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Figure 2
Comparative views of the seven-membered rings in 1 (left) and 1H+ (right) in the salt C11H13N2+·PF6− (Blake et al., 1991BB2).

Journal logoCRYSTALLOGRAPHIC
COMMUNICATIONS
ISSN: 2056-9890
Volume 73| Part 5| May 2017| Pages 647-650
https://doi.org/10.1107/S2056989017004972
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