Studies on rare earth coordination compounds with crown ether XXI. competitive coordination reaction of monohydroxyl crown ether with Ca^2^+ and Ln^3^+ ions and the crystal structure of its coordination compound with Ca^2^+

Acta Chimica Sinica ›› 1998, Vol. 56 ›› Issue (6): 583-588. Previous Articles Next Articles

Original Articles

稀土冠醚配合物的研究XXI. 单羟基冠醚与钙、稀土元素间的竞争配位及其钙配位化合物的晶体结构

季振平;程翔;程功臻;蔡铁军;吴成泰;罗保生;谌了容;胡继明

武汉大学化学学院;武汉大学分析测试中心

发布日期:1998-06-15

Studies on rare earth coordination compounds with crown ether XXI. competitive coordination reaction of monohydroxyl crown ether with Ca^2^+ and Ln^3^+ ions and the crystal structure of its coordination compound with Ca^2^+

JI ZHENPING;CHENG XIANG;CHENG GONGZHEN;WU CHENGTAI;LUO BAOSHENG;CHEN LIAORONG;HU JIMING

Published:1998-06-15

Abstract

Under the same reaction conditions, the coordination of monohydroxyl crown ether 6-hydroxy-2, 3, 9, 10-dibenzo-1, 4, 8, 11, 14-pentaoxa-cyclohexadeca-2, 9-diene with Ca^2^+ is stronger than that of Y^3^+. The results of crystal structure of the title complex are as follows: monoclinic, space group P21/c, with α=1.5285(6), b=0.9713(3), c=1.5134(7)nm, β=98.79(3)ⅲ, V=2.2205nm^3, Dex=1.521g/cm^3, Dc=1.527g/cm^3, Z=4. In the complex, eight oxygen atoms (five from crown ether ring, one from -OH, one from a water molecule and one from a monodentate nitrate anion) coordinate to Ca(II) forming an eight coordinated structural unit.

Key words: CRYSTAL STRUCTURE, RARE EARTH METAL COMPLEX, CALCIUM COMPLEX, LANTHANUM COMPLEX, CROWN ETHER

CLC Number:

O611.662

Cite this article

JI ZHENPING;CHENG XIANG;CHENG GONGZHEN;WU CHENGTAI;LUO BAOSHENG;CHEN LIAORONG;HU JIMING. Studies on rare earth coordination compounds with crown ether XXI. competitive coordination reaction of monohydroxyl crown ether with Ca^2^+ and Ln^3^+ ions and the crystal structure of its coordination compound with Ca^2^+[J]. Acta Chimica Sinica, 1998, 56(6): 583-588.

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稀土冠醚配合物的研究XXI. 单羟基冠醚与钙、稀土元素间的竞争配位及其钙配位化合物的晶体结构

Studies on rare earth coordination compounds with crown ether XXI. competitive coordination reaction of monohydroxyl crown ether with Ca^2^+ and Ln^3^+ ions and the crystal structure of its coordination compound with Ca^2^+

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