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Long-lived Five-Coordinate Platinum(IV) Intermediates : regiospecific C-C coupling
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Shaw, Paul Anthony, Clarkson, Guy J. and Rouke, Jonathan P. (2016) Long-lived Five-Coordinate Platinum(IV) Intermediates : regiospecific C-C coupling. Organometallics, 35 (21). pp. 3751-3762. doi:10.1021/acs.organomet.6b00697 ISSN 1520-6041.
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Official URL: http://doi.org/10.1021/acs.organomet.6b00697
Abstract
Three different phosphine derivatives of doubly cyclometallated diphenypyridine complexes of Pt(II), 1, were reacted with methyliodide to give octahedral Pt(IV) complexes, 2, as two isomers. Treatment of either isomer of complexes 2 with AgBF4, to abstract iodide, gave long-lived five-coordinate complexes 3, which could be trapped as pyridine adducts. Complexes 3 underwent a C-C coupling reaction, at a rate that depended on phosphine size, to give a methyl group attached to the original diphenylpyridine. Recylometallation was then performed and the cycle of reactions was repeated to give a diphenylpyridine doubly methylated on only one phenyl, with complete regiospecificity. NMR was used to demonstrate the geometry of all complexes in solution, with multiple Xray crystal structures confirming these assignments.
Item Type: | Journal Article | ||||||||||||
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Subjects: | Q Science > QD Chemistry | ||||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry | ||||||||||||
Library of Congress Subject Headings (LCSH): | Organometallic compounds, Hydrocarbons , Platinum, Iodides, Phosphine, Pyridine | ||||||||||||
Journal or Publication Title: | Organometallics | ||||||||||||
Publisher: | American Chemical Society | ||||||||||||
ISSN: | 1520-6041 | ||||||||||||
Official Date: | 14 November 2016 | ||||||||||||
Dates: |
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Volume: | 35 | ||||||||||||
Number: | 21 | ||||||||||||
Page Range: | pp. 3751-3762 | ||||||||||||
DOI: | 10.1021/acs.organomet.6b00697 | ||||||||||||
Status: | Peer Reviewed | ||||||||||||
Publication Status: | Published | ||||||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||||||
Date of first compliant deposit: | 25 October 2016 | ||||||||||||
Date of first compliant Open Access: | 25 October 2017 | ||||||||||||
RIOXX Funder/Project Grant: |
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