Addition of Pt(PBut3) groups to Ru 5(CO)12(η6-C6H 6)(μ5-C). Synthesis, structures, and dynamical activity

Richard D. Adams; Burjor Captain; Perry J. Pellechia; Lei Zhu

doi:10.1021/ic049004l

Addition of Pt(PBu^t₃) groups to Ru ₅(CO)₁₂(η⁶-C₆H ₆)(μ₅-C). Synthesis, structures, and dynamical activity

Richard D. Adams, Burjor Captain, Perry J. Pellechia, Lei Zhu

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

Abstract

The reaction of Ru₅(CO)₁₂(η⁶-C ₆H₆)(μ₅-C), 7, with Pt(PBu^t ₃)₂ yielded two products Ru₅(CO) ₁₂(η⁶-C₆H₆)(μ₆-C) [Pt(PBu^t₃)], 8, and Ru₅(CO)₁₂(η ⁶-C₆H₆)(μ₆-C)[Pt(PBu ^t₃)]₂, 9. Compound 8 contains a Ru ₅Pt metal core in an open octahedral structure. In solution, 8 exists as a mixture of two isomers that interconvert rapidly on the NMR time scale at 20 °C, ΔH‡ = 7.1(1) kcal mol^-1, ΔS‡ = -5.1(6) cal mol^-1 K^-1, and ΔG₂₉₈‡ = 8.6(3) kcal mol^-1. Compound 9 is structurally similar to 8, but has an additional Pt(PBu^t₃) group bridging an Ru-Ru edge of the cluster. The two Pt(PBu^t₃) groups in 9 rapidly exchange on the NMR time scale at 70 °C, ΔH‡ = 9.2(3) kcal mol^-1, ΔS‡ = -5(1) cal mol^-1 K^-1, and ΔG₂₉₈‡ = 10.7(7) kcal mol^-1. Compound 8 reacts with hydrogen to give the dihydrido complex Ru₅(CO) ₁₁(η⁶-C₆H₆)(μ₆-C) [Pt(PBu^t₃)](μ-H)₂, 10, in 59% yield. This compound consists of a closed Ru₅Pt octahedron with two hydride ligands bridging two of the four Pt-Ru bonds.

Original language	English (US)
Pages (from-to)	7243-7249
Number of pages	7
Journal	Inorganic Chemistry
Volume	43
Issue number	22
DOIs	https://doi.org/10.1021/ic049004l
State	Published - Nov 1 2004
Externally published	Yes

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry

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@article{99a726b7cad942b184edd9cfe5a89e2f,

title = "Addition of Pt(PBut3) groups to Ru 5(CO)12(η6-C6H 6)(μ5-C). Synthesis, structures, and dynamical activity",

abstract = "The reaction of Ru5(CO)12(η6-C 6H6)(μ5-C), 7, with Pt(PBut 3)2 yielded two products Ru5(CO) 12(η6-C6H6)(μ6-C) [Pt(PBut3)], 8, and Ru5(CO)12(η 6-C6H6)(μ6-C)[Pt(PBu t3)]2, 9. Compound 8 contains a Ru 5Pt metal core in an open octahedral structure. In solution, 8 exists as a mixture of two isomers that interconvert rapidly on the NMR time scale at 20 °C, ΔH‡ = 7.1(1) kcal mol-1, ΔS‡ = -5.1(6) cal mol-1 K-1, and ΔG298‡ = 8.6(3) kcal mol-1. Compound 9 is structurally similar to 8, but has an additional Pt(PBut3) group bridging an Ru-Ru edge of the cluster. The two Pt(PBut3) groups in 9 rapidly exchange on the NMR time scale at 70 °C, ΔH‡ = 9.2(3) kcal mol-1, ΔS‡ = -5(1) cal mol-1 K-1, and ΔG298‡ = 10.7(7) kcal mol-1. Compound 8 reacts with hydrogen to give the dihydrido complex Ru5(CO) 11(η6-C6H6)(μ6-C) [Pt(PBut3)](μ-H)2, 10, in 59% yield. This compound consists of a closed Ru5Pt octahedron with two hydride ligands bridging two of the four Pt-Ru bonds.",

author = "Adams, {Richard D.} and Burjor Captain and Pellechia, {Perry J.} and Lei Zhu",

year = "2004",

month = nov,

day = "1",

doi = "10.1021/ic049004l",

language = "English (US)",

volume = "43",

pages = "7243--7249",

journal = "Inorganic Chemistry",

issn = "0020-1669",

publisher = "American Chemical Society",

number = "22",

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TY - JOUR

T1 - Addition of Pt(PBut3) groups to Ru 5(CO)12(η6-C6H 6)(μ5-C). Synthesis, structures, and dynamical activity

AU - Adams, Richard D.

AU - Captain, Burjor

AU - Pellechia, Perry J.

AU - Zhu, Lei

PY - 2004/11/1

Y1 - 2004/11/1

N2 - The reaction of Ru5(CO)12(η6-C 6H6)(μ5-C), 7, with Pt(PBut 3)2 yielded two products Ru5(CO) 12(η6-C6H6)(μ6-C) [Pt(PBut3)], 8, and Ru5(CO)12(η 6-C6H6)(μ6-C)[Pt(PBu t3)]2, 9. Compound 8 contains a Ru 5Pt metal core in an open octahedral structure. In solution, 8 exists as a mixture of two isomers that interconvert rapidly on the NMR time scale at 20 °C, ΔH‡ = 7.1(1) kcal mol-1, ΔS‡ = -5.1(6) cal mol-1 K-1, and ΔG298‡ = 8.6(3) kcal mol-1. Compound 9 is structurally similar to 8, but has an additional Pt(PBut3) group bridging an Ru-Ru edge of the cluster. The two Pt(PBut3) groups in 9 rapidly exchange on the NMR time scale at 70 °C, ΔH‡ = 9.2(3) kcal mol-1, ΔS‡ = -5(1) cal mol-1 K-1, and ΔG298‡ = 10.7(7) kcal mol-1. Compound 8 reacts with hydrogen to give the dihydrido complex Ru5(CO) 11(η6-C6H6)(μ6-C) [Pt(PBut3)](μ-H)2, 10, in 59% yield. This compound consists of a closed Ru5Pt octahedron with two hydride ligands bridging two of the four Pt-Ru bonds.

AB - The reaction of Ru5(CO)12(η6-C 6H6)(μ5-C), 7, with Pt(PBut 3)2 yielded two products Ru5(CO) 12(η6-C6H6)(μ6-C) [Pt(PBut3)], 8, and Ru5(CO)12(η 6-C6H6)(μ6-C)[Pt(PBu t3)]2, 9. Compound 8 contains a Ru 5Pt metal core in an open octahedral structure. In solution, 8 exists as a mixture of two isomers that interconvert rapidly on the NMR time scale at 20 °C, ΔH‡ = 7.1(1) kcal mol-1, ΔS‡ = -5.1(6) cal mol-1 K-1, and ΔG298‡ = 8.6(3) kcal mol-1. Compound 9 is structurally similar to 8, but has an additional Pt(PBut3) group bridging an Ru-Ru edge of the cluster. The two Pt(PBut3) groups in 9 rapidly exchange on the NMR time scale at 70 °C, ΔH‡ = 9.2(3) kcal mol-1, ΔS‡ = -5(1) cal mol-1 K-1, and ΔG298‡ = 10.7(7) kcal mol-1. Compound 8 reacts with hydrogen to give the dihydrido complex Ru5(CO) 11(η6-C6H6)(μ6-C) [Pt(PBut3)](μ-H)2, 10, in 59% yield. This compound consists of a closed Ru5Pt octahedron with two hydride ligands bridging two of the four Pt-Ru bonds.

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U2 - 10.1021/ic049004l

DO - 10.1021/ic049004l

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AN - SCOPUS:7244240835

VL - 43

SP - 7243

EP - 7249

JO - Inorganic Chemistry

JF - Inorganic Chemistry

SN - 0020-1669

IS - 22

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