Synthesis , characterisation and antibacterial studies of anionic chelate complexes of manganese (ii) with various schiff’s base ligands

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Author: 
Dr. Minati Sahu
Abstract: 

In the present study, four anionic Mn(II) complexes of various Schiff’s bases such as Salicylaldehyde ethylenediamine (Sal2en), Salicylaldehyde Orthoaminophenol (Sal OAP),Salicylaldehyde Semicarbazone (Sal Sc) and salicylaldehyde o-phenylene diamine (Sal2phen) along with NH4SCN ligand were synthesised. The resulting complexes were suggested to have formulae (1)[NH4]2[Mn(Sal2en)(SCN)2], (2)[NH4]2[Mn(SalOAP)(SCN)2.H2O], (3)[NH4]2[Mn(Sal2phen)(SCN)2] and (4) [NH4]2[Mn(Sal.Sc) (SCN)2.H2O].The formulae of the complexes were based on the characterisation such as its molecular weight, conductivity measurements, melting point/stability, magnetic susceptibility, UV spectroscopy and Infrared spectral studies. Interesting results were obtained revealing six coordination and chirality of the central metal ion. The antibacterial activity was studied against two Strain Gram +ve bacteria (Staphalococcus auras, Enterococcus) and two Strain Gram -ve bacteria (E.coli, P.aeruginosa) to observe their inhibiting tendency. The results showed complexes were inactive against Staphalococcus auras except for complex (3) and all the complexes have moderate or no activity against the rest microorganisms.

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   Vol. 07, Issue 03, March 2017

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