Ilmar A. Koppel

Influence of substituents on the infrared stretching frequencies of carbonyl group in esters of benzoic acid

I. Leito, O. Travnikova, I. Koppel, 2006 .

Additivity of substituent effects on the acidity of alcohols

J. Abboud, I. Koppel, I. Koppel, 2013 .

Acidities of strong neutral Brønsted acids in different media

A. Trummal, I. Leito, I. Koppel, 2013 .

Quantitative description of acidity of XOH compounds in the gas phase and dimethyl sulphoxide with use of HOMO energies of XO− anions

V. M. Vlasov, P. Burk, I. Koppel, 1995 .

The enormous apparent gas-phase acidity of cubylamine

E. W. Della, J. Abboud, J. Dávalos, 2004 .

Basicity of Guanidines with Heteroalkyl Side Chains in Acetonitrile

M. Eckert-Maksić, I. Koppel, A. Kütt, 2008 .