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Citation: Luo Qinhui*, Feng Xudong, Tu Qinyun, Shen Mengchang. STUDIES ON THERMODYNAMICS OF CROWN COORDINATION COMPOUNDS (Ⅷ) CALORIMETRIC TITRATION FOR COORDINATION REACTION OF DEHYDRATED LANTHANUM NITRATE WITH SOME CROWNS IN ACTONITRILE[J]. Acta Physico-Chimica Sinica, ;1988, 4(02): 212-215. doi: 10.3866/PKU.WHXB19880218 shu

STUDIES ON THERMODYNAMICS OF CROWN COORDINATION COMPOUNDS (Ⅷ) CALORIMETRIC TITRATION FOR COORDINATION REACTION OF DEHYDRATED LANTHANUM NITRATE WITH SOME CROWNS IN ACTONITRILE

1.
Coordination Chemistry Research Institute; Nanjing University

Received Date: 24 September 1986
Available Online: 15 April 1988

The coordination reaction of lanthanum nitrate with 18-crown-6, dicyclohexyl-18-crown-6 and 2,3-benzo-11-methyl-18-crown-6 in acetonitrile was studied. The reaction enthalpies and stability constants were obtained by home-made titration calorimeter and computer program. We demonstrated that the reaction is exothermic on condition that the lanthanum nitrate was dehydrated ri rously. Supplementary experiments showed that the reaction heat is dependent obviously on water content in lanthanum nitrate. Because lanthanum (III) ion has strong hydrophilic ability and large hydration heat, large energy consumption is necessary when crown replaces the coordinated water. Therefore, if the lathanum nitrate has not been dehydrated ri rously, the reaction heat measured may be small negative or positive value.
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STUDIES ON THERMODYNAMICS OF CROWN COORDINATION COMPOUNDS (Ⅷ) CALORIMETRIC TITRATION FOR COORDINATION REACTION OF DEHYDRATED LANTHANUM NITRATE WITH SOME CROWNS IN ACTONITRILE

南开大学师唯/华北电力大学（保定）刘景维：二维配位聚合物中有序的亲锂冠醚位点用于无枝晶锂沉积

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通讯作者: 陈斌, bchen63@163.com