Synthesis　and　Crystal　Structure　of［Na（DB18C6）（H_2O）_2］_2Mo_6O_（19）·3DMF·2CH_3OH

作     者：Lu Xiao-Ming Zhao Ya-Ping Qu Er-Ling Xiao Ling-Mei Liu Shun-Cheng(Department of Chemistry, Capital Normal University, Beijing, 100037)Jin Xiang-Lin(Institute of Physical Chemistry, Beijing Uniuersity, Beijing, 100871) 

作者机构：Department of Chemistry Capital Normal University Beijing 100037 Institute of Physical Chemistry Beijing University Beijing 100871 

出 版 物：《Chinese Journal of Structural Chemistry》 (结构化学（英文）)

年 卷 期：1996年第15卷第4期

页      面：293-296页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0817[工学-化学工程与技术] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 070301[理学-无机化学] 0702[理学-物理学] 

主　　题：hexamolybdate anion crown ether complex crystal structure 

摘      要：The title complex [Na (DB_18C_6) (H_2O)_2]_2Mo_6O_19·3DMF · 2CH_3OH (Ⅰ) , a new type of crown hexamolybdate supermolecule, has been synthesized. Its crystal structure has been determined by X-ray diffraction analysis. The crystal C_49H_32 Mo_6N_2Na_2O_40 is tetragonal, space group P4/mbm, a= 17.108(2), c= 28. 285 (6) A ,V=8279(2) A￣ 3, Z=4 , M_r= 1960. 8 , D_x=1. 573 g/cm￣3 , P=9. 51cm￣(-1). F(000)=3936. The final agreement factors R=0. 058 and R_w= 0. 062 for 1777 independent reflections with F4σ(F). In contrast to what we have reported about [Na(DB_18C_6)(CH_3OH)]_2Mo_6O_19(Ⅱ) where the whole complex was linked together, the cation [Na (DB_18C_6 ) (H_2O)_2]￣ + , that has crystallographic D_2h symmetry, combines with the anion with the symmetry O_h by electronic interaction.