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

Matsumoto K, Kannami M, Fuyuhiro A, Oda M - Acta Crystallogr Sect E Struct Rep Online (2014)

Bottom Line: 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.

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Affiliation: Institute of Natural Sciences, Senshu University, Higashimita 2-1-1, Kawasaki, Kanagawa 214-8580, Japan.

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.

No MeSH data available.


An ellipsoid plot of the title compound (viewed down the c axis). Displacement ellipsoids are drawn at the 50% probability level. Symmetry codes: (i) y, -x, -z + 1; (ii) -x, -y, z; (iii) -y, x, -z + 1.
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Fap1: An ellipsoid plot of the title compound (viewed down the c axis). Displacement ellipsoids are drawn at the 50% probability level. Symmetry codes: (i) y, -x, -z + 1; (ii) -x, -y, z; (iii) -y, x, -z + 1.


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

Matsumoto K, Kannami M, Fuyuhiro A, Oda M - Acta Crystallogr Sect E Struct Rep Online (2014)

An ellipsoid plot of the title compound (viewed down the c axis). Displacement ellipsoids are drawn at the 50% probability level. Symmetry codes: (i) y, -x, -z + 1; (ii) -x, -y, z; (iii) -y, x, -z + 1.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4257413&req=5

Fap1: An ellipsoid plot of the title compound (viewed down the c axis). Displacement ellipsoids are drawn at the 50% probability level. Symmetry codes: (i) y, -x, -z + 1; (ii) -x, -y, z; (iii) -y, x, -z + 1.
Bottom Line: 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.

View Article: PubMed Central - HTML - PubMed

Affiliation: Institute of Natural Sciences, Senshu University, Higashimita 2-1-1, Kawasaki, Kanagawa 214-8580, Japan.

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.

No MeSH data available.