Premium
Synthesis, Crystal Structure, and Photoluminescent Properties of a Tetracarbonyl(naphthyridylcarbamoyl)rhenium( I ) Complex and a Highly Emissive Tetracarbonyl(naphthyridylamido)rhenium( I ) Complex
Author(s) -
Zuo JingLin,
Fu WenFu,
Che ChiMing,
Cheung KungKai
Publication year - 2003
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.200390034
Subject(s) - rhenium , chemistry , amine gas treating , photoluminescence , crystal structure , solvent , yield (engineering) , quantum yield , crystallography , medicinal chemistry , stereochemistry , inorganic chemistry , organic chemistry , fluorescence , physics , materials science , quantum mechanics , optics , metallurgy
The reactions of Re(CO) 5 X (X = Cl, Br) with 7‐amino‐2,4‐dimethyl‐1,8‐naphthyridine (H 2 L 1 ) and 7‐[2‐(6‐chloropyridyl)amino]‐2,4‐dimethyl‐1,8‐naphthyridine (HL 2 ) in the presence of t BuOK afforded the η 1 ‐naphthyridylcarbamoyl complex [Re(CO) 4 (HL 1 CO)] ( 1 ) and the naphthyridylamido complex [Re(CO) 4 (L 2 )] ( 2 ), respectively. The structures of HL 2 , 1· CHCl 3 , 1· HL 3 ·2CH 2 Cl 2 [HL 3 = (7‐chloronaphthyridyl)(5,7‐dimethylnaphthyridyl)amine], and 2 have been determined by X‐ray crystallography. Complex 1 displays a weak emission at 453 nm in an EtOH/MeOH (1:4, v/v) glassy solution at 77 K; complex 2 exhibits an intense (quantum yield: 0.22 in CH 2 Cl 2 ) and long‐lived emission (46 μs in CH 2 Cl 2 ), with a solvent‐sensitive λ max , in degassed solutions at room temperature. (© Wiley‐VCH Verlag GmbH, 69451 Weinheim, Germany, 2003)