TTR Collection
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The program package for multipurpose geometrical and topological analysis of crystal structures

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TTR Collection

     Starting from April 2011, TOPOS includes the TTR collection (Topological Types Relations). This collection is based on the TTO collection and lists all ways of transformation from one net to another that are realized in crystal structures. If for a given crystal structure there are at least two possible representations in the TTO collection, and these representations have different topology, a pair of the corresponding nets appears in the TTR collection. In other words, these nets can be transformed to each other if the structure groups are chosen in different ways in the initial crystal structure. For example a diamond (dia) net can be transformed to a srs net by an appropriate choice of dimers (edges) in dia and matching them to srs vertices.

     The TTR collection consists of .ttr files that are allocated in the /TTO directory.