Layered Metal-Organic Frameworks Based on Octahedral Lanthanides and a Phosphonate Linker: Control of Crystal Size
authors Paz, FAA; Vilela, SMF; Tome, JPC
nationality International
journal CRYSTAL GROWTH & DESIGN
keywords COORDINATION POLYMERS; MAGNETIC-PROPERTIES; OXALIC-ACID; CAPTURE; CONTRACTION; COMPLEXES; LUMINESCENCE; TOPOLOGIES; LIGANDS; STORAGE
abstract The hydrothermal reaction between lanthanide salts and residues of (benzene-1,3,5-triyltris(methylene))triphosphonic acid (H(6)bmt) promotes the formation of a new series of isotypical layered lanthanideorganic frameworks (LnOFs), [Ln(2)(H(3)bmt)(2)]center dot H2O [where Ln(3+) = Eu3+ (1), Gd3+ (2), Tb3+ (3), Dy3+ (4), Ho3+ (5), Er3+ (6), Tm3+ (7), and Yb3+ (8)]. The crystal structure was unveiled from powder X-ray diffraction data (both laboratory and synchrotron) in tandem with other characterization techniques (namely thermogravimetry, thermodiffractometry, vibrational spectroscopy, and elemental analysis). It is shown that the lanthanide contraction leads, on average, to a reduction of the average crystallite size, up to the nanometer scale in the case of compound 8. The unique structural features of the (2)(infinity)[Ln(2)(H(3)bmt)(2)] layers are discussed in detail, in particular, the six-coordination environment of the lanthanide cations and its topological relationship with the formation of the first 5,5L4 binodal network based on chelating phosphonate groups.
publisher AMER CHEMICAL SOC
issn 1528-7483
year published 2014
volume 14
issue 10
beginning page 4873
ending page 4877
digital object identifier (doi) 10.1021/cg500875m
web of science category Chemistry, Multidisciplinary; Crystallography; Materials Science, Multidisciplinary
subject category Chemistry; Crystallography; Materials Science
unique article identifier WOS:000342609300001
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journal impact factor 3.972
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