四核Mn(Ⅳ)配合物[L_4Mn_4O_6](ClO_4)_4·2H_2O的合成、结构及磁性研究  

Synthesis, Structure and Magnetism of Tetranuclear Mn(Ⅳ) Complex [L_4Mn_4O_6](ClO_4)_4.2H_2O

作　　者：王庆伦[1] 李春晖[1] 程鹏[1] 阎世平[2] 廖代正[1] 姜宗慧[1] 

机构地区：[1]南开大学化学系,天津300071 [2]北京大学稀土材料化学及应用国家重点实验室,北京100871

出　　处：《高等学校化学学报》2001年第10期1632-1633,共2页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金 (批准号 :2 97710 2 1)资助

摘　　要：A tetranuclear Mn(Ⅳ) complex \{\[L\-4Mn\-4O\-6\]\}(ClO\-4)\-4\52H\-2O (L=tacn)was synthesized from Mn(CH\-3COO)\-2\54H\-2O, tacn and NaClO\-4 and characterized by XRD. The compound crystallizes in monoclinic system, space group P2\-1/n , with a =2.133 5(6) nm, b =1.138 7(3) nm, \{ c =\}\{2.178 8(6) nm\}, β =67.40(3)°, V =4.928(2) nm 3 , Z =4, R =0.062 0. Magnetic investigations reveal a weak ferromagnetic property with J =8.8 cm -1 .A tetranuclear Mn(Ⅳ) complex \{\[L\-4Mn\-4O\-6\]\}(ClO\-4)\-4\52H\-2O (L=tacn)was synthesized from Mn(CH\-3COO)\-2\54H\-2O, tacn and NaClO\-4 and characterized by XRD. The compound crystallizes in monoclinic system, space group P2\-1/n , with a =2.133 5(6) nm, b =1.138 7(3) nm, \{ c =\}\{2.178 8(6) nm\}, β =67.40(3)°, V =4.928(2) nm 3 , Z =4, R =0.062 0. Magnetic investigations reveal a weak ferromagnetic property with J =8.8 cm -1 .

关 键 词：四核Mn(Ⅳ)配合物 大环配体 晶体结构 铁磁偶合 磁性 合成 四核锰(Ⅳ)配合物 

分 类 号：O614.711[理学—无机化学] O482.5[理学—化学]