Isolation and characterization of [(RhCp*)2{η1: η4:η 2-μ-CHC(Ph)CHC(Ph)CHCH2}]+ (Cp*=η5-C5Me5). Reinvestigation of the carbon-carbon bond formation between μ-CH2 group and alkynes.

Yuichi Kaneko, Takayoshi Suzuki, Kiyoshi Isobe, Peter M. Maitlis

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21 Citations (Scopus)

Abstract

On reinvestigation of the reaction of [(RhCp*)2(μ-CH2)2(CH 3CN)2]2+ (1) with alkynes we have found a much cleaner reaction system than the previous ones which has allowed us to elucidate the reaction mechanism of the intriguing carbon-carbon bond formation of the μ-CH2 groups and alkynes and to isolate the pure reaction product of [(RhCp*)2142-μ-CHC(Ph)CHC(Ph)CHCH2}]+ (2). The structure of 2 as the BPh4- salt has been determined by an X-ray diffraction study. Similar dirhodium complexes [(RhCp*)2142-μ-CHC(COOMe)CHC(COOMe)CHCH2}]+ (3) and [(RhCp*)2142-μ-CHC(COOMe)CHC(Ph)CHCH2}]+ (4) have been prepared and characterized spectroscopically.

Original languageEnglish
Pages (from-to)155-161
Number of pages7
JournalJournal of Organometallic Chemistry
Volume554
Issue number2
Publication statusPublished - Mar 10 1998
Externally publishedYes

Fingerprint

Alkynes
alkynes
isolation
Carbon
carbon
Reaction products
cleaners
Salts
X-Ray Diffraction
X ray diffraction
reaction products
methylidyne
salts
diffraction
x rays

Keywords

  • μ-Methylene ligand
  • Alkyne
  • Carbon-carbon bond formation
  • Insertion reaction
  • Rhodium

ASJC Scopus subject areas

  • Biochemistry
  • Inorganic Chemistry
  • Organic Chemistry
  • Physical and Theoretical Chemistry
  • Materials Chemistry

Cite this

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title = "Isolation and characterization of [(RhCp*)2{η1: η4:η 2-μ-CHC(Ph)CHC(Ph)CHCH2}]+ (Cp*=η5-C5Me5). Reinvestigation of the carbon-carbon bond formation between μ-CH2 group and alkynes.",
abstract = "On reinvestigation of the reaction of [(RhCp*)2(μ-CH2)2(CH 3CN)2]2+ (1) with alkynes we have found a much cleaner reaction system than the previous ones which has allowed us to elucidate the reaction mechanism of the intriguing carbon-carbon bond formation of the μ-CH2 groups and alkynes and to isolate the pure reaction product of [(RhCp*)2{η1:η4:η 2-μ-CHC(Ph)CHC(Ph)CHCH2}]+ (2). The structure of 2 as the BPh4- salt has been determined by an X-ray diffraction study. Similar dirhodium complexes [(RhCp*)2{η1:η4:η 2-μ-CHC(COOMe)CHC(COOMe)CHCH2}]+ (3) and [(RhCp*)2{η1:η4:η 2-μ-CHC(COOMe)CHC(Ph)CHCH2}]+ (4) have been prepared and characterized spectroscopically.",
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TY - JOUR

T1 - Isolation and characterization of [(RhCp*)2{η1

T2 - η4:η 2-μ-CHC(Ph)CHC(Ph)CHCH2}]+ (Cp*=η5-C5Me5). Reinvestigation of the carbon-carbon bond formation between μ-CH2 group and alkynes.

AU - Kaneko, Yuichi

AU - Suzuki, Takayoshi

AU - Isobe, Kiyoshi

AU - Maitlis, Peter M.

PY - 1998/3/10

Y1 - 1998/3/10

N2 - On reinvestigation of the reaction of [(RhCp*)2(μ-CH2)2(CH 3CN)2]2+ (1) with alkynes we have found a much cleaner reaction system than the previous ones which has allowed us to elucidate the reaction mechanism of the intriguing carbon-carbon bond formation of the μ-CH2 groups and alkynes and to isolate the pure reaction product of [(RhCp*)2{η1:η4:η 2-μ-CHC(Ph)CHC(Ph)CHCH2}]+ (2). The structure of 2 as the BPh4- salt has been determined by an X-ray diffraction study. Similar dirhodium complexes [(RhCp*)2{η1:η4:η 2-μ-CHC(COOMe)CHC(COOMe)CHCH2}]+ (3) and [(RhCp*)2{η1:η4:η 2-μ-CHC(COOMe)CHC(Ph)CHCH2}]+ (4) have been prepared and characterized spectroscopically.

AB - On reinvestigation of the reaction of [(RhCp*)2(μ-CH2)2(CH 3CN)2]2+ (1) with alkynes we have found a much cleaner reaction system than the previous ones which has allowed us to elucidate the reaction mechanism of the intriguing carbon-carbon bond formation of the μ-CH2 groups and alkynes and to isolate the pure reaction product of [(RhCp*)2{η1:η4:η 2-μ-CHC(Ph)CHC(Ph)CHCH2}]+ (2). The structure of 2 as the BPh4- salt has been determined by an X-ray diffraction study. Similar dirhodium complexes [(RhCp*)2{η1:η4:η 2-μ-CHC(COOMe)CHC(COOMe)CHCH2}]+ (3) and [(RhCp*)2{η1:η4:η 2-μ-CHC(COOMe)CHC(Ph)CHCH2}]+ (4) have been prepared and characterized spectroscopically.

KW - μ-Methylene ligand

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KW - Carbon-carbon bond formation

KW - Insertion reaction

KW - Rhodium

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