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Syntheses, Structural Characterization, and Properties of Mixed‐valent Co II Co III and Zn II Coordination Polymers from 5‐(4‐Carboxybenzylamino)isophthalic Acid
Author(s) -
Kuai HaiWei,
Cheng XiaoChun,
Feng LiangDong,
Zhu XiaoHong
Publication year - 2013
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.201300280
Subject(s) - isophthalic acid , binodal , thermogravimetric analysis , cobalt , crystallography , zinc , luminescence , infrared spectroscopy , chemistry , ligand (biochemistry) , crystal structure , single crystal , materials science , inorganic chemistry , phase (matter) , organic chemistry , polyester , biochemistry , receptor , optoelectronics , phase diagram , terephthalic acid
The reaction of cobalt(II) and zinc(II) salts with 5‐(4‐carboxybenzylamino)isophthalic acid (H 3 L) in the presence of 1,2‐bis(pyridin‐4‐yl)ethane (bpa) as auxiliary co‐ligand under hydrothermal synthetic condition led to the formation of two complexes, {[(Co II ) 0.25 (Co III ) 0.5 (HL)(H 2 O) 0.5 (bpa) 0.25 ] · 2.5H 2 O} n ( 1 ) and [Zn(HL)(bpa) 0.5 ] n ( 2 ), which were characterized by single crystal and powder X‐ray diffraction, IR spectroscopy as well as elemental and thermogravimetric analyses. Complex 1 displays uninodal 4‐connected 2D sql network with (4 4 .6 2 ) topology, complex 2 is binodal (3, 6)‐connected 2D (4.6 2 ) 2 (4 2 .6 10 .8 3 ) network. Interestingly, complex 1 shows structural features consistent with the Jahn‐Teller distortions, whereas in 2 adjacent 2D networks are interpenetrated to show 2D + 2D → 3D parallel interpenetration of slabs. Furthermore, it is noteworthy that the oxidation of Co II to Co III occurred in the preparation of 1 to give rise to a mixed‐valent cobalt coordination polymer, which can be confirmed by magnetic measurement. Magnetic property of 1 and luminescence of 2 were investigated.