ON THE COORDINATION OF TRIHYDRATED YTTERBIUM NNTRATE WITH CROWN ETHER B15C5

Chinese Journal of Applied Chemistry ›› 1989, Vol. 0 ›› Issue (2): 77-81.

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ON THE COORDINATION OF TRIHYDRATED YTTERBIUM NNTRATE WITH CROWN ETHER B15C5

Xue Hongfu, Wang Yanqi, Ren Dehou

Department of Chemistry, Northwest University, Xi'an

Received:1988-01-25 Revised:1988-10-04 Published:1989-04-10 Online:1989-04-10

Abstract

Abstract: The solubilities of the ternary system,Yb(NO₃)₃·3H₂O-B15C5-CH₃OH, at 18℃ havebeen investigated by a modified semimcro phase equilibrium method through mesuiementof the refractive indexes of the saturated solutions.The results showed that in the ternarysystem there is only one complex formed with composition of Yb(NO₃)₃·B15C5·3H₂O·2CH₃OH.which had been identified by thermal analysis. The molar ratio of ytterbium salt to water in complexes was found to be 1:3 in anypreparation and there was the same molar content of organic molecule in complexes, i.e.0.65 for all three solvents after the complexes were maintained till constant in weight indiscator with concentrated H₂SO₄.

Key words: Ytterbium ntirate, Crown ether, Phase equilibrium, Coordination compound

Xue Hongfu, Wang Yanqi, Ren Dehou. ON THE COORDINATION OF TRIHYDRATED YTTERBIUM NNTRATE WITH CROWN ETHER B15C5[J]. Chinese Journal of Applied Chemistry, 1989, 0(2): 77-81.

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ON THE COORDINATION OF TRIHYDRATED YTTERBIUM NNTRATE WITH CROWN ETHER B15C5

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