Short communication, Note

Aquation of (Dimethyl sulphoxide)pentaamminecobalt(III) in Aqueous Cetyhrimethylammonium Bromide Solutions

M. Glavaš ; Faculty of Science, University of Sarajevo, Sarajevo, Bosnia and Hercegovina, Yugoslavia
W. L. Reynolds ; Chemistry Department, University of Minnesota, Minneapolis, Minnesota, U.S.A.

Abstract

The rate of aquation of [Co(NH3)s (DMSO)] Bra was measured
in solutions containing the surfactant cetyltrimethylammonium
bromide (CTAB) over the concentration range 9.55 x 10-4 mol dm-3
to 0.450 mol dm-3• This large change in CTAB concentration affected
the rate very little and no significant amounts of Co(NH3)sBr2+
were formed .. It was concluded that, if Br- counterions were concentrated
in the microregions around the positively charged CTAB
micelles, then there was no corresponding increase in the formation
of Co(NH3)s (DMS0)3+. Br- ion-pairs in this region with subsequent
Co(NH3)sBr2+ formation.

Keywords

Hrčak ID:

194537

URI

https://hrcak.srce.hr/194537

Publication date:

15.11.1980.

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