view article
Figure 8
Displacive correlations along the molecular chains in TPA. (a) Plots of the correlations amongst components of displacements in the ab plane of polymorph (I), in a polar plot in which the angle, θ, gives the direction of the displacement component to the a axis and the radius gives the strength of the correlation, so both axes give correlation magnitudes. This plot shows that correlations are strong in the [{\bf a}+{\bf b}] direction, and weak transverse to this. (c) Shows a schematic picture of real space for the polymorph, showing the direction of the chains, with the [{\bf a}] and [{\bf b}] axes oriented the same as in (a). (b) and (d) give the same results for polymorph (II); the magnitudes are similar, although the shapes slightly different.

Journal logoSTRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS
ISSN: 2052-5206
Volume 73| Part 1| February 2017| Pages 112-121
https://doi.org/10.1107/S2052520616018801
Follow Acta Cryst. B
Sign up for e-alerts
E-alerts
Follow Acta Cryst. on Twitter
Twitter
Follow us on facebook
Facebook
Sign up for RSS feeds
RSS