Open AccessMononuclear Manganese(IV) Complexes Derived from Polyfunctional Fumaryldihydrazone
Author(s) -
Pranami Mahanta,
Parismita Sarma,
Debajani Basumatary,
Chitrani Medhi
Publication year - 2022
Publication title -
asian journal of chemistry/asian journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.145
H-Index - 34
eISSN - 0975-427X
pISSN - 0970-7077
DOI - 10.14233/ajchem.2022.23625
Subject(s) - chemistry , manganese , picoline , tetrahydrate , electron paramagnetic resonance , pyridine , inorganic chemistry , molecule , octahedral molecular geometry , medicinal chemistry , crystallography , organic chemistry , nuclear magnetic resonance , crystal structure , physics
A series of mononuclear manganese(IV) complexes of disalicylaldehyde fumaroyldihydrazone (slfhH4)were synthesized by reacting manganese acetate tetrahydrate with dihydrazone in absence and presenceof various pyridine bases in methanol medium. Pyridine (py) and its derivatives like 2-picoline (2-pic),3-picoline (3-pic), 4-picoline (4-pic), 2,2′-bipyridine (bpy) and 1,10-phenanthroline (phen) were addedto the reaction mixture of metal salt and dihydrazone to explore the binding possibilities of thesemolecules to manganese center. The elemental analysis, mass spectral and thermal studies were usedto derive their composition. Study of magnetic moment, molar conductances, electronic, EPR andinfrared spectroscopy have led to interpretation of their tentative structures. Magnetic moment andEPR studies correspond to their Mn(IV) oxidation state. The dihydrazone functions as tetradentateligand chelating the manganese(IV) ion present in octahedral geometry with anti-cis configuration inenol form. Electrochemical and antimicrobial studies were also performed.