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Title: Unexpected C-C Bond Cleavage and C-C Bond Formation Observed inthe Reaction of a Cationic Iridium Complex with Heteratom-SubstitutedCyclopropanes

Abstract

No abstract prepared.

Authors:
; ; ;
Publication Date:
Research Org.:
Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US)
Sponsoring Org.:
USDOE Director. Office of Science. Basic EnergySciences
OSTI Identifier:
922720
Report Number(s):
LBNL-62064
Journal ID: ISSN 0002-7863; JACSAT; R&D Project: 402101; BnR: KC0302010; TRN: US200803%%529
DOE Contract Number:
DE-AC02-05CH11231
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of the American Chemical Society; Journal Volume: 129; Related Information: Journal Publication Date: 2007
Country of Publication:
United States
Language:
English
Subject:
37; CLEAVAGE; IRIDIUM; CHEMISTRY

Citation Formats

Anstey, Mitchell R., Yung, Cathleen M., Du, Juana, and Bergman,Robert G.. Unexpected C-C Bond Cleavage and C-C Bond Formation Observed inthe Reaction of a Cationic Iridium Complex with Heteratom-SubstitutedCyclopropanes. United States: N. p., 2006. Web.
Anstey, Mitchell R., Yung, Cathleen M., Du, Juana, & Bergman,Robert G.. Unexpected C-C Bond Cleavage and C-C Bond Formation Observed inthe Reaction of a Cationic Iridium Complex with Heteratom-SubstitutedCyclopropanes. United States.
Anstey, Mitchell R., Yung, Cathleen M., Du, Juana, and Bergman,Robert G.. Wed . "Unexpected C-C Bond Cleavage and C-C Bond Formation Observed inthe Reaction of a Cationic Iridium Complex with Heteratom-SubstitutedCyclopropanes". United States. doi:.
@article{osti_922720,
title = {Unexpected C-C Bond Cleavage and C-C Bond Formation Observed inthe Reaction of a Cationic Iridium Complex with Heteratom-SubstitutedCyclopropanes},
author = {Anstey, Mitchell R. and Yung, Cathleen M. and Du, Juana and Bergman,Robert G.},
abstractNote = {No abstract prepared.},
doi = {},
journal = {Journal of the American Chemical Society},
number = ,
volume = 129,
place = {United States},
year = {Wed Dec 27 00:00:00 EST 2006},
month = {Wed Dec 27 00:00:00 EST 2006}
}
  • A simple mononuclear octahedral copper(II) complex was attempted from the reaction of three moles of 1-benzoyl-3-(pyridin-2-yl)-1H-pyrazole and one mole of copper(II) perchlorate hexahydrate in methanol. However, the product of the reaction was confirmed to be a dinuclear copper(II) complex with μ-(3-(pyridin-2-yl)-pyrazolato) and 3-(pyridin-2-yl)-1H-pyrazole ligands attached to each of the Cu(II) centre atom. The copper(II) ion assisted the cleavage of the C{sub benzoyl}N bond afforded a 3-(pyridin-2-yl)-1H-pyrazole molecule. Deprotonation of the 3-(pyridin-2-yl)-1H-pyrazole gave a 3-(pyridin-2-yl)-pyrazolato, which subsequently reacted with the Cu(II) ion to give the (3-(pyridin-2-yl)-pyrazolato)(3-(pyridin-2-yl)-1H-pyrazole)Cu(II) product moiety. The structure of the dinuclear complex was confirmed by x-ray crystallography. The complexmore » crystallized in a monoclinic crystal system with P2(1)/n space group and cell dimensions of a = 12.2029(8) Å, b = 11.4010(7) Å, c = 14.4052(9) Å and β = 102.414(2)°. The compound was further characterized by mass spectrometry, CHN elemental analysis, infrared and UV-visible spectroscopy and the results concurred with the x-ray structure. The presence of d-d transition at 671 nm (ε = 116 dm{sup 3} mol{sup −1} cm{sup −1}) supports the presence of Cu(II) centres.« less
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