PHASE EQUILIBRIUM OF Dy(ClO4)3·3H2O-18C-6CH3CN SYSTEM AND SYNTHESIS OF RELATED COORDINATION COMPOUNDE

Chinese Journal of Applied Chemistry ›› 1991, Vol. 0 ›› Issue (5): 92-95.

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PHASE EQUILIBRIUM OF Dy(ClO₄)₃·3H₂O-18C-6CH₃CN SYSTEM AND SYNTHESIS OF RELATED COORDINATION COMPOUNDE

Ren Dehou, Chang Zhuguo, Guo Xiuyun, Cheng Jiancheng

Department of Chemistry, Morthwest University, Xian 710069

Received:1990-06-26 Revised:1990-11-27 Published:1991-10-10 Online:1991-10-10

Abstract

Abstract: The solubility of the ternary system, Dy(ClO₄)₃.3H2O-18C6-CH₃CN, at 15℃ has beeninvestigated using a somimicro phase eqilibrium mothod.Two kinds3of coordination compo-und were formod in the system: Dy(ClO₄)₃·18C6·3H₂O·2.5CH₃CN and Dy(ClO₄)₃·2 (18C6).3H₂O·2CH₃CN.Examination of the role played by water in this systom during equilibriumshowed that the mole ratio of H₂O to Dy(ClO₄)₃ always equals to 3:1, no matter it isin liquid or solid phase.coordination compounds with the following compositions determi-ned by IR, TC, DTG, DSC, conductance measurements and chemical analyses were obtai-ned: Dy(ClO₄)₃·18C6·3H₂O, Dy(ClO₄)₃·2(18C6·3H2O) Dy(ClO₄)₃·18C6 and Dy(ClO₄)₃·2(18C6).

Key words: coordination compound, crown ether 18C6, dysprosium perchlorate, methyl cyanide, phase diaram

Ren Dehou, Chang Zhuguo, Guo Xiuyun, Cheng Jiancheng. PHASE EQUILIBRIUM OF Dy(ClO₄)₃·3H₂O-18C-6CH₃CN SYSTEM AND SYNTHESIS OF RELATED COORDINATION COMPOUNDE[J]. Chinese Journal of Applied Chemistry, 1991, 0(5): 92-95.

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PHASE EQUILIBRIUM OF Dy(ClO₄)₃·3H₂O-18C-6CH₃CN SYSTEM AND SYNTHESIS OF RELATED COORDINATION COMPOUNDE

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