A 35Cl Zeeman NQR study of a single crystal of boron trichloride yields the value of the field‐gradient asymmetry parameter of 0.557±0.011, in agreement with previous values of 0.54 and 0.50 obtained from studies of polycrystalline samples. Apart from the well known doublet due to an isotope effect, further fine structure whose details depend on the orientation of the Zeeman field is observed. It is shown that this fine structure arises from 11B–35Cl dipole–dipole interaction.

1.
R.
Livingston
,
J. Phys. Chem.
57
,
496
(
1953
).
2.
D. C. Douglass, Ph.D. thesis, Cornell University, 1957.
3.
T.
Chiba
,
J. Phys. Soc. Jpn.
13
,
860
(
1958
).
4.
K. V.
Raman
and
P. T.
Narasimhan
,
Pure Appl. Chem.
32
,
271
(
1972
);
K. V. Raman, Ph.D. thesis, Indian Institute of Technology, Kanpur, India, 1973.
5.
R.
Bersohn
,
J. Chem. Phys.
22
,
2078
(
1954
).
6.
W. G.
Laurita
and
W. S.
Koski
,
J. Am. Chem. Soc.
81
,
3179
(
1959
).
7.
J. A. S. Smith and D. A. Tong, J. Chem. Soc. A 1971, 173.
8.
T. B.
Brill
,
Z. Z.
Hugus
, Jr.
, and
A. F.
Schrelner
,
J. Phys. Chem.
74
,
469
(
1970
).
9.
S.
Sengupta
,
G.
Litzistorf
, and
E. A. C.
Lucken
,
J. Magn. Reson.
42
,
45
(
1981
).
10.
D.
Giezendanner
,
S.
Sengupta
, and
G.
Litzistorf
,
J. Mol. Struct.
58
,
519
(
1980
).
11.
M. A.
Rollier
and
A.
Riva
,
Gazz. Chim. Ital.
77
,
361
(
1947
).
12.
M.
Atoji
and
W. N.
Lipscomb
,
J. Chem. Phys.
27
,
195
(
1957
);
C.
Spencer
and
W. N.
Lipscomb
,
J. Chem. Phys.
28
,
355
(
1958
).,
J. Chem. Phys.
13.
M.
Kaplansky
and
M. A.
Whitehead
,
Can. J. Chem.
48
,
697
(
1970
).
14.
P. A.
Casabella
and
T.
Oja
,
J. Chem. Phys.
50
,
4814
(
1969
).
This content is only available via PDF.
You do not currently have access to this content.