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Crystal Structures of N, N'-Bis (4-chlorophenyl)-1, 10-diaza-18-crown-6 and Its Complex with Ba (SCN)_2
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作者 章丽娟 刘小兰 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 1996年第1期15-19,共5页
The title compounds,C_(24)H_(32)Cl_2,N_2O_4(I)and C_(26)H_(32)BaCl_2N_4O_4S_2 (Ⅱ)have been synthesized and crystal structures determined. The crystallographic data are as follows: (I)M_r=483. 44,orthorhombic, space g... The title compounds,C_(24)H_(32)Cl_2,N_2O_4(I)and C_(26)H_(32)BaCl_2N_4O_4S_2 (Ⅱ)have been synthesized and crystal structures determined. The crystallographic data are as follows: (I)M_r=483. 44,orthorhombic, space group P2_12_12_1,a= 4. 852 (1), b= 11. 989(2), c=41. 231 (8) A, V=2398. 7(8) A ̄3, Z=4, μ(MoKa)=3. 07 cm ̄(-1), D_c=1. 338 g/cm ̄3, F(000)=960, R=0. 0678, R_w=0. 0514. (Ⅱ) M_r=736.93, monoclinic, space group P2_1/c, a=8. 801 (2), b=11. 653(9) , c=15. 756(6) A,β=105. 96(3)°, V=1553. 7(14) A ̄3, Z= 2, μ(MoKa)=16. 58 cm ̄(-1), D_c=1. 575 g/ cm ̄3, F(000)= 740. In compound Ⅱ, the Ba cation is coordinated by four oxygen atoms, two mitrogen atoms of diazo-18-crown-6 and two nitrogen atoms from SCN ̄- to form a distorted D_(6h) geometry with the Ba ̄(2+) at the center of crystallographic symmetry. 展开更多
关键词 diazacrown ether complexing agent barium complex crystal structure
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Crystal structure and thermal decomposition mechanism of the supramolecular complex of barium chloride with inositol
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作者 WANG Feili TANG Zongxun +4 位作者 LI Shuni HU Daodao ZHAO Hongan HU Huaimin ZHOU Zhongyuan 《Science China Chemistry》 SCIE EI CAS 2005年第z1期50-54,共5页
The single crystal of[Ba(H2O)2(C6H12O6)2Cl2]was obtained based on the phase equilibrium results.Its structure was determined by X-ray crystallographic analysis.The crystals are monoclinic and in space group C2/c with ... The single crystal of[Ba(H2O)2(C6H12O6)2Cl2]was obtained based on the phase equilibrium results.Its structure was determined by X-ray crystallographic analysis.The crystals are monoclinic and in space group C2/c with a=1.9017(2)nm,b=0.68213(8)nm,c=0.16260(2)nm,β=96.593(2)°and V=2.0953(4)nm3,Z=4,DC=1.917 g·cm-3.In its solid state,this supramolecular complex is a three-dimensional network with double layers connected by hydrogen bondings.The molecule structure of[Ba(H2O)2(C6H12O6)2Cl2]has a central barium ion that is coordinated to two water molecules,two chlorides,and four hydroxyls from the two inositols.Losing the coordinating water is controlled by random nucleation and growth mechanism(n=2/3)and 3-dimensional diffusion mechanism(n=2). 展开更多
关键词 barium complex inositol crystal structure water loss mechanism
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