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Two Lanthanide‐Organic Frameworks Derived from 1H‐Benzimidazole‐5‐Carboxylic Acid and Oxalate Mixed Ligands: Synthesis, Structure and Luminescence Property
Author(s) -
Ma Li,
Peng Guo,
Cai JinBiao,
Deng Hong
Publication year - 2011
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201100168
Subject(s) - lanthanide , thermogravimetric analysis , benzimidazole , oxalate , supramolecular chemistry , luminescence , infrared spectroscopy , chemistry , powder diffraction , hydrogen bond , metal organic framework , crystallography , inorganic chemistry , crystal structure , materials science , ion , organic chemistry , molecule , optoelectronics , adsorption
Two novel lanthanide metal coordination frameworks were synthesized by reaction of 1 H ‐benzimidazole‐5‐carboxylic acid (H 2 bic) in the presence of the coligand oxalate with lanthanide ions under hydrothermal conditions, namely, [Eu(H 2 bic)(C 2 O 4 ) 1.5 ] · H 2 O ( 1 ) and [La(H 2 bic)(C 2 O 4 ) 1.5 ] · H 2 O ( 2 ). The two compounds 1 and 2 are isomorphous and have a 2D layer architecture built up by oxalate ligands interconnecting Eu 2 O 2 clusters, which are further linked by hydrogen bonding to form a 3D supramolecular framework. The luminescence emission spectrum of compound 1 is also discussed. Both compounds were further investigated by infrared spectroscopy (IR), thermogravimetric analysis (TGA), elemental analyses (EA), and powder X‐ray diffraction (PXRD).