Transition-metal complexes with nano-sized phosphine and pyridine ligands-catalysis, fluxional behavior and molecular recognition

Yasushi Obora, Makoto Tokunaga, Yasushi Tsuji

Research output: Contribution to journalReview article

2 Citations (Scopus)

Abstract

Nano-sized phosphine and pyridine ligands having tetraphenylphenyl-, m-terphenyl-, poly(benzylether) moieties were synthesized. These ligands showed a remarkable effect on homogeneous transition metal catalyzed reactions. Pd(II) complexes with tetraphenylphenyl substituted pyridine ligands show high catalytic activities for oxidation of ketones suppressing Pd black formation and maintains the catalytic activity for a long time. Rh(I) complex catalysts with m-terphenyl substituted phosphine ligands showed remarkable rate acceleration in the hydrosilylation of ketones. In addition, several phosphinocalixarene ligands were synthesized and their coordination studies with Pd(II), Pt(II), Ru(II), Ir(I), and Rh(I) metals were documented. Ir(I) and Rh(I) cationic complexes with a 1,3,5-triphosphinocalix[6]arene ligand showed dynamic behavior with size-selective molecular recognition.

Original languageEnglish
Pages (from-to)259-268
Number of pages10
JournalCatalysis Surveys from Asia
Volume9
Issue number4
DOIs
Publication statusPublished - Dec 1 2005
Externally publishedYes

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phosphine
Molecular recognition
Coordination Complexes
Metal complexes
Pyridine
Catalysis
Transition metals
Ligands
Ketones
Catalyst activity
Hydrosilylation
pyridine
Metals

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

Cite this

Transition-metal complexes with nano-sized phosphine and pyridine ligands-catalysis, fluxional behavior and molecular recognition. / Obora, Yasushi; Tokunaga, Makoto; Tsuji, Yasushi.

In: Catalysis Surveys from Asia, Vol. 9, No. 4, 01.12.2005, p. 259-268.

Research output: Contribution to journalReview article

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N2 - Nano-sized phosphine and pyridine ligands having tetraphenylphenyl-, m-terphenyl-, poly(benzylether) moieties were synthesized. These ligands showed a remarkable effect on homogeneous transition metal catalyzed reactions. Pd(II) complexes with tetraphenylphenyl substituted pyridine ligands show high catalytic activities for oxidation of ketones suppressing Pd black formation and maintains the catalytic activity for a long time. Rh(I) complex catalysts with m-terphenyl substituted phosphine ligands showed remarkable rate acceleration in the hydrosilylation of ketones. In addition, several phosphinocalixarene ligands were synthesized and their coordination studies with Pd(II), Pt(II), Ru(II), Ir(I), and Rh(I) metals were documented. Ir(I) and Rh(I) cationic complexes with a 1,3,5-triphosphinocalix[6]arene ligand showed dynamic behavior with size-selective molecular recognition.

AB - Nano-sized phosphine and pyridine ligands having tetraphenylphenyl-, m-terphenyl-, poly(benzylether) moieties were synthesized. These ligands showed a remarkable effect on homogeneous transition metal catalyzed reactions. Pd(II) complexes with tetraphenylphenyl substituted pyridine ligands show high catalytic activities for oxidation of ketones suppressing Pd black formation and maintains the catalytic activity for a long time. Rh(I) complex catalysts with m-terphenyl substituted phosphine ligands showed remarkable rate acceleration in the hydrosilylation of ketones. In addition, several phosphinocalixarene ligands were synthesized and their coordination studies with Pd(II), Pt(II), Ru(II), Ir(I), and Rh(I) metals were documented. Ir(I) and Rh(I) cationic complexes with a 1,3,5-triphosphinocalix[6]arene ligand showed dynamic behavior with size-selective molecular recognition.

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