Synthesis, characterization, and X-ray crystal structure of the manganese(III) complex Mn(Sal2hn)(CH3OH)(N3) [Sal2hn = N,N′-bis(salicylidene)-1,2-hexanediamine]

The new manganese(III) complex, Mn(Sal 2 hn)(CH 3 OH)(N 3 ), where Sal 2 hn = N,N′-bis(salicylidene)-1,2-hexanediamine, was prepared from a reaction mixture containing Sal 2 hn, MnCl 2 · 2H 2 O, and NaN 3 (2: 1: 8 molar ratio) in methanol and characterized using elemental analysis, FT-IR spectroscopy, and X-ray single-crystal diffraction. In the title complex, the Mn(III) center is in a distorted octahedral coordination geometry with the basal plane formed by the N 2 O 2 donors of the tetradentate Schiff base dianion; the two phenolate O atoms and the two imine N atoms are each mutually in the cis position. The azide ion and the O atom of the methanol molecule occupy the other two positions of the octahedron. The hydrogen bond O(3)-H(3O)⋯N(5) links the mononuclear Mn(Sal 2 hn)(CH 3 OH)(N 3 ) units into a 1D chain extended along the x axis. The crystal structure is further stabilized by C(7)-H(7)⋯N(3) and C(16)-H(16)⋯N(5) hydrogen bonds.