Table of Contents
International Journal of Inorganic Chemistry
Volume 2014, Article ID 902575, 10 pages
Research Article

Complexing Behaviour and Antifungal Activity of N-[(1E)-1-(1H-Benzimidazol-2-yl)ethylidene]morpholine-4-carbothiohydrazide and Related Ligand with Metal Ions

1Department of Chemistry, N.I.T, Patna, Bihar 800005, India
2D/O Bansropan Sharma, Moti Chowk Saidpura, Thana Road Khagaul, Patna, Bihar 801105, India
3Department of Chemistry, Patna University, Patna, Bihar 800005, India

Received 6 September 2013; Revised 11 December 2013; Accepted 17 December 2013; Published 22 April 2014

Academic Editor: Alfonso Castiñeiras

Copyright © 2014 Madhu Bala and L. K. Mishra. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The coordination complexes of bivalent metal ions with N-[(1E)-1-(1H-Benzimidazol-2-yl)ethylidene]morpholine-4-carbothiohydrazide (H2bmctz, H2L-1) and N-[(1E)-1-(1H-Benzimidazol-2-yl)(phenyl)methylidene] morpholine-4-carbothiohydrazide (H2bpmctz, H2L-2) were prepared and their neutral, monoanionic, and dianionic forms of ligands of compositions [M(H2L)X2] (M= , , , , , or , X=Cl or Br, and H2L=H2L-1 or H2L-2), [M(HL)2]nH2O where (M= , , , , or , H2L=H2L-1 or H2L-2, and n = 0 or 2), and [MLB]nB (M= , , , , or , B=H2O, Py, or -pic, n = 0 and n = 1 if B=H2O for Ni(II) and H2L=H2L-1 or H2L-2) have been characterised by magnetic susceptibility measurements, electrical conductance values, and spectral properties. The magnetic moment value of [M(HL2)] (M= , , or ) type complexes is consistent with high spin octahedral structure while those of [M(H2L)X2] (M= , , , , or , X=Cl or Br) possess five coordinated trigonal bipyramidal geometry. The adduct complexes [MLB]·nB (M= , or , B=H2O, Py, or -pic) are four coordinated planar and those of and complexes [MLB], (H2L=H2L-1 or H2L-2, B=H2O, Py or -pic) are tetrahedral. These ligands have been suggested to coordinate as tridentate (N N S) donor molecule in complexes of type [M(H2L)X2], [M(HL)2], and [MLB]. The antifungal activity of ligands and some of their metal complexes were studied and it was observed that metal complexes show higher activity than free ligand.