Electron Transfer from Polycyclic Aromatic Hydrocarbons to Menadione

Abstract

In chloroform, electron transfer from polycyclic aromatic hydrocarbons to menadione induces an orange-red color. The observed very small equilibrium constants and the positive heats of formation strongly suggest that the interaction is mainly, sometimes entirely, contactual. The naphtacene complex is an exception. The solid-liquid binary diagrams investigated do not show formation of solid molecular compounds.Elektronenuberfuhrung von polyzyklischen, aromatischen Kohlenwasserstoffen auf Menadion ruft in Chloroform eine orange-rote Fsrbung hervor. Die sehr kleinen Gleichgewichtskonstanten sowie die Bildungswsrmen legen nahe, Kontaktwechselwirkung als hauptskhliche, in einigen F5llen als einzige Ursache anzunehmen. Eine Ausnahme bildet der Naphthalinkomplex. Eine Untersuchung der binaren Zustandsdiagramme fest-fliissig zeigte keine Anzeichen fur das Auftreten fester Molekiilverbindungen.

Increasing the Efficacy of Seproxetine as an Antidepressant Using Charge–Transfer Complexes

“…The new broad absorption band reported for mixes of the reduced form of flavin mononucleotide (FMNH2) and (FMN) was attributed to the creation of charge–transfer complexes [ 21 ]. 2-methyl-1,4-naphthoquinone, also known as vitamin K3, used as a synthetic substitute for K1, o-quinone adrenochrome, and many other biologically important quinones have substantial electron donor complexing capacity [ 22 ].…”