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化学学报
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化学学报 ›› 1981, Vol. 39 ›› Issue (4): 319-326. 上一篇    下一篇

论文

Ag2ClNO3的晶体结构

周公度, 伍伯牧   

  1. 北京大学化学系
  • 投稿日期:1979-05-22 发布日期:2013-06-03

THE CRYSTAL STRUCTURE OF Ag2ClNO3

ZHOU GONG-DU, WU BO-MU   

  1. Department of Chemistry, Peking University
  • Received:1979-05-22 Published:2013-06-03

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Ag2ClNO3晶体属正交晶系,空间群为D2h16—Pnma,晶胞参数为:a=6.657(2)Å,b=5.108(1)Å,c=12.490(8)Å,z=4.在1964年,我们曾用Weissenberg照相法收集强度数据,用Patterson函数法和电子密度函数法初步测定了晶体结构.最近用PW-1100型四圆衍射仪重新收集强度数据,用分块对角矩阵最小二乘方法精化,得较精确的结构参数,R=0.046,关于Ag,Cl和NO3-的配位情况示于图3,4,5中.Ag2ClNO3和Ag2BrNO3是同晶型晶体,结构中均存在曲折的链型[AgX]n分子,和α轴平行,如图6所示,在分子中Ag-Cl和Ag-Br的平均键长分别为2.613Å和2.679Å.

The crystal of Ag2ClNO3 belongs to the orthorhombic, space group D2h16-Pnma, with a=6.657(2)Å,b=5.108(1)Å,c=12.490(8)Å,and z=4. The intensity data were collected with Weissenberg photography in 1964, and with PW-1100 diffractometer recontly.