Photoluminescence of 2-(2-hydroxy-5-methylbenzoyl)-1,5-diphenylpyrrole in aqueous and beta -cyclodextrin environments: manifestation of open and closed conformers

The mononuclear manganese(III) complex of formula [Mn(saloph)(N3)(CH3OH)] [saloph=N,Nʹ-o-phenylenebis (salicylidenaminato)] has been synthesized and its crystal structure has been determined by single-crystal X-ray diffraction method. The compound has a 1D hydrogen-bonded extended structure. Both the FT-IR spectrum and the electrospray ionization mass spectrum (ESI-MS) of the title compound have been recorded. The thermogravimetric analysis has also been carried out. Magnetic calculations showed the presence of antiferromagnetic exchange interactions between the manganese (III) ions through hydrogen bonds with J=-4.0 cm-1.