Results 101 to 110 of about 489,454 (164)
Some of the next articles are maybe not open access.
International Journal of Modern Physics B
In a graph [Formula: see text], the temperature [Formula: see text] of a vertex [Formula: see text] is defined as [Formula: see text], where n is the order of G and [Formula: see text] is the valency/degree of x.
Sakander Hayat, Jia-bao Liu
semanticscholar +1 more source
In a graph [Formula: see text], the temperature [Formula: see text] of a vertex [Formula: see text] is defined as [Formula: see text], where n is the order of G and [Formula: see text] is the valency/degree of x.
Sakander Hayat, Jia-bao Liu
semanticscholar +1 more source
, 2020
The status or transmission of a vertex u in a graph G is defined by σ ( u ) = ∑ v ∈ V d ( u , v ) , where V is the set of vertices of the graph G, and d ( u , v ) stands for the distance between u and v in G.
A. Doley, J. Buragohain, A. Bharali
semanticscholar +1 more source
The status or transmission of a vertex u in a graph G is defined by σ ( u ) = ∑ v ∈ V d ( u , v ) , where V is the set of vertices of the graph G, and d ( u , v ) stands for the distance between u and v in G.
A. Doley, J. Buragohain, A. Bharali
semanticscholar +1 more source
Journal of the American Chemical Society
Recently, the interest in nonbenzenoid hydrocarbons has resurged, focusing on the replacement of two benzenoid hexagons with a pentagon/heptagon pair, which has led to abundant azulenoid hydrocarbons.
Akihito Konishi +7 more
semanticscholar +1 more source
Recently, the interest in nonbenzenoid hydrocarbons has resurged, focusing on the replacement of two benzenoid hexagons with a pentagon/heptagon pair, which has led to abundant azulenoid hydrocarbons.
Akihito Konishi +7 more
semanticscholar +1 more source
A Periodic Table for Benzenoid Hydrocarbons
1990The formulas for all benzenoid hydrocarbons are found in Table PAH6 which has x,y-coordinates of (d s , NIc). Recursive construction of this table was accomplished using an aufbau principle. This table complies to a sextet rule analogous to the octet rule for the periodic table of elements, and d s is analogous to the outer-shell electronic ...
openaire +1 more source
Conjugated circuits in benzenoid hydrocarbons
Journal of Molecular Structure: THEOCHEM, 1989Abstract A proof is provided for the previously known result that all conjugated circuits in a benzenoid hydrocarbon are of the size 4m + 2.
I. Gutman, S.J. Cyvin
openaire +1 more source
Enumeration and classification of benzenoid hydrocarbons
Journal of Molecular Structure: THEOCHEM, 1990New principles in the enumeration of benzenoid systems are reported. They imply a class of benzenoids referred to as special catacondensed systems. The techniques are applied to catacondensed (branched) benzenoids of regular trigonal (D3h) symmetry. The results of enumeration up to h = 25 are given.
R. Tošić +3 more
openaire +1 more source
Mathematics of Periodic Tables for Benzenoid Hydrocarbons
Journal of Chemical Information and Modeling, 2007AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
openaire +3 more sources
Characterization of all-benzenoid hydrocarbons
Journal of Molecular Structure: THEOCHEM, 1991Abstract A benzenoid hydrocarbon is said to be all-benzenoid if its Clar formula contains only aromatic sextets and no double bonds. It is shown that the all-benzenoid hydrocarbons are characterized by the absence of fissures and coves in their perimeters.
I. Gutman, D. Babić
openaire +1 more source
Angewandte Chemie
High-spin organic radicals are notable for their unique optical, electronic, and magnetic properties, but synthesizing stable high-spin systems is challenging due to their inherent reactivity.
Lei Wang +9 more
semanticscholar +1 more source
High-spin organic radicals are notable for their unique optical, electronic, and magnetic properties, but synthesizing stable high-spin systems is challenging due to their inherent reactivity.
Lei Wang +9 more
semanticscholar +1 more source
Zeitschrift für Naturforschung A, 2019
In this paper, we show that both the general product-connectivity index χα and the general sum-connectivity index χαs\({}^{s}{\chi_{\alpha}}\) are closely related molecular descriptors when the real number α is in some interval.
Deqiang Chen
semanticscholar +1 more source
In this paper, we show that both the general product-connectivity index χα and the general sum-connectivity index χαs\({}^{s}{\chi_{\alpha}}\) are closely related molecular descriptors when the real number α is in some interval.
Deqiang Chen
semanticscholar +1 more source