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 3
Arrrangement of ion pairs (the green ball and the red ball represent the chloride ion and the centroid of the dihydropyrimidinium cation part, respectively) in (a) A form (I) and (b) A form (II). The blue arrows show the direction of the cation–anion chain.

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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