Results 21 to 30 of about 59,471 (323)

[N′-(5-Bromo-2-oxidobenzylidene-κO)-2-chlorobenzohydrazidato-κ2N′,O](methanol-κO)(methanolato-κO)oxidovanadium(V)

Acta Crystallographica Section E, 2011
The VV atom in the title complex, [V(C14H8BrClN2O2)(CH3O)O(CH3OH)], is six-coordinated by one phenolate O, one imine N and one enolic O atom of the hydrazone ligand, one oxide O atom, one methanol O atom and one methoxide O atom in a distorted octahedral
Fu-Ming Wang
doaj   +1 more source

Design, Synthesis and Structural Characterization of a Novel Asymmetric Hydrazone-Thiosemicarbazone Ligand with the Aim of Obtaining Interesting Metallosupramolecular Architectures

Chemistry Proceedings, 2021
The asymmetric hydrazone-thiosemicarbazone ligand H2L was synthesized in two stages by means of a double-condensation reaction. The potentially dianionic and pentadentate [N3SO] organic ligand H2L possesses two flexible bidentate [NS/NO] domains ...
Sandra Fernández-Fariña, Isabel Velo-Heleno, Miguel Martínez-Calvo, Ana M. González-Noya, Rosa Pedrido   +4 more
doaj   +1 more source

Preparation and Antimicrobial Activity of s-Triazine Hydrazones of 7-Hydroxy Coumarin and Their Metal Complexes

E-Journal of Chemistry, 2009
Metal complexes of 7-hydroxy coumarin hydrazone of s-triazine derivatives derived from 7-hydroxy-8-aceto-N-(4',6’-dichloro-1',3',5'-s-triazine) coumarin hydrazone and transition metals have been synthesized and screened for their antibacterial ...
G. R. Jani, K. B. Vyas, Zudas Franco
doaj   +1 more source

Two Zinc(II) Complexes with Similar Hydrazone Ligands: Syntheses, Crystal Structures and Antibacterial Activities

Acta Chimica Slovenica, 2020
A pair of new mononuclear zinc(II) complexes with hydrazone ligands 4-methoxybenzoic acid (1-pyridin-2-ylmethylidene)hydrazide (HLa) and benzoic acid (1-pyridin-2-ylethylidene)hydrazide (HLb) were prepared. They are [Zn(La)2] (1) and [Zn(Lb)2] (2).
Ya-Li Sang, Xue-Song Lin, Wei-Dong Sun
doaj   +1 more source

Simple oxidation of pyrimidinylhydrazones to triazolopyrimidines and their inhibition of Shiga toxin trafficking [PDF]

, 2010
The oxidative cyclisation of a range of benzothieno[2,3-d]pyrimidine hydrazones (7a–j) to the 1,2,4-triazolo[4,3-c]pyrimidines (8a–j) catalysed by lithium iodide or to the 1,2,4-triazolo[1,5-c]pyrimidines (10a–j) with sodium carbonate is presented.
Ahmed, Bhaskar, Brown, Chen, Curini, Dai, El Ashry, Feng, Gundla, Guy J. Clarkson, Han, Hassan, J. Michael Lord, Jennings, Joe, Khattab, Krueger, Kumar, Kumar, Lin, Lucie J. Guetzoyan, Lynne M. Roberts, Modena, Nagamatsu, Nagaraju, Phoujdar, Prakash, Prakash, Prakash, Prasad, Ram, Rashad, Rashad, Robert A. Spooner, Sadana, Shaban, Shaban, Sheldrick, Sheldrick, Shibahara, Shishoo, Spooner, Thakur, Tonnar, Vorob'ev, Wang, Yarrow   +46 more
core   +1 more source

Coupled Extraction/Re-Extraction Method for the Chemical Speciation of Nickel in NaturalWaters [PDF]

, 2020
Chemical fractionation and speciation of metals species in natural waters and its relation with bioavailability have received increased attention in recent years.
Mendiguchía Martínez, Carolina, Moreno Aguilar, Carlos, Vergel Rodríguez, Cristina   +2 more
core   +2 more sources

Design, Synthesis and Study of Antibacterial and Antitubercular Activity of Quinoline Hydrazone Hybrids

Heterocyclic Communications, 2020
Emerging bacterial resistance is causing widespread problems for the treatment of various infections. Therefore, the search for antimicrobials is a never-ending task. Hydrazones and quinolines possess a wide variety of biological activities.
T G Shruthi, Subramanian Sangeetha, Eswaran Sumesh   +2 more
doaj   +1 more source

Crystal structure, Hirshfeld surface analysis and geometry optimization of 2-hydroxyimino-N-[1-(pyrazin-2-yl)ethylidene]propanohydrazide

Acta Crystallographica Section E: Crystallographic Communications, 2022
In the molecule of the title compound, C9H11N5O2, the oxime and hydrazide groups are situated in a cis-position in relation to the C—C bond linking the two functional groups.
Maksym O. Plutenko, Svitlana V. Shishkina, Oleg V. Shishkin, Vadim A. Potaskalov, Valentina A. Kalibabchuk   +4 more
doaj   +1 more source

(E)-4-Hydroxy-N′-(2-hydroxy-3,5-diiodobenzylidene)-3-methoxybenzohydrazide methanol monosolvate

Acta Crystallographica Section E, 2012
In the title compound, C15H12I2N2O4·CH3OH, the hydrazone molecule exists in an E conformation with respect to the C=N bond. The dihedral angle between the rings is 11.9 (2)°.
Xiao-Yan Li
doaj   +1 more source

Clean Grinding Technique: A Facile Synthesis and In Silico Antiviral Activity of Hydrazones, Pyrazoles, and Pyrazines Bearing Thiazole Moiety against SARS-CoV-2 Main Protease (M^pro)

Molecules, 2020
A novel series of some hydrazones bearing thiazole moiety were generated via solvent-drop grinding of thiazole carbohydrazide 2 with various carbonyl compounds.
Sraa Abu-Melha, Mastoura M. Edrees, Sayed M. Riyadh, Mohamad R. Abdelaziz, Abdo A. Elfiky, Sobhi M. Gomha   +5 more
doaj   +1 more source