Citation:
Xue Hongfu, Wang Yanqi, Ren Dehou. ON THE COORDINATION OF TRIHYDRATED YTTERBIUM NNTRATE WITH CROWN ETHER B15C5[J]. Chinese Journal of Applied Chemistry,
;1989, 6(2): 77-81.
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The solubilities of the ternary system,Yb(NO3)3·3H2O-B15C5-CH3OH, at 18℃ have been investigated by a modified semimcro phase equilibrium method through mesurement of the refractive indexes of the saturated solutions.The results showed that in the ternary system 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 any preparation 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.
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