摘要
在相同的水热条件下,铜盐、钴盐分别和配体H_2PPCA(H_2PPCA=5-pyrazin-2-yl-1H-pyrazole-3-carboxylic acid)发生反应,生成了2个结构截然不同的金属有机配合物,分别是[Cu(PPCA)(H_2O)]·H_2O(HPU-7)和{[Co(PPCA)(H_2O)]·H_2O}n(HPU-8)。HPU-7是由CuCl_2·2H_2O与配体在160℃下反应而成的,它呈现出零维的双核铜单元结构。HPU-8是由Co(NO_3)_2·6H_2O与配体在160℃下反应生成的,它呈现出由双核钴单元与配体的骨架相连而成的4,4-连接的二维层结构。中心金属离子的改变导致了不同结构MOF的形成,并且它们的电化学性能研究表明它们是很好的半导体材料,它们都对亚甲基蓝(MB)具有较好的光催化效果。
By Reactions of Cu(Ⅱ), Co(Ⅱ) with H2PPCA ligand (H2PPCA=5-pyrazin-2-yl-lH-pyrazole-3-carboxylic acid) in the same hydrothermal conditions resulted in two distinct structural metal-organic frameworks (MOFs), namely, [Cu (PPCA)(H20)] ·H2O (HPU-7) and {[Co (PPCA)(H20)] "HEO}, (HPU-8). HPU-7 that obtained from CuC12"2H20 at 160 ℃ is a dinuelear cluster based on Cu(℃) ions and PPCA2- ligands. HPU-8 synthesized by Co(NO3)2· 6H2O at 160 ℃ exhibits a 4,4-connected 2D layer connected by dinuelear Co(H) clusters and the skeletons of the PPCA2- ligands. The structural differences are dependent on the coordination geometries of central metal ions. And due to the structural differences, the two complexes display different photodegradation efficiencies toward methylene blue (MB). CCDC: 1575337, I-IPU-7; 1575338, HPU-8.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2018年第3期560-568,共9页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金(No.21601050)资助
关键词
双核簇
2D层
结构变化
光催化
dinuclear cluster
2D layer
structural differences
photodegradation efficiency