Microstructured hydroxyl environments and Raman spectroscopy in selected basic transition-metal halides

作     者：刘晓东 孟冬冬 萩原雅人 郑旭光 

作者机构：Department of PhysicsGraduate School of Science and EngineeringSaga University Department of PhysicsCollege of ScienceTianjin Polytechnic University Department of PhysicsFaculty of Science and EngineeringSaga University 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2011年第20卷第8期

页      面：435-442页

核心收录：

学科分类：07[理学] 070303[理学-有机化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0704[理学-天文学] 

基　　金：Project supported by the Grant-in-Aid for Scientific Research on Priority Area from the Ministry of Education Culture Sports Science and Technology Japan (Grant No. Tokutei 22014008) 

主　　题：hydroxyl trimeric hydrogen bond Raman spectrum basic transition-metal halide 

摘      要：Raman vibrational spectra of the selected basic （hydroxyl OH and deuteroxyl OD） transition-metal halides, geomet- rically frustrated material series α-, β-, γ-Cu2（OH）3Cl, α-Cu2（OH）3Br, β-Ni2（OH）3Cl, β-Co2（OH）3Cl, β-Co2（OH）3Br, γ-Cu2（OD）3Cl, and β-Co2（OD）3Cl are measured at room temperature and analysed to investigate the relationship be- tween the microstructured OH environments and their respective Raman spectra. Among these selected samples, the last two are used to determine the OH stretching vibration region （3600 cm-1-3300 cm-1） and OH bending vibra- tion region （1000 cm-1-600 cm-1） of OH systems in the spectra. Through the comparative analysis of the distances d（metal-O）, d（O-halogen）, and d（OH）, the strong metal-O interaction and trimeric hydrogen bond （Car, C8 or C1 symmetry） are found in every material, but both determine simultaneously an ultimate d（OH）, and therefore an OH stretching vibration frequency. According to the approximately linear relationship between the OH stretching vibration frequency and d（OH）, some unavailable d（OH） are guessed and some doubtful d（OH） are suggested to be corrected. In addition, it is demonstrated in brief that the OH bending vibration frequency is also of importance to check the more detailed crystal microstructure relating to the OH group.