Resonance energies of some compounds containing nitrogen or oxygen

Ground States of Conjugated Molecules . X V . Bond Localization and Resonance Energies in Compounds Containing Nitrogen or Oxygen

T he heats o f form ation o f, and bon d lengths in, a num ber o f classical conjugated m olecu les contain ing nitrogen or oxygen have been calculated by the m eth od o f part X II o f this series. T he results im ply th a t the b on d s in com poun ds o f th is type can be regarded as localized . U sin g the bon d energies deduced in th is w ay, resonance energies are calcu lated for a num be...

Some nitrogen and sulfur containing compounds as chemotherapeutic agents.

detection of volatile compounds of medicinal plants with some nano-sorbents using modified or new methodologies and investigation of antioxidant activity of their methanolic extracts

in this work, a novel and fast method for direct analysis of volatile compounds (davc) of medicinal plants has been developed by holding a filament from different parts of a plant in the gc injection port. the extraction and analysis of volatile components of a small amount of plant were carried out in one-step without any sample preparation. after optimization of temperature, extraction time a...

N1,N1,N2,N2-Tetramethyl-N1,N2-bis(sulfo)ethane-1,2-diaminium chloride as a highly efficient catalyst for synthesis of some nitrogen- and oxygen-containing heterocyclic compounds

In this research, a Brønsted acidic ionic liquid namely N1,N1,N2,N2-tetramethyl-N1,N2-bis(sulfo)ethane-1,2-diaminium chloride {[TMBSED][Cl]2} was employed as a highly efficient catalyst for the solvent-free production of some nitrogen- and oxygen-containing heterocyclic compounds including: (i) polyhydroquinolines (from arylaldehydes, dimedone, β-ketoesters and ammonium acetate), (ii) 3,4-dihyd...

ORGANIC CHEMISTRY Organic Compounds containing Nitrogen