Poly[bis(mu4-benzene-1,2-dicarboxylato)di-mu3-isonicotinato-dilanthanum(III)].
In the title compound, [La(2)(C(8)H(4)O(4))(2)(C(6)H(4)NO(2))(2)](n), there are two crystallographically independent La centres, both nine-coordinated in tricapped trigonal prismatic coordination geometries by eight carboxylate O atoms and one pyridyl N atom. The La centres are linked by the carboxylate groups of isonicotinate (IN(-)) and benzene-1,2-dicarboxylate (BDC(2-)) ligands to form La-carboxylate chains, which are further expanded into a three-dimensional framework with nanometre-sized channels by La-N bonds. In the construction of the resultant architecture, in tricapped trigonal prismatic coordination geometries by eight carboxylate O atoms and one pyridyl N atom, while the BDC ligands link to four different cations each, displaying penta- and heptadentate chelating-bridging modes, respectively.
Wang
Guo-Ming
GM
Department of Chemistry, Teachers College of Qingdao University, Qingdao, Shandong 266071, People's Republic of China. gmwang_pub@163.com
Xue
Shu-Yun
SY
Li
Hui
H
Liu
Hui-Luan
HL