Microwave-assisted synthesis, third-order nonlinear optical properties, voltammetry cyclic and theoretical calculations of organotin compounds bearing push–pull Schiff bases

Abstract Here we report a green one-pot microwave-assisted synthesis of four push–pull organotin complexes derived from Schiff bases in good yields, which provides advancement over conventional method as it is simple, cost-effective and reproducible. All compounds were characterized by UV–Vis, TOF-HRMS, TGA-DTA, cyclic voltammetry, theoretical studies and compound 1 by X-ray single-crystal diffraction. Third-order nonlinear susceptibility χ (3) of complexes 1 – 4 ; (( E )-N′-(4-(diethylamino)-2-hydroxysalicylidine) nitrobenzohydrazidatediphenyl-tin (IV) ( 1 ), ( E )-N′-(4-(diethylamino)-2-hydroxysalicylidine) nitrobenzohydrazidate di n -butyl-tin (IV) ( 2 ), (( E )-N′-(4-(methoxy)-2-hydroxysalicylidine) nitrobenzohydrazidate diphenyl-tin (IV) ( 3 ), ( E )-N′-(4-(methoxy)-2-hydroxysalicylidine) nitrobenzohydrazidate di n -butyl-tin (IV) ( 4 )) were measured via Maker-Fringes technique. In particular, compounds 1 and 2 display larger third-order nonlinearities than their methoxilated counterparts.