| Scope of study. Addition of nicotinic acid esters or other derivatives of pyridine to CuI in acetonitrile results in crystalline solids of various structural motifs and luminescent properties. All emit in the solid state but the luminescence of some is of different color at very low temperatures (100K or lower). Most have stoichiometries of 1:1:1 (polymeric pleated sheets and cubes) but some have 1:1:2 (rhombs), and one has 1:1:1.25 (chair). Single crystal X-ray studies of selected materials were carried out at low temperature to discover correlations between thermochromicity and structure.;Findings and conclusions. Comparison of room temperature and low temperature (100K) structures of Cu... |
