Results 51 to 60 of about 738 (133)

Fate of the open-shell singlet ground state in the experimentally accessible acenes: a quantum Monte Carlo study [PDF]

open access: yes, 2018
By means of the Jastrow correlated antisymmetrized geminal power (JAGP) wave function and quantum Monte Carlo (QMC) methods, we study the ground state properties of the oligoacene series, up to the nonacene.
Casula, Michele, Dupuy, Nicolas
core   +2 more sources

HOMA Index Establishes Similarity to a Reference Molecule. [PDF]

open access: yesJ Chem Inf Model, 2023
Dobrowolski JC, Ostrowski S.
europepmc   +1 more source

Quantum Interference, Graphs, Walks, and Polynomials

open access: yes, 2018
In this paper, we explore quantum interference in molecular conductance from the point of view of graph theory and walks on lattices. By virtue of the Cayley-Hamilton theorem for characteristic polynomials and the Coulson-Rushbrooke pairing theorem for ...
Estrada, Ernesto   +3 more
core   +1 more source

Observation of Hybrid-Order Topological Pump in a Kekule-Textured Graphene Lattice

open access: yes, 2023
Thouless charge pumping protocol provides an effective route for realizing topological particle transport. To date, the first-order and higher-order topological pumps, exhibiting transitions of edge-bulk-edge and corner-bulk-corner states, respectively ...
Fan, Xiying   +5 more
core  

The Structure of 4-Clusters in Fullerenes [PDF]

open access: yes, 2018
Fullerenes can be considered to be either molecules of pure carbon or the trivalent plane graphs with all hexagonal and (exactly 12) pentagonal faces that models these molecules.
Edmond, Jennifer
core   +1 more source

Toward a definition of valence as a quantity (IUPAC Technical Report) [PDF]

open access: yes
Valence has a rich history in chemistry, as a bonding concept, in terms of quantitative context, and as a true quantity. In the latter, a survey preceding this project revealed differing perceptions of valence values and helped formulate candidate ...
Armelao, Lidia   +4 more
core   +1 more source

Atlas Kekuléovih valentnih struktura Buckminsterfulerena [PDF]

open access: yes, 2005
The 12,500 Kekulé valence structures of Buckminsterfullerene C60, of which only 158 are symmetry distinct, show large variation in their forms and characteristics.
Damir Vukičević   +2 more
core   +1 more source

Kekulé Structures of Fullerene C70 [PDF]

open access: yes, 2006
Despite that, besides Buckminsterfullerene C60, fullerene C70 is the next most stable structure, there are considerable differences in structural properties of these two most common fullerenes. The paper reports on numerous mathematical properties of the
Damir Vukičević, Milan Randić
core   +1 more source

Engineering Soluble Diketopyrrolopyrrole Chromophore Stacks from a Series of Pd(II)-Based Ravels. [PDF]

open access: yesAngew Chem Int Ed Engl, 2023
Regeni I   +6 more
europepmc   +1 more source

Topological Ring-Currents in Condensed Benzenoid Hydrocarbons [PDF]

open access: yes, 2008
Topological ring-currents are defined as being pi-electron ring-current intensities in condensed, benzenoid hydrocarbons that (i) are calculated by the simplest Hückel-London-Pople- McWeeny method, (ii) are based on a molecular geometry of regular ...
R. B. Mallion
core   +1 more source

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