Laser ablation in combination with molecular beam Fourier transform microwave spectroscopy has been used to establish unambiguously the presence of the diketo form of thymine in the gas phase and to obtain its structure.

1.
J. D.
Watson
and
F. H.
Crick
,
Nature (London)
171
,
737
(
1953
).
3.
E. G.
Robertson
and
J. P.
Simons
,
Phys. Chem. Chem. Phys.
3
,
1
(
2001
).
4.
R. D.
Brown
,
P. D.
Godfrey
,
D.
McNaughton
, and
A. P.
Pierlot
,
J. Chem. Soc., Chem. Commun.
1989
,
37
.
5.
M. J.
Frisch
 et al, GAUSSIAN 03, revision B.04;
Gaussian, Inc.
, Wallingford, CT,
2004
.
6.
A.
Lesarri
,
S.
Mata
,
E. J.
Cocinero
,
S.
Blanco
,
J. C.
López
, and
J. L.
Alonso
,
Angew. Chem., Int. Ed.
41
,
4673
(
2002
).
7.
S.
Blanco
,
A.
Lesarri
,
J. C.
López
, and
J. L.
Alonso
,
J. Am. Chem. Soc.
126
,
11675
(
2004
).
8.
A.
Lesarri
,
E. J.
Cocinero
,
J. C.
López
, and
J. L.
Alonso
,
Angew. Chem., Int. Ed.
43
,
605
(
2004
) and references therein.
9.
M. E.
Sanz
,
A.
Lesarri
,
M. I.
Peña
,
V.
Vaquero
,
V.
Cortijo
,
J. C.
López
, and
J. L.
Alonso
,
J. Am. Chem. Soc.
128
,
3812
(
2006
).
10.
V.
Vaquero
,
M. E.
Sanz
,
J. C.
López
, and
J. L.
Alonso
,
J. Phys. Chem. A
111
,
3443
(
2007
).
11.
A.
Lesarri
,
S.
Mata
,
J. C.
López
, and
J. L.
Alonso
,
Rev. Sci. Instrum.
74
,
4799
(
2003
).
12.
A.
Lesarri
,
E. J.
Cocinero
,
J. C.
López
, and
J. L.
Alonso
,
J. Am. Chem. Soc.
127
,
2572
(
2005
).
13.
M. E.
Sanz
,
V.
Cortijo
,
W.
Caminati
,
J. C.
López
, and
J. L.
Alonso
,
Chem.-Eur. J.
12
,
2564
(
2006
).
14.
A.
Lesarri
,
R.
Sánchez
,
E. J.
Cocinero
,
J. C.
López
, and
J. L.
Alonso
,
J. Am. Chem. Soc.
127
,
12952
(
2005
).
15.
A.
Lesarri
,
E. J.
Cocinero
,
J. C.
López
, and
J. L.
Alonso
,
ChemPhysChem
6
,
1559
(
2005
).
16.
W.
Gordy
and
R. L.
Cook
,
Microwave Molecular Spectra
(
Wiley
,
New York
,
1984
), Chap. XII.
17.
J. K. G.
Watson
, in
Vibrational Spectra and Structure
, edited by
J. R.
Durig
(
Elsevier
,
Amsterdam
,
1977
), Vol.
6
, pp.
1
89
.
18.
H. M.
Pickett
,
J. Mol. Spectrosc.
148
,
371
(
1991
).
19.
20.
See EPAPS Document No. E-JCPSA6-126-025718 for tables containing the frequencies measured for all the isotopomers of thymine observed in this work and the rs coordinates of the isotopically substituted atoms. This document can be reached via a direct link in the online article’s HTML reference section or via the EPAPS homepage (http://www.aip.org/pubservs/epaps.html).
21.
R.
Bohn
,
K.
Hillig
, and
R.
Kuczkowski
,
J. Phys. Chem.
93
,
3456
(
1989
).
22.
C.
Tanjaroon
,
R.
Subramanian
,
C.
Karunatilaka
, and
S. G.
Kukolich
,
J. Phys. Chem. A
108
,
9531
(
2004
).
23.
M.
Stolze
and
D. H.
Sutter
,
Z. Naturforsch., A: Phys. Sci.
42
,
49
(
1987
).
24.
R. C.
Woods
,
J. Mol. Spectrosc.
21
,
4
(
1966
).
25.
J.
Kraitchman
,
Am. J. Phys.
21
,
17
(
1953
).
26.
B. P.
Van Eijck
,
J. Mol. Spectrosc.
91
,
348
(
1982
).

Supplementary Material

You do not currently have access to this content.