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Systhesis, crystal structure, and thermal property of piperazine-templated copper(Ⅱ) sulrate,{H2NCH2CH2NH2CH2CH2} {Cu(H2O)6}(SO4)2
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2005, v.18 no.5, pp.381-385
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(2005). Systhesis, crystal structure, and thermal property of piperazine-templated copper(Ⅱ) sulrate,{H2NCH2CH2NH2CH2CH2} {Cu(H2O)6}(SO4)2. Analytical Science and Technology, 18(5), 381-385.
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Abstract
The title compound,{H2NCH2CH2NH2CH2CH2 }{Cu(H2O)6}(SO4)2, I, has been synthesized under solvo/hydrothermal conditions and their crystal structure analyzed by X-ray single crystallography. Compound I crystallizes in the monoclinic system, P21/n space group with a = 6.852(1), b = 10.160(2), c = 11.893(1) Å, β = 92.928(8)o, V = 826.9(2)Å3, Z = 2, Dx = 1.815 g/cm3, R1 = 0.031 and ωR2 = 0.084. The crystal structure of the piperazine templated Cu(II)-sulfate demonstrate zero-dimensional compound constituted by doubly protonated piperazine cations, hexahydrated copper cations and sulfate anions. The central Cu atom has a elongated octahedral coordination geometry. The crystal structure is stabilized by three-dimensional networks of the intermolecular Owater-H…Osulfate and Npip-H…Osulfate hydrogen bonds between the water molecules and sulfate anions and protonated piperazine cations. Based on the results of thermal analysis, the thermal decomposition reaction of compound I was analyzed to have three distinctive stages.
- keywords
- Copper sulfate, piperazine, solvo/hydrothermal synthesis, crystal structure, thermal property
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