Author
U. K. Pandey
Bio: U. K. Pandey is an academic researcher. The author has contributed to research in topics: Carbohydrazide & Benzil. The author has an hindex of 3, co-authored 3 publications receiving 56 citations.
Topics: Carbohydrazide, Benzil, Semicarbazide, Thiocarbohydrazide
Papers
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TL;DR: In this paper, the conductance magnetic moment, spectral data, thermal and elemental analyses were used to characterize macrocyclic complexes of [Pr(L)(H2O)2]Cl3, [PR(mac1)]Cl3 and [Pr[Mac2]-Cl3 with semicarazide, thiosemicarbazide and carbohydrazide.
39 citations
TL;DR: In this article, Lanthanum(III) macrocyclic complexes of types [La(mac1)] Cl3 and [La (mac2)(H2O)2] Cl3 have been prepared and characterized by conductance measurements, infrared and 1H and 13C n.m.
Abstract: Lanthanum(III) macrocyclic complexes of types [La(mac1)] Cl3 and [La(mac2)(H2O)2] Cl3 (mac1 = macrocyclic ligands derived by the condensation of diacetyl or benzil with carbohydrazide; mac2 = macrocyclic ligands derived by the condensation of diacetyl or benzil with semicarbazide, thiosemicarbazide or thiocarbohydrazide) have been prepared and characterized by conductance measurements, infrared and 1H and 13C n.m.r spectroscopies and by thermal and elemental analyses.
13 citations
TL;DR: In this paper, the reaction of nsodymium trichloride and samarium trichlodoride with 6,7,13,14-R4-3, 10-X2]-14]-5, 7,12, 14-tetraens-l.5.8.
Abstract: Reactions of nsodymium trichloride and samarium trichloride with 6,7,13,14-R4-3, 10-X2-[14]-5,7,12,14-tetraens-l.5.8.12-N4,-[2.4.9.11-N4] (R = CH3, X = O (L1 (1)): R = C6,H5, X = O (L1 (2)); R = CH3, X = S (L2 (1)) and R = C6H5. X = S (L2 (2)) have been studied in ethanol and complexes of the type [M(L1 (1) or L1(2))]Cl3, and [M (L2 (1) or L2 (2))(H2O)2]Cl3, (M = Nd(III) and Sm(III)) have been isolated. In addition. macrocyclic complexes of Nd(III) and Sm(III) with another series of tetraaza ligands, viz. 5.6.11.12-R4-3.8-X2-[12]-4,6.lO,12-tetraene-1,4,7,10-N4-[2.9-N2] (R = CH3, X = O (L3 (1)); R = C6H5. X = O (L3 (2)): R = CH3. X = S (L4 (1)); R = C6H5, X = S (L4 (2)), formulated as [M(L3 (1), L3 (2), L4 (1) or L4 (2))(H2O)2]Cl3 (M = Nd(III) and Sm(III)) have been prepared by template condensation of Nd(III) and Sm(III) complexes of diacetylbis(semicarbazone/thiosemicarbazone) or benziibis(semicdrbazone/thiosemicarbazone) with diacetyl or benzil. The complexes have been identified by elemental a...
5 citations
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TL;DR: The analysis of the interaction of this novel Pd-thiosemicarbazone compound with DNA secondary structure by means of circular dichroism spectroscopy indicates that it induces on the double helix conformational changes different from those induced by cis-DDP.
137 citations
TL;DR: The testing of cytotoxic activity suggests that these compounds may be endowed with important antiviral properties, and it is interesting to note that the Pd(II)-benzyl bis(thiosemicarbazone) complex, 2, exhibits a significant activity against acyclovir-resistant viruses R-100 ( HSV 1) and PU (HSV 2) with an in vitro selectivity index (SI) of 8.0.
97 citations
TL;DR: In this article, a series of 14-20 membered tetraamide macrocyclic complexes, [ML n ] 2+, where M = Ni II and Cu II, or a tetrahedral geometry for M = Co II and Zn II have been assigned.
67 citations
TL;DR: The studies like elemental analyses, molar conductance measurements, magnetic susceptibility measurements, IR, UV-Vis, NMR, mass and EPR reveal that the complexes are octahedral.
64 citations
TL;DR: In this article, the authors investigated the influence of 3,5-diphenyl-imino-1,2,4-dithiazolidine (DPID), PCID, and PTID on the inhibition of mild steel in 1 N hydrochloric acid (HCl) by weight loss and potentiodynamic polarization.
Abstract: Heterocyclic compounds, namely 3,5-diphenyl-imino-1,2,4-dithiazolidine (DPID); 3-phenyl-imino-5-chlorophenyl-imino-1,2,4-dithiazolidine (PCID); 3-phenyl-imino-5-tolyl-imino-1,2,4-dithiazolidine (PTID); and 3-phenyl-imino-5-anisidyl-imino-1,2,4-dithiazolidine (PAID), were synthesized in the laboratory. Their influence on the inhibition of corrosion of mild steel in 1 N hydrochloric acid (HCl) was investigated by weight loss and potentiodynamic polarization techniques. The inhibition efficiency of these compounds was found to vary with concentration, temperature, and immersion time. Good inhibition efficiency (>90%) was evidenced even at a concentration of 25 ppm. Potentiodynamic polarization results revealed that three of the inhibitors, DPID, PCID, and PAID, are cathodic inhibitors while PTID is a mixed-type inhibitor. Adsorption on the metal surface obeyed Temkin's adsorption isotherm.
41 citations