located and refined such that Pt-Hμ, = 1.65 (4) A?, Ru1-Hμ, = 1.66 (4) A?, and PtHμRu1 = 121 (3)°.
Cluster Chemistry. V. Reactions Between t)> and and Related Chemistry: Crystal and Molecular Structures of Di-μ-carbonyl->-dicarbonyl(triphenylphosphine)ruthenium(2Ru-Pt)(Pt-Pt), ...
Bruce, Michael I.,Matisons, Janis G.,Skelton, Brian W.,White, Allan H.
, p. 687 - 708 (2007/10/02)
The reaction between t)> and (Pt(η-C2H4)(PPh3)2> at -30 deg C affords the thermally unstable intermediate complex (A), which decomposes at room temperature affording, inter alia, (1), (2), t)(PPh3)> (5) and t)(PPh3)> (6).The hexanuclear complexes t)(PPh3)4+n> are obtained, with t)(PPh3)4> (16), from reactions at 80 deg C.Related Ru2Pt and RuPt2 complexes are obtained from reactions between complex (A) and CO, CNBut, PMe3, P(C6H4Me-p)3, or P(OMe)3; related reactions between t)> and 4>, and between t)2> and , are also described.The crystal structure of has been determined by single-crystal X-ray diffraction methods at 295(1) K and refined by least squares to a residual of 0.035 for 6774 'observed' reflections.Crystals are triclinic, P1, a 15.893(5), b 15.400(5), c 12.651(4) Angstroem, α 57.04(2), β 77.09(3), γ 84.10(3) deg, Z 2.Crystals of the dibenzene solvate of complex are monoclinic, P21/c, a 11.868(4), b 18.647(8), c 29.24(1) Angstroem, β 98.35(3) deg, Z 4, the structure being refined to a residual of 0.057 for 4530 'observed' reflections.Ligand dispositions are compared in detail with those observed in the analogous compound previously described with the methyldiphenylphosphine ligand.
