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Synthesis and Magnetic Properties of Two New Cobalt Complexes Constructed by Semirigid V‐shaped 5‐(4‐Carboxyphenoxy)‐pyridine‐2‐carboxylic Acid
Author(s) -
Song JiangFeng,
Zhou RuiSha,
Zhang Jia,
Pan ChengLing
Publication year - 2012
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.201100256
Subject(s) - thermogravimetric analysis , cobalt , antiferromagnetism , pyridine , crystallography , chemistry , magnetic susceptibility , ethylene , elemental analysis , carboxylic acid , materials science , polymer chemistry , inorganic chemistry , medicinal chemistry , organic chemistry , physics , catalysis , condensed matter physics
Two cobalt complexes, [Co 3 (L) 2 (CH 3 OH) 2 (μ 3 ‐OH) 2 ] ( 1 ) and [Co(L)(bpe) 0.5 ] · H 2 O ( 2 ) [H 2 L = 5‐(4‐carboxyphenoxy)‐pyridine‐2‐carboxylic acid; bpe = 1, 2‐bis(4‐pyridyl)ethylene] were synthesized and fully characterized by elemental analyses, IR spectroscopy, single‐crystal X‐ray diffraction, thermogravimetric analysis (TGA), and magnetic analysis. Complex 1 has a two‐dimensional (2D) structure with puckered Co–O–Co chains, and 2 displays a three‐dimensional (3D) network containing one‐dimensional rectangular channels with dimensions of 9.24 × 13.84 Å. In complex 1 , variable‐temperature magnetic susceptibility measurements indicate antiferromagnetic interactions between cobalt magnetic centers.
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