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Crystal structure of a second polymorph of tetra-kis-(pyridin-2-yl)methane.

ABSTRACT: A second polymorph of the title compound, C21H16N4, is reported. The original polymorph was solved by our group [Matsumoto et al. (2003 ?). Tetra-hedron Lett. 44, 2861-2864] in the monoclinic space group C2/c and refined to R = 0.050. Now the crystal structure of a tetra-gonal polymorph (space group P-421 c) has been solved and refined to R = 0.036. In the crystal, there are no strong inter-molecular inter-actions. Reflecting the high symmetry of the mol-ecular structure, the asymmetric unit is a quarter of the mol-ecule, and the mol-ecule exhibits S4 symmetry along the c axis in the crystal.

SUBMITTER: Matsumoto K

PROVIDER: S-EPMC4257413 | biostudies-literature | 2014 Dec

REPOSITORIES: biostudies-literature

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Crystal structure of a second polymorph of tetra-kis-(pyridin-2-yl)methane.

Matsumoto Kouzou K Kannami Masaki M Fuyuhiro Akira A Oda Masaji M

Acta crystallographica. Section E, Structure reports online 20141121 Pt 12

A second polymorph of the title compound, C21H16N4, is reported. The original polymorph was solved by our group [Matsumoto et al. (2003 ▶). Tetra-hedron Lett. 44, 2861-2864] in the monoclinic space group C2/c and refined to R = 0.050. Now the crystal structure of a tetra-gonal polymorph (space group P-421 c) has been solved and refined to R = 0.036. In the crystal, there are no strong inter-molecular inter-actions. Reflecting the high symmetry of the mol-ecular structure, the asymmetric unit is ...[more]

PMID: 25553043

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