四正丁基铵高聚碘的合成及其杀菌性能研究

以碘和四正丁基碘化铵为原料,研究了四正丁基铵高聚碘的合成,考察了不同原料配比对产物聚合度的影响。采用Raman和TG分别表征了产物的结构和热稳定性;采用抑菌环法、悬液定量法和振荡烧瓶法测定了产物的杀菌性能,并讨论了其杀菌机理。结果表明,通过改变反应物配比只能生成n-Bu4NI3.0、n-Bu4NI5.0和n-Bu4NI5.43种四正丁基铵高聚碘,其中n-Bu4NI3.0只含有I-3结构,n-Bu4NI5.0只含有I-5结构,而n-Bu4NI5.4是含有I-3、I-5和I-73种结构的混合物。在3种四正丁基铵高聚碘中,n-Bu4NI3.0的热稳定性最好。四正丁基铵高聚碘具有优良的杀菌性能,其杀菌作用分两部分:微量溶于水的高聚碘产生的杀菌作用与高聚碘固体颗粒表面的杀菌作用。

电致化学发光法测定天然水中痕量银（Ⅰ）

对四正丁基碘化胺（ＴＢＡＩ）－银（Ⅰ）－硫脲体系的电致化学发光进行了研究。当在Ｐｔ－Ｐｔ－Ａｇ／ＡｇＣｌ三电极上施加＋１．５Ｖ的正矩形脉冲时，前述体系可观察到电致化学发光现象。银（Ⅰ）对此发光过程有明显的催化作用。银（Ⅰ）的浓度在１．０×１０－８～３．０×１０－６ｍｏｌ／Ｌ范围内与发光强度呈良好的线性关系，检出限为８．０×１０－９ｍｏｌ／Ｌ。相对标准偏差为４％。该法用于测定天然水中的痕量银。结果满意。

STUDIES ON SOLID STATE REACTIONS OF COORDINATION COMPOUNDS XXXXV. SOLID STATE SYNTHESIS AND CRYSTAL STRUCTURE OF [MoAg_3BrS_4I_3][(n-Bu)_4N]_3

C48H108Ag3BrI3MoN3S4, Mr=1735. 84, cubic, F43c, a = b = c = 24. 577(4) A.V= 14845. 2A3, Z = 8, Dc=1. 553g/cm3, Dv = 1. 560g/cm3. Final R = 0. 061 for 307 unique diffraction data with I≥3σ(I). The anion of the title cluster compound can be viewed as a cubane like structure situated at specific equivalent positions in the unit cell with Td symmetry. One Mo and three Ag atoms, one Br and three Sb atoms, one S, and three I atoms are statistically distributed, individually. The distances of Mo....Ag (or Ag....Ag), Mo-Sb(or Ag -Sb, Ag -Br), and Mo-St(or Ag-I) are 3. 303(3), 2. 701(4) and 2. 741(3) A , respectively.