Structural Diversity of Lanthanum-Organic Frameworks Based on 1,4-Phenylenebis(methylene)diphosphonic Acid
authors Vilela, SMF; Mendes, RF; Silva, P; Fernandes, JA; Tome, JPC; Paz, FAA
nationality International
journal CRYSTAL GROWTH & DESIGN
keywords CRYSTAL-STRUCTURE DETERMINATION; POWDER DIFFRACTION DATA; INORGANIC 3D NETWORKS; COORDINATION POLYMERS; MICROWAVE SYNTHESIS; HYDROTHERMAL SYNTHESIS; SOLID-STATE; SOLVOTHERMAL SYNTHESIS; SELECTIVE SEPARATION; POROUS MATERIALS
abstract The preparation of five different compounds, [La-2(H(2)pmd)(3)(H2O)(12)] (1: ID), [La-2(H(2)pmd)(pmd)(H2O)(2)] (2: 3D), [La(H(3)pmd)(H(2)pmd)(H2O)] (3: 3D), [La-2(H(2)pmd)(3)(H2O)(2)] (4: 3D), and [La-2(H(2)pmd)(pmd)(H2O)(4)] (5: 3D), as crystalline materials from the reaction of 1,4-phenylenebis(methylene)diphosphonic acid (H(4)pmd) with lanthanum chloride is reported. Two different, fast, and economically viable synthetic approaches were employed with their various parameters being probed and, when possible, optimized to increase yields and purity: microwave-assisted synthesis (MWAS, in ca. 1 mm) and a bench procedure using standard ambient conditions (one-pot, ca. 10 min). Compounds 1 and 2 were isolated as phase pure crystalline materials. Compounds 3 and 4 were characterized by single-crystal X-ray diffraction from mixtures, and compound 5 was identified by powder X-ray diffraction studies (also from a physical mixture with 2). Structural details for all compounds were investigated by using in tandem X-ray diffraction (single-crystal and powder), electron microscopy (SEM and EDS), and FT-IR spectroscopy. Topological studies were also performed for all 3D networks. The conversion of compound 1 (ID) into 3D networks was investigated using hydrothermal, microwave, and one-pot methods: 1 was totally converted into phase-pure 2 via the hydrothermal method and one-pot method.
publisher AMER CHEMICAL SOC
issn 1528-7483
year published 2013
volume 13
issue 2
beginning page 543
ending page 560
digital object identifier (doi) 10.1021/cg301112k
web of science category Chemistry, Multidisciplinary; Crystallography; Materials Science, Multidisciplinary
subject category Chemistry; Crystallography; Materials Science
unique article identifier WOS:000314795300021
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journal impact factor 4.089
5 year journal impact factor 3.771
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