Syntheses and structures of the MOF-type series of metal 1,4,5,8,-naphthalenetetracarboxylates M2(OH)2[C14O8H4] (Al, Ga, In) with infinite trans
详细信息 查看全文
- 作者：Christophe Volkringer ; Thierry Loiseau ; Nathalie Guillou ; Gé ; rard Fé ; rey ; Erik Elkaï ; m
- 关键词：Hydrothermal synthesis ; Metal– ; organic framework ; 1 ; 4 ; 5 ; 8-Naphthalenedicarboxylic acid ; Aluminum ; Gallium ; Indium ; X-ray powder diffraction ; Synchrotron radiation
- 刊名：Solid State Sciences
- 出版年：2009
- 出版时间：August 2009
- 年：2009
- 卷：11
- 期：8
- 页码：1507-1512
- 全文大小：839 K
文摘
Three new isostructural MOF-type compounds (named MIL-122) have been obtained from the hydrothermal reaction at 210 °C for 24 h of the 1,4,5,8-naphthalenetetracarboxylic acid with aluminum, gallium or indium source in water. The structures of the compounds M2(OH)2[C14H4O8] (M = Al, Ga, In) have been solved ab initio from powder X-ray diffraction analysis using the synchrotron radiation (Soleil; station CRISTAL). The three-dimensional organic–inorganic framework exhibits infinite straight chains of metal-centered octahedra sharing trans corners linked to each other through the 1,4,5,8-naphthalenetetracarboxylate ligand. The cations Al, Ga or In, are coordinated by four oxygen atoms coming from the carboxyl groups and two bridging hydroxyl groups μ2-OH, located in trans position in the octahedral surrounding. The compounds characterized by thermogravimetric and thermodiffraction analyses are thermally stable up to 440, 460 and 380 °C, for Al, Ga and In, respectively. Crystal data: monoclinic cell; P21/c (n°14); for MIL-122 (Al): a = 9.5174(2), b = 10.0706(1), c = 6.6465(2) Å, β = 91.2614(5)°, V = 636.878(2) Å3, Z = 2; for MIL-122 (Ga): a = 9.6501(1), b = 10.0585(1), c = 6.75069(9) Å, β = 92.4786(9)°, V = 654.65(1) Å3, Z = 2; for MIL-122 (In): a = 9.92359(5), b = 10.19765(7), c = 7.19357(4) Å, β = 727.034(8)°, V = 727.034(8)Å3, Z = 2.