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A new nickel citrate compound Ni(H2cit)(phen)(H2O).3H2O(H4cit = citrate acid,phen = 1,10-phenanthroline) has been synthesized and characterized by single-crystal X-ray diffraction.It crystallizes in the trigonal system,space group P31 with a = 13.8319(13),c = 10.425(2),V = 1727.3(4)3,Dc = 1.445 g/cm3,Mr = 501.09,F(000) = 780,μ = 0.901 mm-1,Z = 3,R = 0.0760 and wR = 0.1730 for 3859 observed reflections(I > 2σ(I)).In this compound,Ni2+ cation is chelated by a phen molecule,one H2cit2-anion and one H2O molecule.The citric acid coordinates to the Ni2+ center through three functional groups:α-hydroxyl,α-carboxylate and β-carboxylate while another α-carboxylate forms hydrogen bond with surrounding H2O molecule.And the citric acid is doubly protonated.The temperature-dependent magnetic susceptibility data revealed that the compound is a paramagnetic material.
A new nickel citrate compound Ni (H2cit) (phen) (H2O) .3H2O (H4cit = citrate acid, phen = 1,10-phenanthroline) has been synthesized and characterized by single-crystal X-ray diffraction system = space group P31 with a = 13.8319 (13), c = 10.425 (2) , V = 1727.3 (4) 3, Dc = 1.445 g / cm3, Mr = 501.09, F 0.901 mm-1, Z = 3, R = 0.0760 and wR = 0.1730 for 3859 observed reflections (I> 2σ (I)) In this compound, Ni2 + cation is chelated by a phen molecule, one H2cit2-anion and one H2O molecule The citric acid coordinates to the Ni2 + center through three functional groups: α-hydroxyl, α-carboxylate and β-carboxylate while another α-carboxylate forms hydrogen bond with surrounding H2O molecule. And the citric acid is doubly protonated. The temperature-dependent magnetic susceptibility data revealed that the compound is a paramagnetic material.