Search for heterobimetallic dihydrides from the reaction of H2 with metal-metal bonds

Charles P. Casey; R Morris Bullock

doi:10.1016/0304-5102(82)80088-6

Search for heterobimetallic dihydrides from the reaction of H2 with metal-metal bonds

Charles P. Casey, R Morris Bullock

Pacific Northwest National Laboratory

Research output: Contribution to journal › Article

12 Citations (Scopus)

Abstract

The arsenic-bridged bimetallic compounds (CO)₄FeAs(CH₃)₂M (M = Mn(CO)₄, 1 ; M = Co(CO)₃, 2 ; M = Mo(C₅H₅)(CO)₂, 3) were investigated as possible CO and alkene hydrogenation catalysts. Heating these compounds under H₂ did not lead to any observable metal dihydride species but gave thermal decomposition. Thermal stabilities were found to be in the order 3 > 1 > 2. 1 and 3 reacted with CO at 45 °C and 110 °C, respectively, to give compounds 5 and 6 in which the metal/3-metal bond has been cleaved and CO added. Heating 1, 2, or 3 under CO and H₂ gave no observable CH₃OH or CH₄. Evidence that metal hydride species might be in equilibrium with 1, 2, or 3 was obtained from the observation that solutions of 1, 2, or 3 which are heated under H₂ catalyze the hydrogenation of 1-octene to n-octane and the isomerization of 1-octene to cis- and trans-2-octene.

Original language	English
Pages (from-to)	283-292
Number of pages	10
Journal	Journal of Molecular Catalysis
Volume	14
Issue number	3
DOIs	https://doi.org/10.1016/0304-5102(82)80088-6
Publication status	Published - 1982

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Casey, C. P., & Bullock, R. M. (1982). Search for heterobimetallic dihydrides from the reaction of H2 with metal-metal bonds. Journal of Molecular Catalysis, 14(3), 283-292. https://doi.org/10.1016/0304-5102(82)80088-6

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title = "Search for heterobimetallic dihydrides from the reaction of H2 with metal-metal bonds",

abstract = "The arsenic-bridged bimetallic compounds (CO)4FeAs(CH3)2M (M = Mn(CO)4, 1 ; M = Co(CO)3, 2 ; M = Mo(C5H5)(CO)2, 3) were investigated as possible CO and alkene hydrogenation catalysts. Heating these compounds under H2 did not lead to any observable metal dihydride species but gave thermal decomposition. Thermal stabilities were found to be in the order 3 > 1 > 2. 1 and 3 reacted with CO at 45 °C and 110 °C, respectively, to give compounds 5 and 6 in which the metal/3-metal bond has been cleaved and CO added. Heating 1, 2, or 3 under CO and H2 gave no observable CH3OH or CH4. Evidence that metal hydride species might be in equilibrium with 1, 2, or 3 was obtained from the observation that solutions of 1, 2, or 3 which are heated under H2 catalyze the hydrogenation of 1-octene to n-octane and the isomerization of 1-octene to cis- and trans-2-octene.",

author = "Casey, {Charles P.} and Bullock, {R Morris}",

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AU - Casey, Charles P.

AU - Bullock, R Morris

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N2 - The arsenic-bridged bimetallic compounds (CO)4FeAs(CH3)2M (M = Mn(CO)4, 1 ; M = Co(CO)3, 2 ; M = Mo(C5H5)(CO)2, 3) were investigated as possible CO and alkene hydrogenation catalysts. Heating these compounds under H2 did not lead to any observable metal dihydride species but gave thermal decomposition. Thermal stabilities were found to be in the order 3 > 1 > 2. 1 and 3 reacted with CO at 45 °C and 110 °C, respectively, to give compounds 5 and 6 in which the metal/3-metal bond has been cleaved and CO added. Heating 1, 2, or 3 under CO and H2 gave no observable CH3OH or CH4. Evidence that metal hydride species might be in equilibrium with 1, 2, or 3 was obtained from the observation that solutions of 1, 2, or 3 which are heated under H2 catalyze the hydrogenation of 1-octene to n-octane and the isomerization of 1-octene to cis- and trans-2-octene.

AB - The arsenic-bridged bimetallic compounds (CO)4FeAs(CH3)2M (M = Mn(CO)4, 1 ; M = Co(CO)3, 2 ; M = Mo(C5H5)(CO)2, 3) were investigated as possible CO and alkene hydrogenation catalysts. Heating these compounds under H2 did not lead to any observable metal dihydride species but gave thermal decomposition. Thermal stabilities were found to be in the order 3 > 1 > 2. 1 and 3 reacted with CO at 45 °C and 110 °C, respectively, to give compounds 5 and 6 in which the metal/3-metal bond has been cleaved and CO added. Heating 1, 2, or 3 under CO and H2 gave no observable CH3OH or CH4. Evidence that metal hydride species might be in equilibrium with 1, 2, or 3 was obtained from the observation that solutions of 1, 2, or 3 which are heated under H2 catalyze the hydrogenation of 1-octene to n-octane and the isomerization of 1-octene to cis- and trans-2-octene.

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