ROY revisited, again: the eighth solved structure

Melissa Tan, Alexander G. Shtukenberg, Shengcai Zhu, Wenqian Xu, Eric Dooryhee, Shane M. Nichols, Michael Ward, Bart Kahr, Qiang Zhu

Research output: Contribution to journalArticle

Abstract

X-ray powder diffraction and crystal structure prediction (CSP) algorithms were used in synergy to establish the crystal structure of the eighth polymorph of 5-methyl-2-[(2-nitrophenyl)amino]-3-thiophenecarbonitrile (ROY), form R05. R05 crystallizes in the monoclinic space group P21 with lattice parameters a = 11.479(4) Å, b = 11.030(1) Å, c = 10.840(6) Å, β = 118.23(1)°. This is both the first acentric ROY polymorph, and the first with Z′ > 1. The torsion angles defined by the S-C-N-C atom sequence of each molecule in the asymmetric unit (R05-1 and R05-2) are 44.9° and −34.0°. These values are between those previously determined for the red and orange forms of ROY. The crystal packing and intermolecular interactions in R05 are explained herein through Hirshfeld surface analysis and an updated energy stability ranking is determined using computational methods. Although the application of CSP was critical to the structure solution of R05, energy stability rankings determined using a series of DFT van der Waals (vdW)-inclusive models substantially differ from experiment, indicating that ROY polymorphism continues to be a challenge for CSP.

Original languageEnglish (US)
Pages (from-to)477-491
Number of pages15
JournalFaraday Discussions
Volume211
DOIs
StatePublished - Jan 1 2018

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Crystal structure
Polymorphism
crystal structure
ranking
predictions
polymorphism
Surface analysis
Computational methods
Discrete Fourier transforms
Torsional stress
X ray powder diffraction
Lattice constants
torsion
lattice parameters
Atoms
Crystals
Molecules
energy
diffraction
crystals

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Tan, M., Shtukenberg, A. G., Zhu, S., Xu, W., Dooryhee, E., Nichols, S. M., ... Zhu, Q. (2018). ROY revisited, again: the eighth solved structure. Faraday Discussions, 211, 477-491. https://doi.org/10.1039/c8fd00039e

ROY revisited, again : the eighth solved structure. / Tan, Melissa; Shtukenberg, Alexander G.; Zhu, Shengcai; Xu, Wenqian; Dooryhee, Eric; Nichols, Shane M.; Ward, Michael; Kahr, Bart; Zhu, Qiang.

In: Faraday Discussions, Vol. 211, 01.01.2018, p. 477-491.

Research output: Contribution to journalArticle

Tan, M, Shtukenberg, AG, Zhu, S, Xu, W, Dooryhee, E, Nichols, SM, Ward, M, Kahr, B & Zhu, Q 2018, 'ROY revisited, again: the eighth solved structure', Faraday Discussions, vol. 211, pp. 477-491. https://doi.org/10.1039/c8fd00039e
Tan M, Shtukenberg AG, Zhu S, Xu W, Dooryhee E, Nichols SM et al. ROY revisited, again: the eighth solved structure. Faraday Discussions. 2018 Jan 1;211:477-491. https://doi.org/10.1039/c8fd00039e
Tan, Melissa ; Shtukenberg, Alexander G. ; Zhu, Shengcai ; Xu, Wenqian ; Dooryhee, Eric ; Nichols, Shane M. ; Ward, Michael ; Kahr, Bart ; Zhu, Qiang. / ROY revisited, again : the eighth solved structure. In: Faraday Discussions. 2018 ; Vol. 211. pp. 477-491.
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