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• W3181184670 endingPage "100097" @default.
• W3181184670 startingPage "100097" @default.
• W3181184670 abstract "Two rare hetero-metallic calcium(II)-zinc(II) complexes [CaZn 4 (OBz) 10 (μ 2 -hmt) 2 ] n ( 1 ) and [Ca 2 Zn 4 (OBz) 12 (μ 2 -hmt) 2 ] n ( 2 ) have been synthesized using basic zinc carbonate, benzoic acid (HOBz), hydrated calcium chloride and hexamethylenetetramine (hmt) by varying the molar ratio of the reactants. Both the complexes have been analyzed by elemental analysis, IR spectroscopy and X-ray crystallography. The complex 1 is a 1D polymer which contains one calcium ion and four zinc atoms in the asymmetric unit together with ten benzoates and two hmts. The polymer has been constructed by the alternate joining of paddle-wheel Zn 2 (OBz) 4 units and Zn 2 Ca trinuclear species by μ 2 -hmt bridging molecules connecting Zn 2+ ions. Zinc atoms have five coordinate square pyramidal geometries and four coordinate tetrahedral geometries in Zn 2 (OBz) 4 and Zn 2 Ca moieties, respectively, whereas calcium atoms have six-coordinate distorted octahedral geometry. Complex 2 is also a 1D polymer but unlike complex 1 , it contains four independent zinc and two independent calcium atoms in the asymmetric unit together with twelve benzoates and two hmts. By contrast, the polymeric structure of complex 2 has been formed by the connection of Zn 2 Ca trinuclear species via μ 2 hmt bridging molecules at Zn centers. Complex 2 is also a 1D polymer but unlike complex 1 , it contains four independent zinc and three independent calcium atoms in the asymmetric unit together with twelve benzoates and two hmts. All four zinc atoms are four coordinate with tetrahedral environments and the calcium atoms are six coordinated (two are located on a center of symmetry) exhibiting a distorted octahedral geometry. Two rare heterometallic calcium(II)-zinc(II) 1D polymers have been synthesized using basic zinc carbonate, benzoic acid, hydrated calcium chloride and hexamethylenetetramine by varying the molar ratio of the reactants. Both the polymers have been characterized by elemental analysis, IR spectroscopy and single crystal X-ray crystallography. • Hexamethylenetetramine based two new calcium(II)-zinc(II) complexes with benzoates. • Synthesized by varying the molar ratio of the reactants. • Both are 1D coordination polymer." @default.
• W3181184670 created "2021-07-19" @default.
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• W3181184670 date "2021-08-01" @default.
• W3181184670 modified "2023-10-16" @default.
• W3181184670 title "Variations of structures on changing the ratios of metal ions in rare Ca(II)–Zn(II) hetero-metallic self-assembled coordination polymers of hexamethylenetetramine and benzoate" @default.
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• W3181184670 doi "https://doi.org/10.1016/j.jics.2021.100097" @default.
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