Polymorphism in two biologically active dihydropyrimidinium hydrochloride derivatives: quantitative inputs towards the energetics associated with crystal packing

Panini, P.; Venugopala, K.N.; Odhav, B.; Chopra, D.

doi:10.1107/S2052520614006209

Acta Crystallographica Section B
Acta Crystallographica
Section B STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS

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Figure 2
Arrangement of the dihydropyrimidinium cations (different colours of C atoms represent the different cationic parts) around the chloride ion in (a) A form (I); symmetry codes: (i) x, y, z; (ii) $[-x+{1\over 2}, -y+{1\over 2}, -z+1]$ ; (iii) $[-x+{1\over 2}, -y+{3\over 2}, -z+1]$ ; (iv) $[-x+{1\over 2}, -y+{1\over 2}, -z+1]$ ; (b) A form (II); symmetry codes: (i) x, y, z; (ii) -x+2, -y, -z; (iii) -x+1, -y, -z; (iv) x, y-1, z-1.

STRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS

ISSN: 2052-5206

Volume 70| Part 4| July 2014| Pages 681-696

doi:10.1107/S2052520614006209

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