Browsing by Author "Kamali, Naghmeh"
Now showing items 1-7 of 7
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Application of ball milling for highly selective mechanochemical polymorph transformations
Kamali, Naghmeh; Gniado, Katarzyna; McArdle, Patrick; Erxleben, Andrea (American Chemical Society, 2018-06-07)Milling is an important secondary processing technique in the manufacture of pharmaceuticals, primarily used as a particle size reduction process. p-Aminobenzoic acid (PABA), m-aminobenzoic acid (MABA), o-aminobenzoic acid ... -
Green solvent free methods for active pharmaceutical ingredient polymorph control
Kamali, Naghmeh (NUI Galway, 2018-09-28)Polymorphism control of pharmaceutical compounds is a fundamental issue in pharmaceutical companies. Solution crystallization is a well-known pharmaceutical process. There are a variety of factors that can influence the ... -
Hydrogen bonding networks and solid-state conversions in benzamidinium salts
Kamali, Naghmeh; Aljohani, Marwah; McArdle, Patrick; Erxleben, Andrea (2015-07-14)Ten benzamidinium salts of carboxylic acids, amides, and sulfonamides have been crystallized from solution. Single-crystal X-ray analyses revealed various hydrogen bonding motifs which ate discussed in terms of supramolecular ... -
Sulfamerazine: Understanding the influence of slip planes in the polymorphic phase transformation through X-ray crystallographic studies and ab initio lattice dynamics
Pallipurath, Anuradha R.; Skelton, Jonathan M.; Warren, Mark R.; Kamali, Naghmeh; McArdle, Patrick; Erxleben, Andrea (American Chemical Society, 2015-08-28)Understanding the polymorphism exhibited by organic active-pharmaceutical ingredients (APIs), in particular the relationships between crystal structure and the thermodynamics of polymorph stability, is vital for the ... -
Sulfamerazine: understanding the influence of slip planes in the polymorphic phase transformation through x-ray crystallographic studies andab initiolattice dynamics
Pallipurath, Anuradha R.; Skelton, Jonathan M.; Warren, Mark R.; Kamali, Naghmeh; McArdle, Patrick; Erxleben, Andrea (American Chemical Society (ACS), 2015-10-05)Understanding the polymorphism exhibited by organic active-pharmaceutical ingredients (APIs), in particular the relationships between crystal structure and the thermodynamics of polymorph stability, is vital for the ... -
Unexpected effects of catalytic amounts of additives on crystallization from the gas phase: Depression of the sublimation temperature and polymorph control
Kamali, Naghmeh; Erxleben, Andrea; McArdle, Patrick (American Chemical Society, 2016-04-11)Sublimation of carbamazepine, piracetam, diflunisal, and p-minobenzoic acid is enhanced by the presence of additives. Temperature reductions and polymorph control have been observed. Sublimation of carbamazepine containing ... -
Use of sublimation catalysis and polycrystalline powder templates for polymorph control of gas phase crystallization
Kamali, Naghmeh; O’Malley, Ciaran; Mahon, Mary F.; Erxleben, Andrea; McArdle, Patrick (American Chemical Society, 2018-05-08)In pursuit of a solvent-free green alternative to solution-based processes, we have applied the combined use of catalytic additives and polycrystalline powder templates for polymorph control of gas phase crystallization ...