6,6''-DIBROMO-4'-PHENYL-2,2'/6',2''-TERPYRIDINE

被引：24

作者：

CONSTABLE, EC

KHAN, FK

MARQUEZ, VE

RAITHBY, PR

机构：

来源：

ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS | 1992年 / 48卷

关键词：

D O I：

10.1107/S0108270191012015

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

C21H13Br2N3, M(r) = 467.16, orthorhombic, Pbcn, a = 7.366 (3), b = 12.006 (4), c = 20.601 (5) angstrom, V = 1822 (1) angstrom3, Z = 4 (implying that each molecule lies on a twofold special position), D(x) = 1.702 Mg m-3, lambda(Cu K-alpha) = 1.5418 angstrom, mu = 5.36 mm-1, F(000) = 920, T = 298 K, R = 0.037 for 1327 unique observed reflections with F > 4-sigma(F). The molecule lies on a twofold rotation axis which runs through N and one C of the central pyridyl ring. The molecule exhibits a trans,trans arrangement of pyridyl rings about each interannular C-C bond. The three pyridyl rings are approximately coplanar, with the terminal rings making a dihedral angle of 10.9-degrees with the central pyridyl ring. The phenyl substituent is twisted about the interannular C-C bond, and makes a dihedral angle of 35.0-degrees with the central ring. All bond lengths and bond angles within the aromatic rings are within the expected ranges, as is the C-Br distance of 1.910 (3) angstrom.

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页码：932 / 934

页数：3

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