Binary salts of substituted pyridines and L-tartaric acid as nonlinear optical organic materials: crystal structure of L-tartaric acid–4-dimethylaminopyridine (1:1) dihydrate salt

Abstract

A number of salts of substituted pyridines with L-tartaric acid were prepared. Their nonlinear optical behaviour e.g. second harmonic generation (SHG) activity was measured. The crystal structure of L-tartaric acid–4-dimethylaminopyridine (1:1) dihydrate salt 1 was determined in order to understand the relationship between crystal packing and SHG activity within salt 1.