新型多金属氧酸配合物H_7[AsMo_8V_6O_(42)]·[C_2H_8N_2]·4H_2O的合成、晶体结构及性能研究  

Synthesis,Crystal Structure and Property of a Novel Polyoxometalate Complex H_7[AsMo_8V_6O_(42)]·[C_2H_8N_2]·4H_2O

作　　者：叶燕珠[1] 吴新建[1] 张贤金[1] 汪阿恋[1] 

机构地区：[1]福建教育学院理科研修部,福建福州350001

出　　处：《福建师范大学学报（自然科学版）》2017年第6期37-42,共6页Journal of Fujian Normal University：Natural Science Edition

基　　金：福建省教育厅科技资助项目(JAT170922)

摘　　要：通过水热法合成了一种结构新颖的有机-无机多金属氧酸配合物H_7[AsMo_8V_6O_(42)]·[C_2H_8N_2]·4H_2O(简记为配合物1),用IR及X-射线单晶衍射技术对其结构进行了表征,并测试了配合物(1)在苯甲醛氧化制苯甲酸中的催化活性.实验结果表明,配合物(1)的阴离子[AsMo_8V_6O_(42)]^(7-)是一种新型的以As原子为中心的双帽pseudo-Keggin结构多金属氧酸阴离子.配合物(1)在苯甲醛氧化制苯甲酸中具有较高的催化活性,当反应温度为65℃,H_2O_2用量为3.5 mL·m L^(-1)苯甲醛,催化剂用量为30 mg·mL^(-1)苯甲醛,反应历时4 h,苯甲酸的产率最高,可达73.9%.A novel polyoxometalate complex,H_7[AsMo_8V_6O_（42）]·[C_2H_8N_2]·4H_2O（ 1）was synthesized by hydrothermal method. The structure of the complex was characterized by IR and X-ray crystallography. The experimental results show that [AsMo_8V_6O_（42）]^（7-）is a novel polyoxometalate anion with As as the central atom,which has a bicapped pseudo-Keggin structure. The results show that complex 1 has good catalytic activity in the production of benzoic acid by benzaldehyde oxidation. Benzoic acid would reach the highest yield of 73. 9% when the reaction temperature reach 65 ℃,with H_2O_2 dosage of 3. 5 mL·mL^（-1） benzaldehyde and catalyst dosage of 30 mg·mL^（-1） benzaldehyde for 4 hours reaction time.

关 键 词：多金属氧酸配合物 有机-无机 晶体结构 催化活性 

分 类 号：O614[理学—无机化学]