Synthesis of the first carbon dioxide coordinated palladium(0) complex, Pd(η2-CO2)(PMePh2)2

Masato Sakamoto; Isao Shimizu; Akio Yamamoto

Synthesis of the first carbon dioxide coordinated palladium(0) complex, Pd(η²-CO₂)(PMePh₂)₂

Masato Sakamoto^*, Isao Shimizu, Akio Yamamoto

^*Corresponding author for this work

Waseda University

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

56 Citations (Scopus)

Abstract

A new palladium(0) complex, (η²-carbon dioxide)bis(methyldiphenylphosphine)palladium(0) (Pd(CO₂)(PMePh₂)₂; 3), has been prepared by the reaction of PdEt₂(PMePh₂)₂ (1) with methyl acrylate followed by treatment with CO₂. The complex was characterized by means of ¹H, ¹³C{¹H}, and ³¹P{¹H} NMR and IR spectroscopy and the chemical reactions. Spectroscopic evidence indicates that complex 3 has a side-on (η²) coordination mode. Thermal decomposition of the solution of complex 3 caused cleavage of the Pd-coordinated CO₂ to give CO and O=PMePh₂, together with CO₂. Hydrogenation of 3 yielded HCO₂H. Catalytic conversion of H₂ and CO₂ into formic acid was found to be promoted by PdCl₂L₂ (L = PMe₃, PMePh₂, PPh₃).

Original language	English
Pages (from-to)	407-409
Number of pages	3
Journal	Organometallics
Volume	13
Issue number	2
Publication status	Published - 1994

ASJC Scopus subject areas

Inorganic Chemistry
Organic Chemistry

Cite this

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title = "Synthesis of the first carbon dioxide coordinated palladium(0) complex, Pd(η2-CO2)(PMePh2)2 ",

abstract = "A new palladium(0) complex, (η2-carbon dioxide)bis(methyldiphenylphosphine)palladium(0) (Pd(CO2)(PMePh2)2; 3), has been prepared by the reaction of PdEt2(PMePh2)2 (1) with methyl acrylate followed by treatment with CO2. The complex was characterized by means of 1H, 13C{1H}, and 31P{1H} NMR and IR spectroscopy and the chemical reactions. Spectroscopic evidence indicates that complex 3 has a side-on (η2) coordination mode. Thermal decomposition of the solution of complex 3 caused cleavage of the Pd-coordinated CO2 to give CO and O=PMePh2, together with CO2. Hydrogenation of 3 yielded HCO2H. Catalytic conversion of H2 and CO2 into formic acid was found to be promoted by PdCl2L2 (L = PMe3, PMePh2, PPh3).",

author = "Masato Sakamoto and Isao Shimizu and Akio Yamamoto",

year = "1994",

language = "English",

volume = "13",

pages = "407--409",

journal = "Organometallics",

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publisher = "American Chemical Society",

number = "2",

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T1 - Synthesis of the first carbon dioxide coordinated palladium(0) complex, Pd(η2-CO2)(PMePh2)2

AU - Sakamoto, Masato

AU - Shimizu, Isao

AU - Yamamoto, Akio

PY - 1994

Y1 - 1994

N2 - A new palladium(0) complex, (η2-carbon dioxide)bis(methyldiphenylphosphine)palladium(0) (Pd(CO2)(PMePh2)2; 3), has been prepared by the reaction of PdEt2(PMePh2)2 (1) with methyl acrylate followed by treatment with CO2. The complex was characterized by means of 1H, 13C{1H}, and 31P{1H} NMR and IR spectroscopy and the chemical reactions. Spectroscopic evidence indicates that complex 3 has a side-on (η2) coordination mode. Thermal decomposition of the solution of complex 3 caused cleavage of the Pd-coordinated CO2 to give CO and O=PMePh2, together with CO2. Hydrogenation of 3 yielded HCO2H. Catalytic conversion of H2 and CO2 into formic acid was found to be promoted by PdCl2L2 (L = PMe3, PMePh2, PPh3).

AB - A new palladium(0) complex, (η2-carbon dioxide)bis(methyldiphenylphosphine)palladium(0) (Pd(CO2)(PMePh2)2; 3), has been prepared by the reaction of PdEt2(PMePh2)2 (1) with methyl acrylate followed by treatment with CO2. The complex was characterized by means of 1H, 13C{1H}, and 31P{1H} NMR and IR spectroscopy and the chemical reactions. Spectroscopic evidence indicates that complex 3 has a side-on (η2) coordination mode. Thermal decomposition of the solution of complex 3 caused cleavage of the Pd-coordinated CO2 to give CO and O=PMePh2, together with CO2. Hydrogenation of 3 yielded HCO2H. Catalytic conversion of H2 and CO2 into formic acid was found to be promoted by PdCl2L2 (L = PMe3, PMePh2, PPh3).

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SN - 0276-7333

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Synthesis of the first carbon dioxide coordinated palladium(0) complex, Pd(η²-CO₂)(PMePh₂)₂

Abstract

ASJC Scopus subject areas

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