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Three New Polycatenation Networks Based on 4,4′‐Oxybis(benzoate) and Bis(imidazole) Ligands: Synthesis, Structure and Photoluminescence
Author(s) -
Xu Yun,
Chen PangKuan,
Che YunXia,
Zheng JiMin
Publication year - 2010
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201000832
Subject(s) - chemistry , thermogravimetric analysis , photoluminescence , benzene , crystallography , powder diffraction , imidazole , infrared spectroscopy , catenation , single crystal , elemental analysis , stereochemistry , inorganic chemistry , organic chemistry , materials science , dna , biochemistry , optoelectronics
In this paper we report three new metal–organic frameworks (MOFs), [Zn(oba)( L1 ) 0.5 (H 2 O)] n ( 1 ), [Zn 2 (oba) 2 ( L2 ) 2 ](H 2 O) 3 ( 2 ) and [Co(oba)( L1 )] n ( 3 ) [oba = 4,4′‐oxybis(benzoate), L1 = 1,4‐bis(imidazol‐1‐ylmethyl)benzene, L2 = 1,4‐bis(imidazol‐1‐yl)benzene] that have been obtained under hydrothermal conditions and characterized by single‐crystal X‐ray diffraction, powder X‐ray diffraction (PXRD), infrared spectroscopy (IR), thermogravimetric analysis (TGA) and elemental analysis (EA). A structural investigation revealed that all three coordination compounds present polycatenation features. Interestingly, 1 shows a rare 1D → 2D structure formed by the catenation of 1D ladders. Both 2 and 3 , however, are unusual cases that have 3D frameworks constructed from 2D 4 4 ‐ sql layers by parallel polycatenation. The photoluminescence properties of 1 and 2 have also been investigated.