4.1.1. Synthesis, crystal and molecular structure of manganese (II) complex of  2-acetylpyridine N (4) ethylthiosemicarbazone

grap-astract-CIS20151214

 

1Felicite Majoumo-Mbe, 1Dieudonne T. Nde, 1Irene N. Mukoko and 2Offiong E. Offiong, 1Emmanuel N. Nfor*

1Department of Chemistry, Faculty of Science, University of Buea, PO Box 63 Buea, Cameroon. 2Department of Pure & Applied Chemistry, University of Calabar, PO Box 1115 Calabar, CRS, Nigeria.

Corresponding Author*: nforemman@gmail.com

Received: December 14, 2015; accepted: February 05, 2016

Abstract

A novel Mn(II) complex with thiosemicarbazone derived from 2-acetylpyridine and N(4)-ethylthiosemicarbazide has been prepared. The single-crystal X-ray analysis of the Mn(II) complex showed a distorted octahedral MnN4S2 environment with the ligand chelating via the nitrogen and sulfur donor atoms in a tridentate manner. The triclinic form of the ligand which has crystallized in a monoclinic system in other works is also described. The basicity of nitrogen atoms of the ligand was tested with its reaction with HNO3 and the structure of the salt obtained is reported. The result shows that the lone pair of the pyridine nitrogen is more available due to the delocalization of other nitrogen lone pair of electron.

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http://dx.doi.org/10.21060/cis.2016.411

Volume 3 (2015): Nº3

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