Syntheses, Structures, Photoluminescence, and Theoretical Studies of a Novel Class of d10 Metal Complexes of 1H-[1,10]phenanthrolin-2-one

✍ Scribed by Shao-Liang Zheng; Jie-Peng Zhang; Xiao-Ming Chen; Zhen-Li Huang; Zhen-Yang Lin; Wing-Tak Wong

• Publisher: John Wiley and Sons
• Year: 2003
• Tongue: English
• Weight: 341 KB
• Volume: 9
• Category: Article
• ISSN: 0947-6539
• DOI: 10.1002/chem.200304855

✦ Synopsis

Abstract

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.