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Cyclometalated Complexes of Platinum(II) with 2‐Vinylpyridine
Author(s) -
Zucca Antonio,
Maidich Luca,
Carta Veronica,
Petretto Giacomo L.,
Stoccoro Sergio,
Agostina Cinellu Maria,
Pilo Maria I.,
Clarkson Guy J.
Publication year - 2014
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201400052
Subject(s) - chemistry , platinum , ring (chemistry) , medicinal chemistry , stereochemistry , crystallography , organic chemistry , catalysis
The electron‐rich platinum(II) derivatives [Pt(R) 2 (DMSO) 2 ] (R = Me, Ph) react with 2‐vinylpyridine (L) to give the cyclometalated complexes [Pt(L–H)(R)(DMSO)] through C–H bond activation. Cyclometalation also occurs with [Pt(Me)(Cl)(DMSO) 2 ]. From the starting compounds, a series of cyclometalated complexes was obtained and characterised by analytical and spectroscopic methods. The molecular structures of [Pt(L–H)(Me)(PPh 3 )] and [Pt(L–H)(Ph)(PCy 3 )] were solved by X‐ray diffraction analysis, and the results unambiguously demonstrate cyclometalation of 2‐vinylpyridine. The five‐membered cyclometalated ring is particularly stable, likely due to partial electronic delocalisation.