Synthesis and crystal structure of one-dimensional azide-bridged Mn(III) polymer [Mn(Sal2-1,2Pn)(N3)]n (Sal2-1,2Pn = N,N′-bis(salicylidene)-1,2-propanediamine)

The new one-dimensional azide-bridged manganese(III) polymer, [Mn(Sal2-1,2Pn)(N3)]n (I), where Sal2-1,2 Pn = N, N,N′-bis(salicylidene)-1,2-propanediamine, was prepared from a reaction mixture containing Sal2-1,2 Pn, MnCl2 · 2H2O and NaN3 (2: 1: 8 molar ratio) in methanol-chloroform (v/v 2: 1) and has been characterized by elemental analyses, FT-IR spectroscopy, and X-ray single-crystal diffraction. In the structure of I, Mn3+ ion is in a distorted octahedral geometry with an obvious Jahn-Teller distortion. The quadridentate Schiff-base ligand Sal2-1,2Pn is located in the equatorial plane. The azide ion acts as an end-to-end bridge to form the one-dimensional manganese(III) polymer.