
TY  - JOUR
A1  - Couldwell, MC 
A1  - House, DA 
A1  - Powell, HKJ 
T1  - Diaquabis(diamine)chromium(III) complexes: Acid dissociation constants and isomerization
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1973
VL  - 26
IS  - 2
SP  - 425
EP  - 429
KW  - 
UR  - https://doi.org/10.1071/CH9730425 
N2  - Acid dissociation constants are reported for the following equilibria:     trans-Cr(A)(B)(H2O)23+(aq) + H2O &#8596;             trans-Cr(A)(B)(OH)(H2O)2+(aq)+H3O+(aq) pK1   trans-Cr(A)(B)(OH)(H2O)2+(aq) + H2O &#8596;                trans-Cr(A)(B)(OH)2+(aq)+H3O+(aq) pK2   where A = B = en; A = B = tmd; A = en, B = tmd. Similar results were   obtained for each complex: pK1 c. 4.2, pK2 c. 7.6; 1M NaNO3, 25°. The results are compared with pK data for related complexes of chromium and cobalt. The complex Cr(en)2(H2O)(OH)2+ undergoes extensive Cr-N bond rupture to yield deaminated products. 
ER  -

