Six new solid complexes of macrocyclic polyether ligand 4′-bromo-5′-nitrobenzo-15-crown-5(L)with Uivalent rare earth nitrates having composition of RE(NO_3)_3·L·mCH_3CN·nH_2O(RE=L_a--Nd,m=n=0, RE=Sm,B...Six new solid complexes of macrocyclic polyether ligand 4′-bromo-5′-nitrobenzo-15-crown-5(L)with Uivalent rare earth nitrates having composition of RE(NO_3)_3·L·mCH_3CN·nH_2O(RE=L_a--Nd,m=n=0, RE=Sm,Bu,m=0.1,n=1,4)have been synthesized in acetonitrile or acetone.All the isolated complexes have been char- acterized by elementary analysis,IR and UV spectra,differential thermal and thermogravimetric analysis,X-ray powder diffraction analysis,molar conductance and measurementa of solubility in some general solventa.It shows that coordination number of the rare earth cation in the complexes of La,Ce,Pr and Nd nitrate is eleven.展开更多
The solid complex of lithium perchlorate with 4 tert butylbenzo 15 crown 5（4 t BB15C5） has been prepared in iodobenzene. The composition of the solid was determined as Li（4 t BB15C5）ClO 4 and its melting point was...The solid complex of lithium perchlorate with 4 tert butylbenzo 15 crown 5（4 t BB15C5） has been prepared in iodobenzene. The composition of the solid was determined as Li（4 t BB15C5）ClO 4 and its melting point was 119121 ℃. The far IR shift of the complex is obvious. The far IR absorption band of the complex containing 100% 6Li can be found by extrapolation, resolving the difficulty in obtaining a sample of 100% 6Li up to now. A relative reduced partition function ratio, [（ s/s′）f ] org , being 1.045 is calculated. Since the [ （s/s′）f ] aq of lithium perchlorate in solid state had been obtained as 1.025 and may act as that in aqueous phase, the phase equilibrium separation factor α may be obtained as 1.019 by the quotient of 1.045/1.025 for the extractive system of （4 t BB15C5） C 6H 5I/LiClO 4 H 2O. The value of α is just equal to the value of intrinsic separation factor （1+ ε p） described previously. [WT5HZ]展开更多
文摘Six new solid complexes of macrocyclic polyether ligand 4′-bromo-5′-nitrobenzo-15-crown-5(L)with Uivalent rare earth nitrates having composition of RE(NO_3)_3·L·mCH_3CN·nH_2O(RE=L_a--Nd,m=n=0, RE=Sm,Bu,m=0.1,n=1,4)have been synthesized in acetonitrile or acetone.All the isolated complexes have been char- acterized by elementary analysis,IR and UV spectra,differential thermal and thermogravimetric analysis,X-ray powder diffraction analysis,molar conductance and measurementa of solubility in some general solventa.It shows that coordination number of the rare earth cation in the complexes of La,Ce,Pr and Nd nitrate is eleven.
基金the National Natural Science Foundation of China (No. 20371040) the Foundation (031-A21-004)of Gansu province and the Foundation (No. 02-18) of Northwest Normal University.
基金the National Natural Science Foundation of China (No. 20371040) the Foundation (031-A21-004)of Gansu province and the Foundation (No. 02-18) of Northwest Normal University.
文摘The solid complex of lithium perchlorate with 4 tert butylbenzo 15 crown 5（4 t BB15C5） has been prepared in iodobenzene. The composition of the solid was determined as Li（4 t BB15C5）ClO 4 and its melting point was 119121 ℃. The far IR shift of the complex is obvious. The far IR absorption band of the complex containing 100% 6Li can be found by extrapolation, resolving the difficulty in obtaining a sample of 100% 6Li up to now. A relative reduced partition function ratio, [（ s/s′）f ] org , being 1.045 is calculated. Since the [ （s/s′）f ] aq of lithium perchlorate in solid state had been obtained as 1.025 and may act as that in aqueous phase, the phase equilibrium separation factor α may be obtained as 1.019 by the quotient of 1.045/1.025 for the extractive system of （4 t BB15C5） C 6H 5I/LiClO 4 H 2O. The value of α is just equal to the value of intrinsic separation factor （1+ ε p） described previously. [WT5HZ]
