1995 Fiscal Year Final Research Report Summary
A STUDY ON MICROSCOPIC STRUCTURE IN INCOMPLETELY HYDRATED MELTS
| Project/Area Number |
06640712
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
Inorganic chemistry
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| Research Institution | DEPARTMENT OF METERIAL AND BIOLOGICAL CHEMISTRY,YAMAGATA UNIVERSITY |
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Principal Investigator |
KAMEDA Yasuo YAMAGATA UNIVERSITY DEPARTMENT OF MATERIAL AND BIOLOGICAL CHEMISTRY,ASSOCIaTE PROFESSOR, 理学部, 助教授 (60202024)
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| Co-Investigator(Kenkyū-buntansha) |
USUKI Takeshi YAMAGATA UNIVERSITY,DEPARTMENT OF MATERIAL AND BIOLOGICAL CHEMISTRY,ASSOCIATE PR, 理学部, 助教授 (70250909)
UEMURA Osamu YAMAGATA UNIVERSITY,DEPARTMENT OF MATERIAL AND BIOLOGICAL CHEMISTRY,ASSOCIATE PR, 理学部, 教授 (30007166)
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| Project Period (FY) |
1994 – 1995
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| Keywords | X-ray anomalous scattering method / Neutron diffraction / Raman spectroscopy / Isotopic substitution method / Hydrated melt |
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| Research Abstract |
X-ray anomalous scattering, neutron diffraction with isotopic substitution and Isotropic Raman spectroscopic studies have been carried out for incompletely hydrated EuCl_3, DyCl_3, LiBr and HCOOLi melts, and highly concentrated methanolic LiBr and Lil solutions, in order to obtain detailed information on the local structure around constituent ions in these solutions. Stuctural analysis of concentrated aqueous DyCl_3 solution with excess amount of Cl^- (Dy^<3+> : Cl^-=1 : 6) evidenced the existence of contact ion pair, Dy^<3+>Cl^- (r_<DyCl>=2.9A). The solvation structure of Li^+ in highly concentrated aqueous LiBr, HCOOLi and methanolic LiBr and Lil solutions was determined by neutron diffraction and Raman scattering methods. Details of the structure concerning the contact ion pair, Li^+X^- (X=Br, l and HCOO), in these solutions was obtained. The hydration structure of Na^+ and HCOO^- was deduced from the X-ray, neutron and Raman analyzes for highly concentrated aqueous HCOONa solution.
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