
TY  - JOUR
A1  - House, DA 
A1  - Vaneldik, R 
T1  - Anionopentaaminecobalt(III) Complexes With Polyamine Ligands. XXVI. Spontaneous and Hg<sup>2+</sup>-Assisted Chloride Release Kinetics From Some CoCl(tacn)(diamine)<sup>2+</sup> Complexes
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1993
VL  - 46
IS  - 11
SP  - 1775
EP  - 1785
KW  - 
UR  - https://doi.org/10.1071/CH9931775 
N2  - The rate of spontaneous ( kH ) and Hg2+ assisted ( kHg ) chloride release from some CoCl ( tacn )( diamine )2+ complexes [ tacn = 1,4,7-triazacyclononane; diamine = ethane-1,2-diamine (en), propane-1,3-diamine ( tn ), 2-aminomethylpyridine ( ampy )] have been measured in acidic aqueous solution as a function of temperature and pressure. Rate constants (at 25.0&#176;C), &#916;H&#8225; (kJ mol-1), &#916;S&#8225; (J K-1 mol-1), &#916;V&#8225; (cm3 mol-1) are: 106 kH (en) = 1.63 (s-1), 93, -44, -3.6; 106kH ( tn ) = 1.86 (s-1), 92, -47, -4.5; 106kH ( ampy ) = 0.343 (s-1), 103, -22; 103kHg (en) = 11.0 (dm3 mol-1 s-1), 74, -32, +1.44; 103kHg ( tn ) = 54.0 (dm3 mol-1 s-1), 77, -13, +3.26; 103kHg ( ampy ) = 10.2 (dm3 mol-1 s-1), 76, -30, +0.86. The normal accelatory influence observed when en is replaced by tn is very weak in these structurally rigid tacn systems. 
ER  -

