digonal

digonal

(daɪˈɡəʊnəl)
adj
(Mathematics) maths of or relating to a symmetry operation in which the original figure is reconstructed after a 180° turn about an axis
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References in periodicals archive ?
Endereco do autor: Digonal Paraguay, 257--Santiago de Chile, Chile.
(57) The co-existence of digonal, trigonal-planar, and tetrahedral co-ordination geometries together with the presence of secondary mercury-sulphur interactions are common features in the chemistry of Hg(II) thiolates.
In ethane ([H.sub.3C]-C[H.sub.3]) the connectivity is tetrahedral, in ethylene ([H.sub.2]CC[H.sub.2]) it is trigonal, and in acetylene (HCCH) it is digonal. Clicking on the desired type of connection allows the user to build any conceivable molecule.