After discovery of fullerenes there were offered a wide variety of ways of their practical use. Nowadays a lot of patents in the field of fullerene chemistry concern use of fullerenes and nanotubes in semiconductor and nanoeletronic devices, e.g. photodiodes, transistors, sun batteries. Due to high electronegativity, fullerene C60 can easily form charge-transfer complexes in which it acts as ac...

Motivation. Eigenvalue of bonding orbital-connecting matrix is a good descriptor for expressing the relative bond energies of C-C and C-H bonds in alkanes. Its application can be extended to the Monoderivatives of Hydrocarbon. Method. Multivariable models were developed to predict the densities of alkanes and monosubstituted alkanes. These compounds are of special interest to petroleum or chemi...

JChemEd.chem.wisc.edu • Vol. 80 No. 3 March 2003 • Journal of Chemical Education 279 Part I of this series traced the origins of the electronegativity concept in the writings of Amedeo Avogadro and Jöns Jacob Berzelius in the period 1809–1813 (1). Avogadro’s approach—based on the concepts of acidity and alkalinity as generalized relative properties, the use of contact or Volta potentials as a m...

Changes in the electronic transition energies and redox potentials because of metal substitution in bacteriochlorophyll a justify the recently suggested correlation between electronegativity øM, covalent radius, and an effective charge, QM, at the metal atom center. A simple electrostatic theory in which QM modifies the energies of the frontier molecular orbitals by Coulombic interactions with ...

Forming a four-component compound from the first 103 elements of the periodic table results in more than 1012 combinations. Such a materials space is intractable to high-throughput experiment or first-principle computation. We introduce a framework to address this problem and quantify how many materials can exist. We apply principles of valency and electronegativity to filter chemically implaus...