Iranian Journal of Mathematical ChemistryIranian Journal of Mathematical Chemistry
http://ijmc.kashanu.ac.ir/
Wed, 18 Jul 2018 07:26:23 +0100FeedCreatorIranian Journal of Mathematical Chemistry
http://ijmc.kashanu.ac.ir/
Feed provided by Iranian Journal of Mathematical Chemistry. Click to visit.Rhombellanic Crystals and Quasicrystals
http://ijmc.kashanu.ac.ir/article_63663_5999.html
Design of some crystal and quasicrystal networks, based on rhombellane tiling,is presented. [1,1,1]Propellane,is a synthesized organic molecule; its hydrogenated form, the bicyclo[1.1.1]pentane,may be represented by the complete bipartite graph K2,3 which is the smallest rhombellane. Topology of translational and radial structures involving rhombellanes is described in terms of vertex symbol, connectivity sequence, ring sequence and map operations relating structures to their seeds. It is shown, by alternating sum of ranked substructures, that radial structures represent complex constructions of higher rank. Basic properties of rhombellanes, coloring included, are outlined.Fri, 31 Aug 2018 19:30:00 +0100One-Alpha Descriptor
http://ijmc.kashanu.ac.ir/article_65124_5999.html
Recently, one-two descriptor has been defined and it has been shown that it is a good predictor of the heat capacity at P constant (CP) and of the total surface area (TSA). In this paper, we analyze its generalizations by replacing the value 2 by arbitrary positive value . We show that these analyses may be on interest, because even good predictions of CP and TSA can be slightly improved. Furthermore, it can be expected that this more general descriptor can find a wider range of application than the original one. The extremal values of trees have been found for all values of .Fri, 31 Aug 2018 19:30:00 +0100An application of geometrical isometries in non-planar molecules
http://ijmc.kashanu.ac.ir/article_45090_0.html
In this paper we introduce a novel methodology to transmit the origin to the center of a polygon in a molecule structure such that the special axis be perpendicular to the plane containing the polygon. The mathematical calculation are described completely and the algorithm will be showed as a computer program.Tue, 18 Apr 2017 19:30:00 +0100Trees with the greatest Wiener and edge-Wiener index
http://ijmc.kashanu.ac.ir/article_48335_0.html
The Wiener index W and the edge-Wiener index W_e of G are defined as the sum of distances between all pairs of vertices in G and the sum of distances between all pairs of edges in G, respectively. In this paper, we identify the four trees, with the first through fourth greatest Wiener and edge-Wiener index among all trees of order n ≥ 10.Tue, 11 Jul 2017 19:30:00 +0100