CRYSTAL-STRUCTURES OF P-CHLOROBENZALDEHYDE AND P-BROMOBENZALDEHYDE

被引：13

作者：

BRITTON, D

机构：

[1] Department of Chemistry, University of Minnesota, Minneapolis, 55455, Minnesota

来源：

JOURNAL OF CHEMICAL CRYSTALLOGRAPHY | 1994年 / 24卷 / 08期

关键词：

P-CHLOROBENZALDEHYDE; P-BROMOBENZALDEHYDE; LEWIS ACID-BASE INTERACTIONS;

D O I：

10.1007/BF01666736

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

p-Chloro- and p-bromobenzaldehyde form isomorphous monoclinic crystals, space group P2(1)/a. For p-Cl at -96 degrees C, a = 12.945(3), b = 3.833(3), c = 26.503(9) Angstrom, beta = 103.68(2)degrees, Z = 8, V = 1278(2) Angstrom(3), Dx = 1.461(2) g cm(-3), refinement on 2714 reflections, R = 0.047. For p-Br at -96 degrees C, a = 12.754(5), b = 3.919(3), c = 27.317(12) Angstrom, beta = 103.28(3)degrees, Z = 8, V = 1329(2) Angstrom(3), Dx = 1.849(3) 8 cm(-3), refinement on 1519 reflections, R = 0.062. The molecules do not differ significantly from planarity. They pack in stacks with Cl...Cl or Br...Br contacts at one end and CH...O contacts that are suggestive of hydrogen bonds at the other. There are no O...Cl or O...Br contacts.

引用

页码：553 / 556

页数：4

共 9 条

[1] THE CRYSTAL PACKING OF 4,7-DIBROMOBENZOFURAZAN 1-OXIDE [J].