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   Use of Structure Codes (Counts) For Computing Topological Indices of Carbon Nanotubes: Sadhana (Sd) Index of Phenylenes and Its Hexagonal Squeezes  
نویسنده John P. E. ,Aziz S. ,Khadikar P. V.
منبع Iranian Journal Of Mathematical Chemistry - 2010 - دوره : 1 - شماره : 1 - صفحه:91 -94
چکیده    Structural codes vis-a-vis structural counts, like polynomials of a molecular graph, are important in computing graph-theoretical descriptors which are commonly known as topological indices. these indices are most important for characterizing carbon nanotubes (cnts). in this paper we have computed sadhana index (sd) for phenylenes and their hexagonal squeezes using structural codes (counts). sadhana index is a very simple w-sz-pi-type topological index obtained by summing the number of edges on both sides of the elementary cuts of benzenoid graphs. it has the similar discriminating power as that of the weiner (w)-, szeged (sz)-, and pi-indices.
کلیدواژه Sadhana Index ,Graph-Theoretical Descriptor ,Structural Codes ,Structural Counts Phenylene ,Hexagonal Squeeze ,Benzenoids.
آدرس Technische Universitat Iimenau, Fakulat For Mathematik And Naturwissenchaften, Institut For Mathematik, Germany, Nstitute Of Engineering And Technology, Department Of Applied Sciences (Mathematics), India, Laxmi Fumigation And Pest Control, Research Division, India
پست الکترونیکی pvkhadikar@rediffmail.com

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