Results 71 to 80 of about 70,902 (254)

Azine polymers and process for preparing the same Patent [PDF]

open access: yes, 1970
Synthesis of azine polymers for heat shields by azine-aromatic aldehyde ...
Dalelio, G. F.
core   +1 more source

Novel lithium Schiff-base cluster complexes as electron injectors: synthesis, crystal structure, thin film characterisation and their performance in OLEDs [PDF]

open access: yes, 2012
This journal is © The Royal Society of Chemistry 2012A set of novel lithium Schiff base cluster compounds has been synthesised and characterised for the first time and tested as electron injectors in OLED devices.
Alexander J. Blake   +48 more
core   +1 more source

Synthesis and Biological Evaluation of New N,N′-Bis(1-substituted-ethylidene)-ethane1,2-diamine and Their Acetyl and Trifluoroacetyl Derivatives as Cytotoxic and Antimicrobial Agents

open access: yesJournal of Chemistry, 2013
Several Schiff bases 2 have been prepared by the condensation of various methyl ketones 1 with 1,2-ethylenediamine. Subsequent acylation of these Schiff bases with trifluoroacetic anhydride in THF yields the corresponding trifluoroacetyl derivatives 3 ...
Khalid A. Khan   +2 more
doaj   +1 more source

(E,E)-N1,N2-Bis(2,6-di­fluoro­benzyl­idene)ethane-1,2-di­amine. [PDF]

open access: yes, 2011
The asymmetric unit of the title compound, C16H12F4N2, comprises half of the potentially bidentate Schiff base ligand, with an inversion centre located at the mid-point of the central C—C bond.
Clegg, W.   +3 more
core   +4 more sources

Overview of Schiff Bases

open access: yes, 2023
Schiff bases, which were first obtained by the German chemist H. Schiff in 1864, are used in the paint industry, polymer technology, pharmaceutical industry, medicine, agriculture, preparation of rocket fuel, and explanation of biological events, and in many other areas due to the groups in their structures. This chapter will be a guide that contains a
openaire   +2 more sources

Schiff Bases Derived from Pyridoxal 5′-Phosphate and 2-X-Phenylamine (X = H, OH, SH): Substituent Effects on UV-Vis Spectra and Hydrolysis Kinetics

open access: yesMolecules
Schiff bases are compounds that are widely distributed in nature and have practical value for industry and biomedicine. Another important use of Schiff bases is identifying metal ions and different molecules, including proteins.
Maksim N. Zavalishin   +2 more
doaj   +1 more source

The Frenet Serret Description of Gyroscopic Precession [PDF]

open access: yes, 1993
The phenomenon of gyroscopic precession is studied within the framework of Frenet-Serret formalism adapted to quasi-Killing trajectories. Its relation to the congruence vorticity is highlighted with particular reference to the irrotational congruence ...
B. R. Iyer   +15 more
core   +3 more sources

Introduction to Schiff Base

open access: yes, 2023
When any primary amine reacts with an aldehyde or a ketone under specific conditions, Schiff bases are formed. The general structure of Schiff base is R2C∙NR′ and is considered as a subclass of imines which is commonly used as a synonym for azomethine.
openaire   +2 more sources

Synthesis, Characterization and Elucidation of the Structure–Activity Relationship of Heteroatom Donor Ligands and Their Complexes Derived From Substituted Dithiocarbazate Derivatives [PDF]

open access: yes, 2008
Four new substituted dithiocarbazate ligands [S-napthalen-2-ylmethyldithiocarbazate (SNMDTC), S-quinolin-2-ylmethyl-dithiocarbazate (SQ2MDTC), Sbenzyl- N-benzyldithiocarbazate (SBNBDTC) and S-methyl-N-benzyldithiocarbazate (SMNBDTC)], eight series of ...
How, Fiona Ni Foong
core  

Dialkylaluminium 2-imidazolylphenolates: Synthesis, characterization and ring-opening polymerization behavior towards lactides [PDF]

open access: yes, 2013
The stoichiometric reaction of the 2-imidazolylphenols (L1–L9) with the trialkylaluminium reagents AlR₃ (R = Me, Et and iBu), afforded the corresponding dialkylaluminium 2-imidazolylphenolate complexes [R₂Al(L1–L9)] (C1–C11), which were characterized by ...
Redshaw, Carl   +4 more
core   +1 more source

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