Structure and Magnetic Properties of a New Oxohalogenide Compound Ba_7CoV_6O_(21)Cl_4  

作　　者：王楠楠 何长振 崔美艳 郭文彬 张素允 杨明 汤莹莹 

机构地区：[1]College of Materials Science and Engineering,Fuzhou University [2]State Key Laboratory of Structural Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences

出　　处：《Chinese Journal of Structural Chemistry》2015年第9期1357-1361,共5页结构化学（英文）

基　　金：supported by the MOST projects,the National Basic Research Program of China(No.2012CB921701);National Natural Science Foundation of China(No.21403234)

摘　　要：A new oxohalogenide compound BaTCoV6021C14 was synthesized by a conven- tional high-temperature solid state reaction. The title compound is found to crystallize in the orthorhombic system of space group Cmcm with a = 16.726（4）, b = 10.568（3）, c = 14.808（4） A, V = 2617.4（12） A3, Z= 2, Mr = 1803.68, Dc= 3.411 g/cm3,/t= 11.396 mm1, F（000） = 3172, the final R = 0.0314 and wR = 0.0750 for 1531 observed reflections with I 〉 2δ（/）. Co2＋ ions are coordinated by four O and two Cl atoms, forming a COO4C12 octahedron, while V atoms are tetrahedrally coordinated, forming （V207）4＂ groups. The structure of Ba7CoV6021Ch exhibits a pseudo-one- dimensional chain running along the c-axis. Magnetic measurements confirm that Ba7CoV6021Cl4 shows a paramagnetic behavior down to 2 K.A new oxohalogenide compound BaTCoV6021C14 was synthesized by a conven- tional high-temperature solid state reaction. The title compound is found to crystallize in the orthorhombic system of space group Cmcm with a = 16.726（4）, b = 10.568（3）, c = 14.808（4） A, V = 2617.4（12） A3, Z= 2, Mr = 1803.68, Dc= 3.411 g/cm3,/t= 11.396 mm1, F（000） = 3172, the final R = 0.0314 and wR = 0.0750 for 1531 observed reflections with I 〉 2δ（/）. Co2＋ ions are coordinated by four O and two Cl atoms, forming a COO4C12 octahedron, while V atoms are tetrahedrally coordinated, forming （V207）4＂ groups. The structure of Ba7CoV6021Ch exhibits a pseudo-one- dimensional chain running along the c-axis. Magnetic measurements confirm that Ba7CoV6021Cl4 shows a paramagnetic behavior down to 2 K.

关 键 词：oxohalogenide crystal structure solid-state reaction MAGNETISM 

分 类 号：O641[理学—物理化学]