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Topological characterization of crystalline ice structures from coordination sequences

AutorHerrero, Carlos P. ; Ramírez, Rafael
Fecha de publicación2013
EditorRoyal Society of Chemistry (Great Britain)
CitaciónPhysical Chemistry Chemical Physics 15(39): 16676-16685 (2013)
ResumenTopological properties of crystalline ice structures are studied by considering ring statistics, coordination sequences, and topological density of different ice phases. The coordination sequences (number of sites at topological distance k from a reference site) have been obtained by direct enumeration until at least 40 coordination spheres for different ice polymorphs. This allows us to study the asymptotic behavior of the mean number of sites in the k-th shell, Mk, for high values of k: Mk ∼ ak2, a being a structure-dependent parameter. Small departures from a strict parabolic dependence have been studied by considering first and second differences of the series {Mk} for each structure. The parameter a ranges from 2.00 for ice VI to 4.27 for ice XII, and is used to define a topological density for these solid phases of water. Correlations between such topological density and the actual volume of ice phases are discussed. Ices Ih and Ic are found to depart from the general trend in this correlation due to the large void space in their structures. © 2013 The Owner Societies.
DescripciónEl pdf del artículo es la versión post-print: arXiv:1307.4611
Versión del editorhttp://dx.doi.org/10.1039/C3CP52167B
URIhttp://hdl.handle.net/10261/95682
DOI10.1039/C3CP52167B
Identificadoresdoi: 10.1039/C3CP52167B
issn: 1463-9076
e-issn: 1463-9084
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