新型有机-金属配位聚合物{[LaNa(BTCA)(H_2O)_3]·4H_2O｝_n的合成与结构解析(英文)

A New Metal-Organic Framework of {[LaNa(BTCA)(H_2O)_3]·4H_2O｝_n:Synthesis and Crystal Structure

选择1,2,3,4-丁烷四羧酸作为柔性配体,与氯化镧进行反应,成功合成了一种新型的含有一维孔洞的有机-金属配位聚合物{[LaNa(BTCA)(H2O)3].4H2O}n(1),并通过X-ray单晶衍射仪测定晶体结构.这种配位聚合物的结构中含有三种不同大小的孔洞,但是只有最小的孔洞才可以吸附金属钠离子,另外两种大小的孔洞只能容纳自由水分子.这种特殊的结构性说明了用柔性羧酸作为配体合成金属-有机微孔结构所能形成的独特的结构特性.

A new metal-organic frameworks with one-dimensional channels, [LaNa（BTCA）（H2O）3] . 4H2O}. （ 1 ） （ H, BTCA = 1,2,3,4-butanetetracarboxylic acid）, has been synthesized and structural characterized by singlecrystal X-ray diffraction. The result indicates there are three kinds of pores in complex 1. The smallest square pores can trap sodium cations, while other two kinds of pores capture free water molecules.