
%0 Journal Article
%A Lo, STD 
%A Watts, DW 
%T Chromium(III) complexes in dipolar aprotic solvents. VIII. Solvolysis of hexaisothiocyanatochromate(III) and solvent exchange, substitution and anation of the pentaisothiocyanato(solvento)chrornate(III) complex, [Cr(NCS)<sub>5</sub>(sol)]<sup>2-</sup>
%J Australian Journal of Chemistry
%D 1975/09/01
%V 28
%N 9
%P 1907-1914
%K 
%R https://doi.org/10.1071/CH9751907
%U https://www.publish.csiro.au/paper/CH9751907 
%X The displacement of the coordinated Me2SO from [Cr(NCS)5(Me2SO)]2- by NCS- and pyridine has been studied in the solvent tetramethylene sulphone (sulpholane). The results are consistent with a limiting dissociative mechanism. The solvolysis reactions:                    [Cr(NCS)6]3- + sol &#8594; [Cr(NCS)5(sol)]2- + NCS-   have been studied in the solvents (sol) Me2SO, HCONMe2 and MeCONMe2. The transition states for these solvolysis reactions are compared with a dissociative model                            [Cr(NCS)5(3-)+(&#8706;+)...NCS&#8706;-]   by means of solvent transfer activity coefficients. Kinetic and activation data are recorded for a number of solvent interchange reactions:               [Cr(NCS)5(sol1)]2- + sol2 &#8594; [Cr(NCS)5(sol2)]2- + sol1 
