Acta Crystallographica Section E
Acta Crystallographica
Section E
CRYSTALLOGRAPHIC COMMUNICATIONS
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Figure 3
Residual electron density in the planes through C2
A
, C4
A
and C8
AA
(top) and C2
B
, C4
B
and C4
AB
(bottom); contour lines are drawn at 0.2 e Å
−3
. Covalent bonds in the heterocyclic cations clearly show up as local density maxima.
CRYSTALLOGRAPHIC
COMMUNICATIONS
ISSN: 2056-9890
Volume 77
|
Part 6
|
June 2021
|
Pages 629-633
https://doi.org/10.1107/S2056989021004989
Open
access
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