Synthesis and reactivity of bimetallic palladium(II) methyl complexes with new functional phosphine ligands

Jang Sub Kim, Ayusman Sen, Ilia A. Guzei, Louise M. Liable-Sands, Arnold L. Rheingold

Research output: Contribution to journalArticle

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Abstract

Bimetallic palladium(II) methyl complexes, [Pd(dppmpH)(CH3)(μ-Cl)]2 (1) and [Pd(dippmpH)(CH3)(μ-Cl)]2 (2) were synthesized by the reaction of (COD)Pd(CH3)(Cl) (COD = 1,5-cyclooctadiene) with the new functional phosphine ligands 2-diphenylphosphino-4-methylphenol (dppmpH) and 2-diisopropylphosphino-4-methylphenol (dippmpH). The homolytic cleavage of the CH3-Pd bond was found to occur when complexes 1 and 2 were heated or photolyzed to form a methyl radical and the corresponding oxygen-bridged bimetallic palladium(II) complexes, [Pd(dppmp)(Cl)]2 (3) and [Pd(dippmp)(Cl)]2 (4), respectively. The molecular structures of complexes 1, 3 and 4 were determined by single-crystal X-ray diffraction. Reaction of small molecules, such as CO, SO2 and CH2=CH2, with complexes 1 and 2 was observed and characterized by IR, 1H, 13C and 31P{1H} NMR spectroscopy.

Original languageEnglish (US)
Pages (from-to)4726-4731
Number of pages6
JournalJournal of the Chemical Society. Dalton Transactions
Issue number24
StatePublished - Dec 21 2002

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phosphine
Palladium
Ligands
Carbon Monoxide
Molecular structure
Nuclear magnetic resonance spectroscopy
Single crystals
Oxygen
X ray diffraction
Molecules
4-cresol

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

Cite this

Kim, Jang Sub ; Sen, Ayusman ; Guzei, Ilia A. ; Liable-Sands, Louise M. ; Rheingold, Arnold L. / Synthesis and reactivity of bimetallic palladium(II) methyl complexes with new functional phosphine ligands. In: Journal of the Chemical Society. Dalton Transactions. 2002 ; No. 24. pp. 4726-4731.
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abstract = "Bimetallic palladium(II) methyl complexes, [Pd(dppmpH)(CH3)(μ-Cl)]2 (1) and [Pd(dippmpH)(CH3)(μ-Cl)]2 (2) were synthesized by the reaction of (COD)Pd(CH3)(Cl) (COD = 1,5-cyclooctadiene) with the new functional phosphine ligands 2-diphenylphosphino-4-methylphenol (dppmpH) and 2-diisopropylphosphino-4-methylphenol (dippmpH). The homolytic cleavage of the CH3-Pd bond was found to occur when complexes 1 and 2 were heated or photolyzed to form a methyl radical and the corresponding oxygen-bridged bimetallic palladium(II) complexes, [Pd(dppmp)(Cl)]2 (3) and [Pd(dippmp)(Cl)]2 (4), respectively. The molecular structures of complexes 1, 3 and 4 were determined by single-crystal X-ray diffraction. Reaction of small molecules, such as CO, SO2 and CH2=CH2, with complexes 1 and 2 was observed and characterized by IR, 1H, 13C and 31P{1H} NMR spectroscopy.",
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Synthesis and reactivity of bimetallic palladium(II) methyl complexes with new functional phosphine ligands. / Kim, Jang Sub; Sen, Ayusman; Guzei, Ilia A.; Liable-Sands, Louise M.; Rheingold, Arnold L.

In: Journal of the Chemical Society. Dalton Transactions, No. 24, 21.12.2002, p. 4726-4731.

Research output: Contribution to journalArticle

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T1 - Synthesis and reactivity of bimetallic palladium(II) methyl complexes with new functional phosphine ligands

AU - Kim, Jang Sub

AU - Sen, Ayusman

AU - Guzei, Ilia A.

AU - Liable-Sands, Louise M.

AU - Rheingold, Arnold L.

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AB - Bimetallic palladium(II) methyl complexes, [Pd(dppmpH)(CH3)(μ-Cl)]2 (1) and [Pd(dippmpH)(CH3)(μ-Cl)]2 (2) were synthesized by the reaction of (COD)Pd(CH3)(Cl) (COD = 1,5-cyclooctadiene) with the new functional phosphine ligands 2-diphenylphosphino-4-methylphenol (dppmpH) and 2-diisopropylphosphino-4-methylphenol (dippmpH). The homolytic cleavage of the CH3-Pd bond was found to occur when complexes 1 and 2 were heated or photolyzed to form a methyl radical and the corresponding oxygen-bridged bimetallic palladium(II) complexes, [Pd(dppmp)(Cl)]2 (3) and [Pd(dippmp)(Cl)]2 (4), respectively. The molecular structures of complexes 1, 3 and 4 were determined by single-crystal X-ray diffraction. Reaction of small molecules, such as CO, SO2 and CH2=CH2, with complexes 1 and 2 was observed and characterized by IR, 1H, 13C and 31P{1H} NMR spectroscopy.

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