Fluxional behavior of a cadmium zwitterion complex: proton transport and tautomerism in methylene chloride solution.
The synthesis and structure of the tautomeric Cd(II) isoindoline zwitterion coordination compound [Cd(4'-MeLH)(NO(3))(2)].CH(3)OH (4'-MeLH = 1,3-bis[2-(4-methylpyridyl)imino]isoindoline) are reported. In methylene chloride solution, tautomer interconversion occurs as the N-H proton moves between the identical imine nitrogen atoms. We report the kinetics of proton transfer as followed by variable temperature (1)H NMR spectroscopy and demonstrate that methanol of solvation and adventitious water facilitate rapid proton transfer.
Anderson
Oren P
OP
Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, USA.
la Cour
Agnete
A
Berg
Andrew
A
Garrett
Andrew D
AD
Wicholas
Mark
M