Poly[bis(μ4‐benzene‐1,2‐dicarboxylato)di‐μ3‐isonicotinato‐dilanthanum(III)]

• Published in: Acta crystallographica. Section C, Crystal structure communications Vol. 65; no. 12; pp. m469 - m471
• Main Authors: Wang, Guo‐Ming, Xue, Shu‐Yun, Li, Hui, Liu, Hui‐Luan
• Format: Journal Article
• Language: English
• Published: 5 Abbey Square, Chester, Cheshire CH1 2HU, England International Union of Crystallography 01.12.2009
• ISSN: 0108-2701; 1600-5759
• DOI: 10.1107/S0108270109043856

In the title compound, [La2(C8H4O4)2(C6H4NO2)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 (BDC2−) 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.