نتایج جستجو برای: charge transfer complexes

تعداد نتایج: 542536  

Journal: :Bulletin of the Chemical Society of Japan 1953

Interaction of pure and Vn-doped (8, 0), (12, 0) and (16, 0) boron nitride nanotubes with CO molecules was studied using B3LYP/6-311++G(d) theoretical level. Substituting V instead of B atoms, increased the reactivity of nanotube. From the results, the complex stability depends on the direction and the number of the CO molecules interacted with the nanotube. In this work, the quantum...

Journal: :iranian journal of analytical chemistry 2014
azar bagheri gh.

spectrophotometric and electrochemical studies were successfully used in quantitative analysis of amitriptyline hydrochloride (ath) and nortriptyline hydrochloride (nth). conductometric titration were carried out in equeous solution using iodide and dopamine and serotonine as titrant. two new methods using spectrophotometry are dascribed for the determination of (ath) and (nth) with potassium b...

2012
Tzong-Yuan Lin Tobias Werther Jae-Hun Jeoung Holger Dobbek

Background: Toluene dioxygenase reductase converts the redox equivalents of NADH under oxic conditions. Results: Reduced reductase forms a stable complex with NAD that shows slower electron transfer to dioxygen. Conclusions: Charge-transfer complex formation regulates the reactivity of the reductase. Significance: Charge-transfer complexes between flavins and nicotinamides are abundant and like...

Journal: :Molecules 2006
Lakhemici Kaboub Slimane Fradj Abdelkrim Gouasmia

We report the synthesis and properties of eight new tetrathiafulvalene (TTF) derivatives containing two different functionalities, prepared with the aim of obtaining stable organic materials. The four acetoxyphenyl- and four hydroxyphenyl TTFs were synthesized via Wittig-type condensations. The electrochemical properties of these redox-active molecules were studied by cyclic voltammetry. Charge...

Journal: :Nano letters 2014
T Choi M Badal S Loth J-W Yoo C P Lutz A J Heinrich A J Epstein D G Stroud J A Gupta

The magnetic properties of molecular structures can be tailored by chemical synthesis or bottom-up assembly at the atomic scale. We used scanning tunneling microscopy to study charge and spin transfer in individual complexes of transition metals with the charge acceptor, tetracyanoethylene (TCNE). The complexes were formed on a thin insulator, Cu2N on Cu(100), by manipulation of individual atom...

Journal: :The Yale Journal of Biology and Medicine 1961
J. R. Cooper

After a most refreshing discussion of the generation of energy through ATP and the oxidative cycle, the author outlines the methods of quantitating electron donor or electron acceptor molecules. He briefly considers the biological role of electromagnetic coupling and semiconduction in electronic mobility. However, he deals more extensively with charge transfer which "may be one of the most impo...

In this paper, ab initio calculations were performed on the ternary complex formed by HB(CO)2, XCN (X = Cl, Br) and YF (Y = Li, H, Cl). In these complexes boron act as a non-classical electron donor to form a unconventional halogen bond. The cooperative effect between the B•••X halogen bond and lithium/hydrogen/halogen bond was investigated. The calculated results show that the B•••X and N•••Y ...

Journal: :Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy 2011
Moamen S Refat Hosam A Saad Abdel Majid A Adam

A two new charge transfer complexes formed from the interactions between o-tolidine (o-TOL) and picric (PA) or chloranilic (CA) acids, with the compositions, [(o-TOL)(PA)(2)] and [(o-TOL)(CA)(2)] have been prepared. The (13)C NMR, (1)H NMR, (1)H-Cosy, and IR show that the charge-transfer chelation occurs via the formation of chain structures O-H⋯N intermolecular hydrogen bond between 2NH(2) gro...

Journal: :The Journal of chemical physics 2013
Benjamin Freyer Flavio Zamponi Vincent Juvé Johannes Stingl Michael Woerner Thomas Elsaesser Majed Chergui

The transient electronic and molecular structure arising from photoinduced charge transfer in transition metal complexes is studied by X-ray powder diffraction with a 100 fs temporal and atomic spatial resolution. Crystals containing a dense array of Fe(II)-tris(bipyridine) ([Fe(bpy)3](2 +)) complexes and their [Formula: see text] counterions display pronounced changes of electron density that ...

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