Sugar interaction with metal ion: crystal structure and spectroscopic study of SrCl2.galactitol.4H2O |
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| Authors: | Su Yunlan Yang Limin Wang Zheming Weng Shifu Yan Chunhua Wu Jinguang |
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| Affiliation: | The State Key Laboratory of Rare Earth Material Chemistry and Applications, Department of Chemical Biology, College of Chemistry, Peking University, 100871, Beijing, PR China. |
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| Abstract: | The crystal structure of SrCl(2).galactitol.4H(2)O has been determined. It belongs to monoclinic system, C2/c space group with unit cell dimensions: a=13.9849(3), b=14.1601(5), c=8.3026(3) A, beta=104.621(2) degrees, V=1590.9(9) A(3) and Z=4. Each Sr(2+) ion in the unit cell binds to two molecules of galactitol through O2 and O3 in one alditol and O2' and O3' in the other, as well as to four water molecules. Sr-O distances in SrCl(2).galactitol.4H(2)O complex range from 2.5420 to 2.6359 A. FT-IR, Raman and far-IR spectra of SrCl(2).galactitol.4H(2)O all show that SrCl(2) coordinates with galactitol through OH groups of the sugar molecule to form the new complex. |
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