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Syntheses, Structures, Photoluminescence, and Theoretical Studies of a Novel Class of d 10 Metal Complexes of 1 H ‐[1,10]phenanthrolin‐2‐one
Author(s) -
Zheng ShaoLiang,
Zhang JiePeng,
Chen XiaoMing,
Huang ZhenLi,
Lin ZhenYang,
Wong WingTak
Publication year - 2003
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200304855
Subject(s) - photoluminescence , ligand (biochemistry) , monomer , chemistry , crystallography , metal , bridging ligand , ketone , hydrogen bond , stereochemistry , molecule , crystal structure , materials science , polymer , organic chemistry , biochemistry , receptor , optoelectronics
A novel asymmetric monosubstituted 1,10‐phenanthroline, Hophen⋅0.5 H 2 O ( 1 , Hophen=1 H ‐[1,10]phenanthrolin‐2‐one), was generated by a facile route, and a novel class of crystalline, d 10 ‐metal, monomeric or oligomeric complexes of this ligand, namely [Hg(ophen) 2 ]⋅4 H 2 O⋅CH 2 Cl 2 ( 2 ), [Cd 3 Cl(ophen) 5 ]⋅1.5 H 2 O⋅2 CH 2 Cl 2 ( 3 ), and [Zn 4 O(ophen) 4 (OAc) 2 ]⋅4H 2 O⋅2 CH 2 Cl 2 ( 4 ), were obtained by means of liquid diffusion, and were characterized by X‐ray crystallography and photoluminescence studies. Complex 1 exhibits a hydrogen‐bonded dimeric structure, 2 is a neutral monomeric complex, 3 has a trinuclear structure with the ophen ligand acting as a bridge through the ketone groups, and 4 features a tetranuclear Zn 4 O core that is consolidated further by bridging ophen and acetate ligands. All the complexes display photoluminescent properties in the blue/green region. The photoluminescent mechanisms were investigated by means of molecular orbital calculations, which showed that the photoluminescent properties are ligand‐based and can be tuned upon ligation to different metal ions.