Crystal structure of a second polymorph of tetrakis(pyridin-2-yl)methane

Acta Crystallographica Section E

Masaki Kannami¹  Akira Fuyuhiro¹  Masaji Oda¹  Kouzou Matsumoto² 

[1] Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan;Institute of Natural Sciences, Senshu University, Higashimita 2-1-1, Kawasaki, Kanagawa 214-8580, Japan;

关键词: crystal structure;    pyridine;    bridging ligands;    S4 symmetry;    polymorph;   

DOI  :  10.1107/S1600536814025057

来源: DOAJ

【 摘 要 】

A second polymorph of the title compound, C21H16N4, is reported. The original polymorph was solved by our group [Matsumoto et al. (2003). Tetrahedron Lett. 44, 2861–2864] in the monoclinic space group C2/c and refined to R = 0.050. Now the crystal structure of a tetragonal polymorph (space group P-421c) has been solved and refined to R = 0.036. In the crystal, there are no strong intermolecular interactions. Reflecting the high symmetry of the molecular structure, the asymmetric unit is a quarter of the molecule, and the molecule exhibits S4 symmetry along the c axis in the crystal.

【 授权许可】

Unknown