TY - JOUR
T1 - Luminescent rhenium(I) phenanthroline complexes with a benzoxazol-2-ylidene ligand
T2 - Synthesis, characterization, and photophysical study
AU - Ko, Chi-Chiu
AU - Ng, Chi-On
AU - Yiu, Shek-Man
PY - 2012/10/22
Y1 - 2012/10/22
N2 - A series of luminescent rhenium(I) phenanthroline complexes containing benzoxazol-2-ylidene ligands with the general formula {Re(CO) 3(phen)[CN(X)C 6H 4-2-O]} + and cis,trans-{Re(CO) 2(phen)(L)[CN(H)C 6H 4-2-O]} + (X = H, methyl; phen = 1,10-phenanthroline; L = PPh 3, PPh 2Me, P(OEt) 3) have been synthesized and characterized. The X-ray crystal structures of most of the carbene complexes and some of their synthetic precursors have also been determined. A new synthetic methodology for the preparation of dicarbonyl rhenium diimine synthetic precursors with a labile acetonitrile ligand, [Re(CO) 2(phen)(PR 3)(MeCN)] +, was developed. Photophysical study shows that these carbene complexes display a green to red 3MLLCT [dπ(Re) → π*(N-N)] phosphorescence at room temperature. The N-deprotonations of the benzoxazol-2-ylidene ligand in these complexes were investigated. © 2012 American Chemical Society.
AB - A series of luminescent rhenium(I) phenanthroline complexes containing benzoxazol-2-ylidene ligands with the general formula {Re(CO) 3(phen)[CN(X)C 6H 4-2-O]} + and cis,trans-{Re(CO) 2(phen)(L)[CN(H)C 6H 4-2-O]} + (X = H, methyl; phen = 1,10-phenanthroline; L = PPh 3, PPh 2Me, P(OEt) 3) have been synthesized and characterized. The X-ray crystal structures of most of the carbene complexes and some of their synthetic precursors have also been determined. A new synthetic methodology for the preparation of dicarbonyl rhenium diimine synthetic precursors with a labile acetonitrile ligand, [Re(CO) 2(phen)(PR 3)(MeCN)] +, was developed. Photophysical study shows that these carbene complexes display a green to red 3MLLCT [dπ(Re) → π*(N-N)] phosphorescence at room temperature. The N-deprotonations of the benzoxazol-2-ylidene ligand in these complexes were investigated. © 2012 American Chemical Society.
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U2 - 10.1021/om300526e
DO - 10.1021/om300526e
M3 - RGC 21 - Publication in refereed journal
SN - 0276-7333
VL - 31
SP - 7074
EP - 7084
JO - Organometallics
JF - Organometallics
IS - 20
ER -