Reversible Inter- and Intramolecular Carbon-Hydrogen Activation, Hydrogen Addition, and Catalysis by the Unsaturated Complex Pt(IPr)(SnBut 3)(H)

Anjaneyulu Koppaka, Burjor Captain

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The complex Pt(IPr)(SnBut 3)(H) (1) was obtained from the reaction of Pt(COD)2 with But 3SnH and IPr [IPr = N,N′-bis(2,6-diisopropylphenyl)imidazol-2-ylidene]. Complex 1 undergoes exchange reactions with deuterated solvents (C6D6, toluene-d8, and CD2Cl2), where the hydride ligand and the methyl hydrogen atoms on the isopropyl group of the IPr ligand have been replaced by deuterium atoms. Complex 1 reacts with H2 gas reversibly at room temperature to yield the complex Pt(IPr)(SnBut 3)(H)3 (2). Complex 2 also undergoes exchange reactions with deuterated solvents as in 1 to deuterate the hydride ligands and the methyl hydrogen atoms on the isopropyl group of the IPr ligand. Complex 1 catalyzes the hydrogenation of styrene to ethylbenzene at room temperature. The reaction of 1 with 1 equiv of styrene at -20°C yields the η2-coordinated product Pt(IPr)(SnBut 3)(η2-CH2CHPh)(H) (3), and with 2 equiv of styrene, it forms Pt(IPr)(η2-CH2CHPh)2 (4).

Original languageEnglish (US)
Pages (from-to)2679-2681
Number of pages3
JournalInorganic Chemistry
Volume55
Issue number6
DOIs
StatePublished - Mar 21 2016

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Catalysis
catalysis
Styrene
Hydrogen
Carbon
Chemical activation
styrenes
activation
Ligands
ligands
carbon
hydrogen
Hydrides
Atoms
hydrides
hydrogen atoms
crack opening displacement
Deuterium
Toluene
room temperature

ASJC Scopus subject areas

  • Inorganic Chemistry
  • Physical and Theoretical Chemistry

Cite this

Reversible Inter- and Intramolecular Carbon-Hydrogen Activation, Hydrogen Addition, and Catalysis by the Unsaturated Complex Pt(IPr)(SnBut 3)(H). / Koppaka, Anjaneyulu; Captain, Burjor.

In: Inorganic Chemistry, Vol. 55, No. 6, 21.03.2016, p. 2679-2681.

Research output: Contribution to journalArticle

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N2 - The complex Pt(IPr)(SnBut 3)(H) (1) was obtained from the reaction of Pt(COD)2 with But 3SnH and IPr [IPr = N,N′-bis(2,6-diisopropylphenyl)imidazol-2-ylidene]. Complex 1 undergoes exchange reactions with deuterated solvents (C6D6, toluene-d8, and CD2Cl2), where the hydride ligand and the methyl hydrogen atoms on the isopropyl group of the IPr ligand have been replaced by deuterium atoms. Complex 1 reacts with H2 gas reversibly at room temperature to yield the complex Pt(IPr)(SnBut 3)(H)3 (2). Complex 2 also undergoes exchange reactions with deuterated solvents as in 1 to deuterate the hydride ligands and the methyl hydrogen atoms on the isopropyl group of the IPr ligand. Complex 1 catalyzes the hydrogenation of styrene to ethylbenzene at room temperature. The reaction of 1 with 1 equiv of styrene at -20°C yields the η2-coordinated product Pt(IPr)(SnBut 3)(η2-CH2CHPh)(H) (3), and with 2 equiv of styrene, it forms Pt(IPr)(η2-CH2CHPh)2 (4).

AB - The complex Pt(IPr)(SnBut 3)(H) (1) was obtained from the reaction of Pt(COD)2 with But 3SnH and IPr [IPr = N,N′-bis(2,6-diisopropylphenyl)imidazol-2-ylidene]. Complex 1 undergoes exchange reactions with deuterated solvents (C6D6, toluene-d8, and CD2Cl2), where the hydride ligand and the methyl hydrogen atoms on the isopropyl group of the IPr ligand have been replaced by deuterium atoms. Complex 1 reacts with H2 gas reversibly at room temperature to yield the complex Pt(IPr)(SnBut 3)(H)3 (2). Complex 2 also undergoes exchange reactions with deuterated solvents as in 1 to deuterate the hydride ligands and the methyl hydrogen atoms on the isopropyl group of the IPr ligand. Complex 1 catalyzes the hydrogenation of styrene to ethylbenzene at room temperature. The reaction of 1 with 1 equiv of styrene at -20°C yields the η2-coordinated product Pt(IPr)(SnBut 3)(η2-CH2CHPh)(H) (3), and with 2 equiv of styrene, it forms Pt(IPr)(η2-CH2CHPh)2 (4).

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