Synthesis of Triphenyltin (IV) and Dibutyltin (IV) Complexes of 1-Aryl-2,5-dithiohydrazodicarbonamides and Their Characterization

Abstract

Organotin complexes of the types Ph 3 SnL and Bu 2 SnL [where Ph = phenyl and Bu = butyl; HL = 1-phenyl-2,5-dithiohydrazodicarbonamide (HPhthc), 1-benzyl-2,5-dithiohydrazodicarbonamide (Hbzthc), 1-(4-ethoxyphenyl)-2,5-dithiohydrazodicarbonamide (HEtOPhthc)] have been prepared. Molar conductance studies demonstrate the nonionic behavior of the complexes. The 1 H and 13 C nuclear magnetic resonance and FAB mass spectra of the complexes are consistent with the proposed stoichiometry. Infrared spectra suggest an anionic bidentate coordinating behavior of the ligands.

Corrosion Inhibition Potential of Dithiohydrazodicarbonamide Derivatives for Mild Steel in Acid Media: Synthesis, Experimental, DFT, and Monte Carlo Studies

“…12 for labelling): the Ar-C group is located at C(1)-C(4), C(6), C (8) with the peaks at δ (ppm), 115.07, 115.30, 135.78, 127.83, 161.12, 158.70; the C=S group is located at C(13), C (19) with the peaks at δ (ppm), 182.13,183.14. All values of peaks for the 1 H and 13 C NMR spectra have been compared and confirmed by previous studies [31,37,[39][40][41][42].…”

“…The 4000-400 cm −1 wavenumber range was observed in the FT-IR spectrum. Figure S1 (A [33,37]. There is a minor shift in the location of the first two bands in both ligands and seems to be not affected by complexation, suggesting that the (-NH 2 ) nitrogen is not involved in the coordination.…”

“…The C-F bond was observed at peak with the range 1103.9-1013.96 cm −1 in both ligands with positive shifting, due to change the position of F in the coordination [38]. The position of ν(C=S) bond in the range 863.66-831.47 cm −1 with a lower and a higher shift in the spectra of the complexes, it could be related to change the position of F in the coordination [37].…”