NDLI: Azide-bridged Cu(II), Mn(II) and Co(II) coordination polymers constructed with a bifunctional ligand of 6-(1H-tetrazol-5-yl)-2,2′-bipyridine

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Tsao, Jung-yu Yang, Chen-i Tsai, Jia-dong
Description	Author Affiliation: Tsao JY ( Department of Chemistry, Tunghai University, Taichung 407, Taiwan. ciyang@thu.edu.tw.); Tsai JD ( Department of Chemistry, Tunghai University, Taichung 407, Taiwan. ciyang@thu.edu.tw.); Yang CI ( Department of Chemistry, Tunghai University, Taichung 407, Taiwan. ciyang@thu.edu.tw.)
Abstract	Three new azide-bridged coordination polymers, $[M(N_{3})(tzbp)]_{n}$ (M = Cu, 1·Cu; Mn, 2·Mn; Co, 3·Co), were successfully synthesized by the introduction of a bifunctional tetrazolate/2,2′-bipyridine ligand, 6-(1H-tetrazol-5-yl)-2,2′-bipyridine (Htzbp), from the in situ [2 + 3] cycloaddition of 6-cyano-2,2′-bipyridine in the presence of an excess of sodium azide under hydrothermal conditions. Compounds 1·Cu−3·Co were characterized by X-ray crystallography, IR spectroscopy, thermogravimetry, and elemental analysis. With $tzbp^{−}$ ligands acting in the chelating coordination mode, compound 1·Cu was comprised of a single end-on $N_{3}^{−}$ $(EO-N_{3})$ bridged one-dimensional (1D) zigzag structure. Both compounds 2·Mn and 3·Co adopt two-dimensional (2D) layered structures composed of a double $EO-N_{3}$ bridged dinuclear motif, $[M_{2}(EO-N_{3})_{2}],$ which are interlinked by $tzbp^{−}$ ligands in the chelating/bridging mode. The layers of 2·Mn and 3·Co are stacked on each other in ⋯ABAB⋯ and ⋯AAAA⋯ fashions, respectively. Magnetic investigations revealed that intrachain antiferromagnetic interactions were dominant in compound 1·Cu, and both 2·Mn and 3·Co exhibited spin-canted antiferromagnetism with critical temperatures $(T_{N})$ of 3.0 and 18.4 K, respectively. Furthermore, below $T_{N},$ the field-induced magnetic transitions of spin-flop and metamagnetism were observed in 2·Mn and 3·Co, respectively.
ISSN	14779226
Issue Number	8
Journal	Dalton Trans.
Volume Number	45
e-ISSN	13645447
Language	English
Publisher	Royal Society of Chemistry
Publisher Date	2016-02-28
Publisher Place	Great Britain (UK)
Access Restriction	Subscribed
Subject Keyword	Chemistry
Content Type	Text
Resource Type	Article
Subject	Inorganic Chemistry

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