The rotationally resolved A2Πu←X2Πg electronic origin band spectrum of dicyanodiacetylene cation, NC6N+, has been recorded in the gas phase using frequency-production double modulation spectroscopy in a liquid nitrogen cooled hollow cathode discharge and cavity ring down spectroscopy in a supersonic plasma. The analysis of the complementary results provides accurate molecular parameters for the two spin-orbit components in both electronic states.

1.
M. C.
McCarthy
,
J. U.
Grabow
,
M. J.
Travers
,
W.
Chen
,
C. A.
Gottlieb
, and
P.
Thaddeus
,
Astrophys. J.
494
,
L231
(
1998
).
2.
M. C.
McCarthy
and
P.
Thaddeus
,
Chem. Soc. Rev.
30
,
177
(
2001
).
3.
M. B.
Bell
,
P. A.
Feldman
,
M. J.
Travers
,
M. C.
McCarthy
,
C. A.
Gottlieb
, and
P.
Thaddeus
,
Astrophys. J.
483
,
L61
(
1997
).
4.
H.
Linnartz
,
O.
Vaizert
,
P.
Cias
,
L.
Grüter
, and
J. P.
Maier
,
Chem. Phys. Lett.
345
,
89
(
2001
).
5.
C. D.
Ball
,
M. C.
McCarthy
, and
P.
Thaddeus
,
J. Chem. Phys.
112
,
10149
(
2000
).
6.
O.
Vaizert
,
T.
Motylewsi
,
M.
Wyss
,
E.
Riaplov
,
H.
Linnartz
, and
J. P.
Maier
,
J. Chem. Phys.
114
,
7918
(
2001
).
7.
H.
Linnartz
,
T.
Motylewski
,
O.
Vaizert
,
J. P.
Maier
,
A. J.
Apponi
,
M. C.
McCarthy
,
C. A.
Gottlieb
, and
P.
Thaddeus
,
J. Mol. Spectrosc.
197
,
1
(
1999
).
8.
C. A.
Gottlieb
,
A. J.
Apponi
,
M. C.
McCarthy
,
P.
Thaddeus
, and
H.
Linnartz
,
J. Chem. Phys.
113
,
1910
(
2000
).
9.
J.
Agreiter
,
A. M.
Smith
,
M.
Härtle
, and
V.
Bondybey
,
Chem. Phys. Lett.
225
,
87
(
1994
).
10.
D.
Forney
,
P.
Freivogel
,
J.
Fulara
, and
J. P.
Maier
,
J. Phys. Chem.
102
,
1510
(
1995
).
11.
J.
Agreiter
,
A. M
Smith
, and
V.
Bondybey
,
Chem. Phys. Lett.
241
,
317
(
1995
).
12.
A. M.
Smith
,
J.
Agreiter
, and
V.
Bondybey
,
Chem. Phys. Lett.
244
,
379
(
1995
).
13.
E.
Kloster-Jensen
,
J. P.
Maier
,
O.
Marthaler
, and
M.
Mohraz
,
J. Chem. Phys.
71
,
3125
(
1979
).
14.
G.
Bieri
,
E.
Kloster-Jensen
,
S.
Kvisle
,
J. P.
Maier
, and
O.
Mathaler
,
J. Chem. Soc., Faraday Trans.
76
,
676
(
1980
).
15.
J. P.
Maier
,
L.
Misev
, and
F.
Thommen
,
J. Phys. Chem.
86
,
54
(
1982
).
16.
W. E.
Sinclair
,
D.
Pfluger
, and
J. P.
Maier
,
J. Chem. Phys.
111
,
9600
(
1999
).
17.
W. E.
Sinclair
,
D.
Pfluger
,
D.
Verdes
, and
J. P.
Maier
,
J. Chem. Phys.
112
,
8899
(
2000
).
18.
S.
Lee
,
J. Phys. Chem.
100
,
13959
(
1996
).
19.
D.
Pfluger
,
T.
Motylewski
,
H.
Linnartz
,
W. E.
Sinclair
, and
J. P.
Maier
,
Chem. Phys. Lett.
329
,
29
(
2000
).
20.
W. E.
Sinclair
,
D.
Pfluger
,
H.
Linnartz
, and
J. P.
Maier
,
J. Chem. Phys.
110
,
296
(
2000
).
21.
T.
Motylewski
and
H.
Linnartz
,
Rev. Sci. Instrum.
70
,
1305
(
1999
).
22.
No rotational resolution has been obtained, presumably because of residual Doppler broadening.
23.
See EPAPS Document No. E-JCPSA6-116-004204 for a list with line positions and observed-calculated values.
This document may be retrieved via the EPAPS homepage (http://www.aip.org/pubserv/epaps.html) or from ftp.aip.org in the director /epaps/. See the EPAPS homepage for more information.
24.
C. M. Western, School of Chemistry, University of Bristol, UK, PGOPHER, 1994 and 1998.
25.
H. W. Kroto, Molecular Rotation Spectra (Wiley, New York, 1975), p. 232.
26.
See Ref. 23.
27.
Shifting the rotational assignment by ±1J gives values of −7 and −115 cm−1.
28.
J. H.
van Vleck
,
Rev. Mod. Phys.
23
,
213
(
1951
).
29.
R. F.
Curl
,
Mod. Phys.
9
,
585
(
1965
).
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