STRUCTURES OF 2 MODIFICATIONS OF 2,2'-4',4''-2'',2'''-QUATERPYRIDINE

被引：7

作者：

HONEY, GE ^{[1
]}

STEEL, PJ ^{[1
]}

机构：

[1] UNIV CANTERBURY,DEPT CHEM,CHRISTCHURCH 1,NEW ZEALAND

来源：

ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS | 1991年 / 47卷

关键词：

D O I：

10.1107/S0108270191005085

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

C20H14N4, M(r) = 310.4. Alpha-Form: monoclinic, P2(1)/c, a = 9.434 (8), b = 6.110 (4), c = 13.322 (10) angstrom, beta = 105.02 (6)-degrees, V = 741.7 (9) angstrom3, Z = 2, D(x) = 1.39 Mg m-3, lambda(Mo K-alpha) = 0.71069 angstrom, mu = 0.08 mm-1, F(000) = 324, T = 160 K, R = 0.052 for 976 independent observed reflections. Beta-Form: monoclinic, P2(1)/n, a = 7.224 (5), b = 11.530 (6), c = 8.978 (6) angstrom, beta = 91.21 (5)-degrees, V = 747.7 (8) angstrom3, Z = 2, D(x) = 1.38 Mg m-3, lambda(Mo K-alpha) = 0.71069 angstrom, mu = 0.08 mm-1, F(000) = 324, T = 160 K, R = 0.047 for 617 independent observed reflections. In both forms the molecules exist in a centrosymmetric planar conformation with transoid 2,2'- (and 2",2"'-) linkages and pack with a common herringbone pattern but with different molecular stackings.

引用

页码：2247 / 2249

页数：3

共 7 条

[1] STRUCTURE AND BARRIER TO INTERNAL-ROTATION OF BIPHENYL DERIVATIVES IN THE GASEOUS STATE .6. ON THE MOLECULAR-STRUCTURE AND INTERNAL-ROTATION OF 2,2'-BIPYRIDINE [J].