Two new cobalt(II) coordination polymers based on 4′-(2-carboxyphenyl)-4,2′:6′,4″-terpyridine: Syntheses, structures and magnetic properties

Add time:08/12/2019    Source:sciencedirect.com

Two new three-dimensional cobalt(II) coordination polymers [Co2(cptpy)2(ox)]n (1) and [Co3(cptpy)2(suc)2(H2O)]n (2) (Hcptpy = 4′-(2-carboxyphenyl)-4,2′:6′,4″-terpyridine, H2ox = oxalic acid, H2suc = succinic acid) have been synthesized under hydrothermal conditions and characterized by elemental analysis, IR spectroscopy and single crystal X-ray diffraction. Compound 1 shows a 2-nodal (3,8)-connected tfz-d net with the Point symbol of (43)2(46·618·84). Compound 2 is a 2-nodal (3,6)-connected 3D rtl-net built up by linear Co3(COO)6 trinuclear cluster with the Point symbol of (4·62)2(42·610·83). Magnetic studies reveal that compounds 1 and 2 both exhibit antiferromagnetic behavior.

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