Crystal Engineering on Organic Pigments
Crystal Engineering on Organic Pigments
Crystal Engineering on Organic Pigments
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Diaryl pigments:<br />
Understanding the crystal structures<br />
Compd. Col. strength C<strong>on</strong>form. Packing<br />
P. Yellow 12 100 % twisted herring b<strong>on</strong>e P2 1/c, Z = 4<br />
P. Yellow 13 141 % planar<br />
P. Yellow 14<br />
Twisted c<strong>on</strong>formati<strong>on</strong><br />
preferred for single molecules<br />
(106 %) planar<br />
layer<br />
P. Yellow 83 138 % planar herring b<strong>on</strong>e P2 1/c, Z = 2<br />
Planar c<strong>on</strong>formati<strong>on</strong><br />
unfavorable for single molecules<br />
[M.U. Schmidt, R.E. Dinnebier, H. Kalkhof, J. Phys. Chem. B 111 (2007), 9722-9732]<br />
P1, Z = 1