Homogeneous hydrogenation of diphenylacetylene in the presence of Ru3(CO)9L3 (L=PPh3, PEt3). The crystal structure of Ru3(CO)10(PEt3)2: A reaction intermediate?

Giuliana Gervasio; Roberto Giordano; Domenica Marabello; Enrico Sappa

doi:10.1016/S0022-328X(99)00349-6

Homogeneous hydrogenation of diphenylacetylene in the presence of Ru₃(CO)₉L₃ (L=PPh₃, PEt₃). The crystal structure of Ru₃(CO)₁₀(PEt₃)₂: A reaction intermediate?

Giuliana Gervasio
, Roberto Giordano
, Domenica Marabello
, Enrico Sappa

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

Abstract

The phosphine-substituted clusters Ru₃(CO)₉L₃ (L=PPh₃, 1; L=PEt₃, 2) are active homogeneous catalysts for the hydrogenation of diphenylacetylene. In the catalytic reactions involving complex 2, formation of Ru₃(CO)₁₀(PEt₃)₂ (3) has been observed. This complex shows a hydrogenating activity greater than that of the parent complex 2. In the light of these results and of the observed effect of dihydrogen pressure and substrate/cluster ratio, reaction mechanisms are discussed. The structure of 3 has been characterized by X-ray diffraction and is compared with those of other phosphine-substituted triruthenium clusters. Compound 3 crystallizes in the monoclinic space group P2₁ with a=9.368(7), b=12.20(2), c=13.554(9) Å, β=102.63(8)° and Z=2. Refinement of 4975 data gave R₁=0.0417 and wR₂=0.1105. The two phosphorus ligands occupy equatorial positions on adjacent metal atoms so that they are trans to each other at the ends of the Ru-Ru vector. The presence of bent semi-bridging carbonyl groups makes the molecule chiral and its absolute structure was determined.

Original language	English
Pages (from-to)	83-91
Number of pages	9
Journal	Journal of Organometallic Chemistry
Volume	588
Issue number	1
DOIs	https://doi.org/10.1016/S0022-328X(99)00349-6
Publication status	Published - 1 Oct 1999
Externally published	Yes

Keywords

Homogeneous catalysis
Hydrogenation
Phosphine-substituted ruthenium clusters
Reaction intermediates
X-ray absolute structure

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10.1016/S0022-328X(99)00349-6

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@article{b644a0a17f0546da8110a702b03154cb,

title = "Homogeneous hydrogenation of diphenylacetylene in the presence of Ru3(CO)9L3 (L=PPh3, PEt3). The crystal structure of Ru3(CO)10(PEt3)2: A reaction intermediate?",

abstract = "The phosphine-substituted clusters Ru3(CO)9L3 (L=PPh3, 1; L=PEt3, 2) are active homogeneous catalysts for the hydrogenation of diphenylacetylene. In the catalytic reactions involving complex 2, formation of Ru3(CO)10(PEt3)2 (3) has been observed. This complex shows a hydrogenating activity greater than that of the parent complex 2. In the light of these results and of the observed effect of dihydrogen pressure and substrate/cluster ratio, reaction mechanisms are discussed. The structure of 3 has been characterized by X-ray diffraction and is compared with those of other phosphine-substituted triruthenium clusters. Compound 3 crystallizes in the monoclinic space group P21 with a=9.368(7), b=12.20(2), c=13.554(9) {\AA}, β=102.63(8)° and Z=2. Refinement of 4975 data gave R1=0.0417 and wR2=0.1105. The two phosphorus ligands occupy equatorial positions on adjacent metal atoms so that they are trans to each other at the ends of the Ru-Ru vector. The presence of bent semi-bridging carbonyl groups makes the molecule chiral and its absolute structure was determined.",

keywords = "Homogeneous catalysis, Hydrogenation, Phosphine-substituted ruthenium clusters, Reaction intermediates, X-ray absolute structure",

author = "Giuliana Gervasio and Roberto Giordano and Domenica Marabello and Enrico Sappa",

note = "Funding Information: Support for this work has been obtained from MURST (Italy) under the form of a cofinancing program between the Universit{\`a} di Torino and the Universit{\`a} del Piemonte Orientale (Alessandria). ",

year = "1999",

month = oct,

day = "1",

doi = "10.1016/S0022-328X(99)00349-6",

language = "English",

volume = "588",

pages = "83--91",

journal = "Journal of Organometallic Chemistry",

issn = "0022-328X",

publisher = "Elsevier B.V.",

number = "1",

}

Homogeneous hydrogenation of diphenylacetylene in the presence of Ru₃(CO)₉L₃ (L=PPh₃, PEt₃). The crystal structure of Ru₃(CO)₁₀(PEt₃)₂: A reaction intermediate? / Gervasio, Giuliana; Giordano, Roberto; Marabello, Domenica et al.
In: Journal of Organometallic Chemistry, Vol. 588, No. 1, 01.10.1999, p. 83-91.

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

TY - JOUR

T1 - Homogeneous hydrogenation of diphenylacetylene in the presence of Ru3(CO)9L3 (L=PPh3, PEt3). The crystal structure of Ru3(CO)10(PEt3)2

T2 - A reaction intermediate?

AU - Gervasio, Giuliana

AU - Giordano, Roberto

AU - Marabello, Domenica

AU - Sappa, Enrico

N1 - Funding Information: Support for this work has been obtained from MURST (Italy) under the form of a cofinancing program between the Università di Torino and the Università del Piemonte Orientale (Alessandria).

PY - 1999/10/1

Y1 - 1999/10/1

N2 - The phosphine-substituted clusters Ru3(CO)9L3 (L=PPh3, 1; L=PEt3, 2) are active homogeneous catalysts for the hydrogenation of diphenylacetylene. In the catalytic reactions involving complex 2, formation of Ru3(CO)10(PEt3)2 (3) has been observed. This complex shows a hydrogenating activity greater than that of the parent complex 2. In the light of these results and of the observed effect of dihydrogen pressure and substrate/cluster ratio, reaction mechanisms are discussed. The structure of 3 has been characterized by X-ray diffraction and is compared with those of other phosphine-substituted triruthenium clusters. Compound 3 crystallizes in the monoclinic space group P21 with a=9.368(7), b=12.20(2), c=13.554(9) Å, β=102.63(8)° and Z=2. Refinement of 4975 data gave R1=0.0417 and wR2=0.1105. The two phosphorus ligands occupy equatorial positions on adjacent metal atoms so that they are trans to each other at the ends of the Ru-Ru vector. The presence of bent semi-bridging carbonyl groups makes the molecule chiral and its absolute structure was determined.

AB - The phosphine-substituted clusters Ru3(CO)9L3 (L=PPh3, 1; L=PEt3, 2) are active homogeneous catalysts for the hydrogenation of diphenylacetylene. In the catalytic reactions involving complex 2, formation of Ru3(CO)10(PEt3)2 (3) has been observed. This complex shows a hydrogenating activity greater than that of the parent complex 2. In the light of these results and of the observed effect of dihydrogen pressure and substrate/cluster ratio, reaction mechanisms are discussed. The structure of 3 has been characterized by X-ray diffraction and is compared with those of other phosphine-substituted triruthenium clusters. Compound 3 crystallizes in the monoclinic space group P21 with a=9.368(7), b=12.20(2), c=13.554(9) Å, β=102.63(8)° and Z=2. Refinement of 4975 data gave R1=0.0417 and wR2=0.1105. The two phosphorus ligands occupy equatorial positions on adjacent metal atoms so that they are trans to each other at the ends of the Ru-Ru vector. The presence of bent semi-bridging carbonyl groups makes the molecule chiral and its absolute structure was determined.

KW - Homogeneous catalysis

KW - Hydrogenation

KW - Phosphine-substituted ruthenium clusters

KW - Reaction intermediates

KW - X-ray absolute structure

UR - https://www.scopus.com/pages/publications/0002882944

U2 - 10.1016/S0022-328X(99)00349-6

DO - 10.1016/S0022-328X(99)00349-6

M3 - Article

SN - 0022-328X

VL - 588

SP - 83

EP - 91

JO - Journal of Organometallic Chemistry

JF - Journal of Organometallic Chemistry

IS - 1

ER -

Homogeneous hydrogenation of diphenylacetylene in the presence of Ru₃(CO)₉L₃ (L=PPh₃, PEt₃). The crystal structure of Ru₃(CO)₁₀(PEt₃)₂: A reaction intermediate?

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