用核磁共振法(简称NMR)测定了ZnCl_2水溶液的~1H化学位移.通过~1H化学位移、温度和ZnCl_2浓度的半经验关系式,求得ZnCl_2溶液中Zn~2+离子水合数为3.8.用~1H,~(13)C的NMR研究了TBP-CCl_4萃取ZnCl_2时,其配合物组成为ZnCl_2·2TBP·2H_2O和ZnCl_2·2TBP.在该体系中确有部分水和ZnCl_2结合在一起.
The ~1H chemical shift of ZnCl_2 aqueous solution has been measured by N.M.R.The hydration number of Zn~(2+)cation,equal to 3.8,was determined accordingto semi-empirical relationship between ~1H chemical shift,temperature T and concen-tration of ZnCl_2.The compositions of coordination compounds which are formedin TBP-CCl_4 extracting ZnCl_2 were studied by ~1H and ~(13)C N M R,as ZnCl_2·2TBP·2H_2O and ZnCl_2·2TBP.The phenomena of N.M.R.proved that part of waterreally combined with ZnCl_2 to form coordination in ZnCl_2-TBP-CCl_4-H_2O system.
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