无机化学学报
無機化學學報
무궤화학학보
JOURNAL OF INORGANIC CHEMISTRY
2008年
10期
1729-1732
,共4页
王燕%刘光祥%王宁%沈应中
王燕%劉光祥%王寧%瀋應中
왕연%류광상%왕저%침응중
锌配合物%吡唑羧酸%晶体结构%荧光性质
鋅配閤物%吡唑羧痠%晶體結構%熒光性質
자배합물%필서최산%정체결구%형광성질
zinc(Ⅱ) complex%pyrazole-carboxylate%crystal structure%fluorescent property
A transition metal complex Zn(mpc)2(H2O)2 (Hmpc=3-methylpyrazole-5-carboxylic acid) has been synthesized by the reaction of Hmpc with Zn(NO3)2·6H2O using hydrothermal method,which was characterized by IR spectra, elemental analysis and single-crystal X-ray structure analysis. The structure reveals that the complexcrystallizes in the trigonal space group R3c with the ZnⅡ atom on a threefold axis, composed of one ZnⅡ atom, twoindependent mpc- ligands and two coordinated water. Hydrogen bonds link the molecules into a three-dimensionalsupramolecular architecture. Fluorescent analysis in the dilute EtOH solution shows that the title complex exhibits abroad fluorescent band at 471 nm upon photoexcitation at 280 nm and has a bathochromic shift of the emissionenergy compared with the free ligand, possibly due to metal-to-ligand charge transfer (MLCT).
