The hydrothermal synthesis and characterization of a novel organic/inorganic hybrid compound:[WO3(2,2-bipyridine)]

• Main Authors: Hsu, Chun-Fu, 許俊富
• Other Authors: Jen Twu
• Format: Others
• Language: zh-TW
• Published: 1998
• Online Access: http://ndltd.ncl.edu.tw/handle/35120282296176550239

碩士 === 中國文化大學 === 應用化學研究所 === 86 === The hydrothermai synthesis and characterization of a novel organic/inorganichybrid compound:viz.[WO3(2,2-bipyridinee)],is presented. This compound was characteriztion by various techniques incuding Raman and IR spectroscopy, XRDand thermogravimetric analysis. Structural analyses of this compound by Ramanand IR data shows that it consists a novel tungstate structure with 2,2-bipyridineis coordinated to the tungsten atom.The X-ray powder diffraction data of thecompound is indexed to a monoclinic cell with a=14.313(4),b=9.603(2),c=7.288(2) AB=102.07(2).The structure of [WO3(2,2-bipyridine)] adopts a chain-like framework consisting of cornerishareed distorted octahedron (WO4N2) with the 2,2-bipyridineserving as a bidentate ligand whose ring fanning out from the chain.Upon thermal threatment,[WO3(2,2-bipyridine)] retains its structural integrity below 300c,followed by a gradual lossof 2,2-bipyridine which leads to formation of WO3 around 475c. The thermaldecomposition is observed to proceed through a transtional intermediate:viz.[WO4O12(2,2-bipyridine)]whose stucture is proposeed and discussed.