
TY  - JOUR
A1  - Dakternieks, DR 
A1  - Graddon, DP 
T1  - Thermodynamics of metal-ligand bond formation. VIII. Pyridine adducts of zinc(II) &#946;-diketonates
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1973
VL  - 26
IS  - 11
SP  - 2537
EP  - 2539
KW  - 
UR  - https://doi.org/10.1071/CH9732537 
N2  - Equilibrium constants and enthalpies in benzene solution are reported for the formation of 1 : 1-adducts of pyridine with four zinc(II) complexes of &#946;-diketones, determined by calorimetric titration. Adduct formation constants at 30°C fall in the range 300-2000 and enthalpies of formation lie between -15 and - 34 kJ mol-1. Though the enthalpies of formation differ little from those of corresponding copper(II) complexes, the adducts are about a hundred times more stable. The pyridine adduct of bis(2,2,6,6-tetramethylheptane-3,5-dionato)zinc(II) is entropy-stabilized relative to those of other complexes. No evidence was obtained for the addition of a second molecule of pyridine under the experimental conditions used. 
ER  -

