Acta Crystallographica Section E: Crystallographic Communications | |
Hydrothermal synthesis and crystal structure of a new lanthanum(III) coordination polymer with fumaric acid | |
Boudaren, C.1  Trifa, C.3  Merazig, H.6  Anana, H.6  Bouacida, S.7  | |
[1] Constantine 1, 25000 , Algeria;Larbi Ben M'hidi, Oum El Bouaghi, Algeria;de Recherche de Chimie de l'Environnement et Molédes Sciences Exactes et Sciences de la Nature et de la Vie, UniversitéDéUnitéculaire Structurale, CHEMS, Universitépartement Sciences de la Matière, Faculté | |
关键词: CRYSTAL STRUCTURE; HYDROTHERMAL SYNTHESIS; LANTHANUM(III) COORDINATION POLYMER; FUMARIC ACID; | |
DOI : 10.1107/S2056989015007008 | |
学科分类:数学(综合) | |
来源: International Union of Crystallography | |
【 摘 要 】
The title compound, poly[diaquatris(μ4-but-2-enedioato)(μ2-but-2-enedioic acid)dilanthanum(III)], [La2(C4H2O4)3(C4H4O4)(H2O)2]n, was synthesized by the reaction of lanthanum chloride pentahydrate with fumaric acid under hydrothermal conditions. The asymmetric unit comprises an LaIII cation, one and a half fumarate dianions (L2−), one a half-molecule of fumaric acid (H2L) and one coordinated water molecule. Each LaIII cation has the same nine-coordinate environment and is surrounded by eight O atoms from seven distinct fumarate moieties, including one protonated fumarate unit and one water molecule in a distorted tricapped trigonal–prismatic environment. The LaO8(H2O) polyhedra centres are edge-shared through three carboxylate bridges of the fumarate ligand, forming chains in three dimensions to construct the MOF. The crystal structure is stabilized by O—H⋯O hydrogen-bond interactions between the coordinated water molecule and the carboxylate O atoms, and also between oxygen atoms of fumaric acid.
【 授权许可】
CC BY
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