Facts and fictions about polymorphism

AJ Cruz-Cabeza, SM Reutzel-Edens… - Chemical Society …, 2015 - pubs.rsc.org
We present new facts about polymorphism based on (i) crystallographic data from the
Cambridge Structural Database (CSD, a database built over 50 years of community …

Modeling polymorphic molecular crystals with electronic structure theory

GJO Beran - Chemical reviews, 2016 - ACS Publications
Interest in molecular crystals has grown thanks to their relevance to pharmaceuticals,
organic semiconductor materials, foods, and many other applications. Electronic structure …

Packing Problems: High Z′ Crystal Structures and Their Relationship to Cocrystals, Inclusion Compounds, and Polymorphism

KM Steed, JW Steed - Chemical Reviews, 2015 - ACS Publications
Generally speaking, molecular compounds have a strong tendency to have crystalline order
in the solid state. Amorphous materials do exist, of course, but they are rarely the most stable …

[PDF][PDF] Why don't we find more polymorphs?

SL Price - Acta Crystallographica Section B: Structural Science …, 2013 - journals.iucr.org
Crystal structure prediction (CSP) studies are not limited to being a search for the most
thermodynamically stable crystal structure, but play a valuable role in understanding …

Can computed crystal energy landscapes help understand pharmaceutical solids?

SL Price, DE Braun, SM Reutzel-Edens - Chemical Communications, 2016 - pubs.rsc.org
Computational crystal structure prediction (CSP) methods can now be applied to the smaller
pharmaceutical molecules currently in drug development. We review the recent uses of …

De Novo Determination of the Crystal Structure of a Large Drug Molecule by Crystal Structure Prediction-Based Powder NMR Crystallography

M Baias, JN Dumez, PH Svensson… - Journal of the …, 2013 - ACS Publications
The crystal structure of form 4 of the drug 4-[4-(2-adamantylcarbamoyl)-5-tert-butyl-pyrazol-1-
yl] benzoic acid is determined using a protocol for NMR powder crystallography at natural …

Inaccurate conformational energies still hinder crystal structure prediction in flexible organic molecules

C Greenwell, GJO Beran - Crystal Growth & Design, 2020 - ACS Publications
Crystal structure prediction driven by density functional theory has become an increasingly
useful tool for the pharmaceutical industry and others interested in understanding and …

Convergence properties of crystal structure prediction by quasi-random sampling

DH Case, JE Campbell, PJ Bygrave… - Journal of chemical …, 2016 - ACS Publications
Generating sets of trial structures that sample the configurational space of crystal packing
possibilities is an essential step in the process of ab initio crystal structure prediction (CSP) …

Overcoming the difficulties of predicting conformational polymorph energetics in molecular crystals via correlated wavefunction methods

C Greenwell, JL McKinley, P Zhang, Q Zeng, G Sun… - Chemical …, 2020 - pubs.rsc.org
Molecular crystal structure prediction is increasingly being applied to study the solid form
landscapes of larger, more flexible pharmaceutical molecules. Despite many successes in …

The potential of computed crystal energy landscapes to aid solid-form development

SL Price, SM Reutzel-Edens - Drug Discovery Today, 2016 - Elsevier
Highlights•Crystal structure prediction studies have been carried out with the pharmaceutical
industry.•Crystal energy landscapes can help to define solid form landscapes.•Crystal …