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A new polymeric complex of Cd(II) with 1,1-dicyanoethylene-2,2-dithiolate [ i-MNT 2-= S2C:C(CN)2 2-] as a bridging ligand has been synthesized and characterized on the basis of spectroscopy and single-crystal X-ray diffraction analysis. Single crystal X-ray diffraction analysis reveals that the cadmium (II) complex is six coordinated 1D polymeric in nature. Biological screening effects in vitro of the synthesized polymeric complex has been tested against five fungi Synchitrium endobioticum, Pyricularia oryzae, Helminthosporium oryzae, Candida albicans(ATCC10231), Trichophyton mentagrophytes by the disc diffusion method. In vitro antifungal screening indicates that the complex exhibits fungistatic and fungicidal antifungal activity whereas K2i-MNT.H2O became silent on Synchitrium endobioticum, Pyricularia oryzae, Helminthosporium oryzae, Candida albicans (ATCC10231), Trichophyton mentagrophytes.

Mixed ligand complexes of Co(II) ion with some heterocyclic nitrogen donors and 1,1-dicyanoethylene-2,2-dithiolate of the compositions, Co(N-N) 2 (i-MNT), Co(N-N)(i-MNT).2H 2 O and Co(N-N)(i-MNT)L 2 [N-N = 1,10-phenanthroline, 2,2'-bipyridine ; i-MNT 2-= 1,1-dicyano-ethylene-2,2dithiolate ; L = pyridine(py), -picoline (-pic), -picoline (-pic) or -picoline (-pic) have been isolated and characterized on the basis of analytical data, molar conductance, magnetic susceptibility, electronic and infrared spectral studies. The molar conductance data reveal non-electrolytic nature of the complexes in DMF. Magnetic moment values suggest low spin complexes. The electronic spectral data suggest distorted octahedral stereochemistry around Co(II) ion in these complexes. Infrared spectral studies suggest bidentate chelating behaviour of i-MNT 2-, 1,10-phenanthroline and 2,2'-bipyridine while other ligands show unidentate behaviour in their complexes.

2015) Cd(II) complexation with 1,1-dithiolate and nitrogen donors: synthesis, luminescence, crystal structure, and antifungal activity studyA new luminescent complex of Cd(II) with 1,1-dicyanoethylene-2,2-dithiolate [i-MNT 2− = {S 2 C:C (CN) 2 } 2− ] has been synthesized and characterized on the basis of spectroscopy and single-crystal X-ray diffraction analysis. Single-crystal X-ray diffraction analysis reveals that the cadmium(II) complex is five coordinate in a 1-D polymer. Biological screening in vitro of the complex has been tested against five fungi Synchytrium endobioticum, Pyricularia oryzae, Helminthosporium oryzae, Candida albicans (ATCC10231), and Trichophyton mentagrophytes by the disk diffusion method. The antifungal activity of the complex of Cd(II) is significant compared to K 2 iMNT on S. endobioticum, P. oryzae, H. oryzae, and T. mentagrophytes and proved to be crucial for the growth-inhibitor effect.A new luminescent complex of Cd(II) with 1,1-dicyanoethylene-2,2-dithiolate [i-MNT 2− = {S 2 C : C (CN) 2 } 2− ] with 1,3-diaminopropane (tn) and 4-methyl pyridine (γ-picoline) as secondary ligands has *Corresponding author. Downloaded by [University of Nebraska, Lincoln] at 03:23 06 April 2015been synthesized and characterized on the basis of spectroscopy and single-crystal X-ray diffraction analysis. Single-crystal X-ray diffraction analysis reveals that cadmium(II) is five coordinate in a 1-D polymer. Biological screening effects in vitro of the synthesized complex has been tested against five fungi Synchytrium endobioticum, Pyricularia oryzae, Helminthosporium oryzae, Candida albicans (ATCC10231), and Trichophyton mentagrophytes by the disk diffusion method. A comparative study of inhibition zone values of K 2 i-MNT·H 2 O and {[Cd(tn)(iMNT)(4-MePy)]·4H 2 O} n (1) indicates that the complex exhibits antifungal activity, whereas K 2 i-MNT·H 2 O became silent on S. endobioticum, P. oryzae, H. oryzae, C. albicans (ATCC10231), and T. mentagrophytes.

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