Pt(II) mono-carbonyl complexes of a cyclometallating 2-(2'-thienyl)-(pyridinato-C,3N') ligand: nature and dynamics of the lowest excited state of the chloro- and thiolato-complexes.
The synthesis of a cyclometallated Pt(II) thiolate carbonyl complex Pt(thpy)(CO)(mts), (thpy = 2-(2'-thienyl)-pyridinate, mts = methylthiosalicylate) is reported. A combination of emission and time-resolved infrared (TRIR) techniques revealed for both Pt(thpy)(CO)(mts) and its chloride analogue Pt(thpy)(CO)Cl the predominant intra 2-(2'-thienyl)-pyridinate 3pi pi* character of the lowest electronic excited state. The unusually short lifetime (780 ps) of the intraligand 3pi pi* lowest excited state of Pt(thpy)(CO)(mts) indicates that this electronic state is influenced by another close-lying excited state, probably charge-transfer in origin.
Kovelenov
Yurii A
YA
School of Chemistry, University of Nottingham, Nottingham, UK NG7 2RD.
Blake
Alexander J
AJ
George
Michael W
MW
Matousek
Pavel
P
Mel'nikov
Mikhail Ya
MY
Parker
Anthony W
AW
Sun
Xue-Zhong
XZ
Towrie
Michael
M
Weinstein
Julia A
JA