
TY  - JOUR
A1  - Lo, STD 
A1  - Watts, DW 
T1  - 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>
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1975
VL  - 28
IS  - 9
SP  - 1907
EP  - 1914
KW  - 
UR  - https://doi.org/10.1071/CH9751907 
N2  - 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 
ER  -

