Organosilicon molecules such as silicon carbide (SiC), dicarbide (c-SiC2), tricarbide (c-SiC3), and tetracarbide (SiC4) represent basic molecular building blocks connected to the growth of silicon-carbide dust grains in outflow circumstellar envelopes carbon-rich asymptotic giant branch (AGB) stars. Yet, fundamental mechanisms formation carbides early processes that initiate coupling silicon–ca...

Organosilicon molecules such as silicon carbide (SiC), dicarbide (c-SiC2), tricarbide (c-SiC3), and tetracarbide (SiC4) represent basic molecular building blocks connected to the growth of silicon-carbide dust grains in outflow circumstellar envelopes carbon-rich asymptotic giant branch (AGB) stars. Yet, fundamental mechanisms formation carbides early processes that initiate coupling silicon–ca...

Amorphous silicon oxycarbide (SiOC) is of great technological interest. However, its atomic-level structure is not well understood. Using density functional theory calculations, we show that the clustering tendency of C atoms in SiOC is extremely sensitive to hydrogen (H): without H, the C-C interaction is attractive, leading to enrichment of aggregated SiC4 tetrahedral units; with hydrogen, th...

The application of graphs in chemical and molecular structures has exponentially increased during the last few years. Topological indices facilitate collection beneficial information provide an approach to understanding properties structure by providing about algebraic graphs. Let G be a graph with u -vertices id="M2"> <...