化学稳定的金属有机多面体的合成与结构

Synthesis and structure of chemically stable metal-organic polyhedra.

作者信息

Lu Zheng, Knobler Carolyn B, Furukawa Hiroyasu, Wang Bo, Liu Guannan, Yaghi Omar M

机构信息

Center for Reticular Chemistry, Department of Chemistry and Biochemistry, University of California-Los Angeles, 607 Charles E. Young Drive East, Los Angeles, California 90095-1569, USA.

出版信息

J Am Chem Soc. 2009 Sep 9;131(35):12532-3. doi: 10.1021/ja905101s.

DOI:10.1021/ja905101s

PMID:19689142

Abstract

Two imidazolate-metal based rhombic dodecahedra (termed MOP-100 and MOP-101) were designed and prepared from [(NH(3))(4)Pd(NO(3))(2)] and hydrogen tetrakis(1-imidazolyl)borate or hydrogen tetrakis(4-methyl-1-imidazolyl)borate in a concentrated ammonium hydroxide solution at 85 degrees C. Both rhombic dodecahedra show unusual chemical stability in acidic and basic solutions as well as common organic solvents. Permanent porosity was examined by gas adsorption studies. From the N(2) isotherm for MOP-101, the Langmuir and BET surface areas of MOP-101 were calculated to be 350 and 280 m(2) g(-1), respectively. Anion exchange experiments confirmed the internal cavities of such polyhedra are accessible.

摘要

两种基于咪唑盐的金属菱形十二面体（分别称为MOP - 100和MOP - 101）由[(NH(3))(4)Pd(NO(3))(2)]与四(1 - 咪唑基)硼酸氢盐或四(4 - 甲基 - 1 - 咪唑基)硼酸氢盐在85℃的浓氢氧化铵溶液中设计并制备而成。这两种菱形十二面体在酸性和碱性溶液以及常见有机溶剂中均表现出异常的化学稳定性。通过气体吸附研究考察了其永久孔隙率。根据MOP - 101的N(2)等温线，计算得出MOP - 101的朗缪尔比表面积和BET比表面积分别为350和280 m(2) g(-1)。阴离子交换实验证实了此类多面体的内部空腔是可进入的。