Abstract
Chrysene crystallizes in the monoclinic system. By means of rotation, oscillation, and moving film photographs the following crystal data have been obtained:—
a
= 8·34 A,
b
= 6·18 A,
c
= 25·0 A, β = 115·8°. All the planes (
hkl
) are halved when
h
+
k
+
l
is odd and in addition all the (
h
0
l
) planes are halved. There are two space groups available, C
6
2
h
(I2/
c
) and C
4
s
(I
c
). In what follows it will be shown that the former space group is the more probable. The measured density is 1·27 (at room temperature) giving 4 molecules of C
18
H
12
per unit cell. Molecular volume = 290 (A)
3
.
Cited by
28 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献