Zhong Guo
2001
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Journal
Fine chemicals
Abstract
The complex of bisglycinato zinc(Ⅱ) monohydrate was synthesized with glycine and basic zinc carbonate as raw materials.The optimum technological conditions were that molar ratio of glycine to basic zinc carbonate was 1 00∶0 35,reaction temperature was 95 ℃,and reaction time was 8 h.The yield was over 92%.Composition and structure of the complex were characterized by elementary analysis,infrared spectrum,thermogravimetric and differential thermal analyses and X ray powder diffraction.Its composition is [Zn(NH 2CH 2COO) 2]·H 2O.First stage in the thermal decomposition process of the complex showed the presence of one molecule of crystalline water.The results of indexization of the X ray powder diffraction data indicated that the crystal structure of the complex belongs to monoclinic system.The lattice parameters are: a =0 7642 nm, b =1 1827 nm, c =1 6465 nm,β=81 75°, V =1 4727 nm 3.