
TY  - JOUR
A1  - Tkaczuk, MN 
A1  - Lincoln, SF 
T1  - A phosphorus-31 magnetic resonance study of ligand exchange on tetrakis(hexamethylphosphoramide)zinc(II) ion
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1980
VL  - 33
IS  - 12
SP  - 2621
EP  - 2626
KW  - 
UR  - https://doi.org/10.1071/CH9802621 
N2  - The rate of the associative ligand exchange process on tetrakis (hexamethylphosphoramide)zinc(II) ion in CD2Cl2 solution, determined by 31P n.m.r. spectroscopy, is given by:                      rate = 4k2[O=P(Nme2)3][Zn(O=P(NMe2)3)42+] The characteristic kinetic parameters are: k2(240 K) 304±17 dm3 mol-1 s-1, &#916;H2&#8225; 22.7±0.9 kJ mol-1, and &#916;S2&#8225; -101±4 J K-1 mol-1.     The preparations of [Zn(O=P(NMe2)3)4](ClO4)2, [Zn(O=P(OMe)3)5] (ClO4)2 and [Zn {O=P(Me)-(OMe)2}5](ClO4)2 are reported. The rate of ligand exchange upon the last two species was found to be in the fast-exchange limit of the n.m.r. time scale. 
ER  -

