The first suberate lanthanum(III) complex without uncoordinated water

• Published in: Acta crystallographica. Section C, Crystal structure communications Vol. 60; no. 8; pp. m407 - m409
• Main Authors: Benmerad, Belkacem, Guehria-Laïdoudi, Achoura, Dahaoui, Slimane, Lecomte, Claude
• Format: Journal Article
• Language: English
• Published: 5 Abbey Square, Chester, Cheshire CH1 2HU, England Munksgaard International Publishers 01.08.2004; Blackwell
• Subjects: Condensed matter: structure, mechanical and thermal properties; Crystalline state (including molecular motions in solids); Exact sciences and technology; Physics; Structure of solids and liquids; crystallography; Structure of specific crystalline solids; Theory of crystal structure, crystal symmetry; calculations and modeling; Coordination; Hydrogen; Long chain; Crystallization; Rare earth complexes; Carbon; Crystal symmetry; Unit cell; Lamellar structure; Hydrogen bonds; Ligands; Lanthanum complexes; Conformation; Crystal structure
• ISSN: 0108-2701; 1600-5759
• DOI: 10.1107/S0108270104014751

catena‐Poly­[[aqua­lanthanum(III)]‐μ‐(8‐carboxy­octanoato)‐μ‐octanedioato], [La(C8H12O4)(C8H13O4)(H2O)]n, is, to our knowledge, the first reported rare‐earth complex containing a flexible long‐chain ligand that crystallizes without water of crystallization. The layered polymeric structure is built from infinite chains of one‐edge‐sharing LaO8(H2O) polyhedra, connected through the carbon backbone chains of the ligands. The two chemically different ligands act in the same coordination modes, exhibiting chelating bonds and μ‐1,1‐bridging monodentate linkage, and adopting the same extended conformation. In the relatively limited hydrogen‐bonding network, a very strong hydrogen bond between the deprotonated and protonated ligand ends stabilizes the framework.