Synthesis, growth and characterization of donor–acceptor π-conjugated N-chlorosuccinimide single crystals for nonlinear optical applications

Single crystals of N-chlorosuccinimide (NCS) were grown by slow evaporation solution growth technique. The grown crystals were confirmed by single crystal X-ray diffraction and FT-IR studies. The theoretical factorial group analysis was carried and the vibrational modes are assigned. The dielectric behaviour studied both as function of frequency and temperature reveal that, as frequency decreases more and more charge accumulation occurs at the interface between electrode and electrolyte, which leads to a drop in conductivity at low frequencies. The first order hyperpolarizability value determined by quantum chemical calculations are well supported by the results obtained from Kurtz–Perry powder technique.