Results of a detailed study on electron interactions with nitromethane (CH3NO2) embedded in helium nanodroplets are reported. Anionic and cationic products formed are analysed by mass spectrometry. When the doped helium droplets are irradiated with low-energy electrons of about 2 eV kinetic energy, exclusively parent cluster anions (CH3NO2)n− are formed. At 8.5 eV, three anion cluster series are observed, i.e., (CH3NO2)n−, [(CH3NO2)n–H]−, and (CH3NO2)nNO2−, the latter being the most abundant. The results obtained for anions are compared with previous electron attachment studies with bare nitromethane and nitromethane condensed on a surface. The cation chemistry (induced by electron ionization of the helium matrix at 70 eV and subsequent charge transfer from He+ to the dopant cluster) is dominated by production of methylated and protonated nitromethane clusters, (CH3NO2)nCH3+ and (CH3NO2)nH+.
REFERENCES
1.
G.
Seifert
, Nat. Phys.
4
, 12
(2008
).2.
A.
Burger
and A. P.
Parulkar
, Annu. Rev. Pharmacol.
6
, 19
(1966
).3.
J. F.
Arenas
, J. C.
Otero
, D.
Peláez
, J.
Soto
, and L.
Serrano-Andrés
, J. Chem. Phys.
121
, 4127
(2004
).4.
E.
Alizadeh
, F.
Ferreira da Silva
, F.
Zappa
, A.
Mauracher
, M.
Probst
, S.
Denifl
, A.
Bacher
, T. D.
Märk
, P.
Limão-Vieira
, and P.
Scheier
, Int. J. Mass Spectrom.
271
, 15
(2008
).5.
R.
Antunes
, D.
Almeida
, G.
Martins
, N. J.
Mason
, G.
Garcia
, M. J. P.
Maneira
, Y.
Nunes
, and P.
Limão-Vieira
, Phys. Chem. Chem. Phys.
12
, 12513
(2010
) and references therein.6.
R. N.
Compton
, H. S.
Carman
Jr., C.
Desfrancois
, H.
Abdoul-Carime
, J. P.
Schermann
, J. H.
Hendricks
, S. A.
Lyapustina
, and K. H.
Bowen
, J. Chem. Phys.
105
3472
(1996
) and references therein.7.
F.
Lecomte
, S.
Carles
, C.
Desfrancois
, and M. A.
Johnson
, J. Chem. Phys.
113
, 10973
(2000
).8.
D. J.
Goebbert
, K.
Pichugin
, and A.
Sanov
, J. Chem. Phys.
131
, 164308
(2009
).9.
C. L.
Adams
, H.
Schneider
, K. M.
Ervin
, and J. M.
Weber
, J Chem. Phys.
130
, 074307
(2009
).10.
S. T.
Stokes
, K. H.
Bowen
, T.
Sommerfeld
, S.
Ard
, N.
Mirsaleh-Kohan
, J. D.
Steill
, and R. N.
Compton
, J. Chem. Phys.
129
, 064308
(2008
).11.
D. J.
Goebbert
, D.
Khuseynov
, and A.
Sanov
, J. Chem. Phys.
133
, 084311
(2010
).12.
C. Q.
Jiao
, C. A.
DeJoseph
, and A.
Garscadden
, J. Phys. Chem. A
107
, 9040
(2003
).13.
S.
Denifl
, I.
Mähr
, F.
Ferreira da Silva
, F.
Zappa
, T. D.
Märk
, and P.
Scheier
, Eur. Phys. J. D
51
, 73
(2009
).14.
H.
Schöbel
, M.
Dampc
, F.
Ferreira da Silva
, A.
Mauracher
, F.
Zappa
, S.
Denifl
, T. D.
Märk
, and P.
Scheier
, Int. J. Mass Spectrom.
280
, 26
(2009
).15.
S.
Jaksch
, A.
Mauracher
, A.
Bacher
, S.
Denifl
, F.
Ferreira da Silva
, H.
Schöbel
, O.
Echt
, T. D.
Märk
, M.
Probst
, D. K.
Bohme
, and P.
Scheier
, J. Chem. Phys.
129
, 224306
(2008
).16.
S.
Denifl
, M.
Stano
, A.
Stamatovic
, P.
Scheier
, and T. D.
Märk
, J. Chem. Phys.
124
, 054320
(2006
).17.
F.
Ferreira da Silva
, S.
Denifl
, T. D.
Märk
, A. M.
Ellis
, and P.
Scheier
, J. Phys. Chem.
132
, 214306
(2010
).18.
F.
Ferreira da Silva
, S.
Jaksch
, G.
Martins
, H. M.
Dang
, M.
Dampc
, S.
Denifl
, T. D.
Märk
, P.
Limão-Vieira
, J.
Liu
, S.
Yang
, A. M.
Ellis
, and P.
Scheier
, Phys. Chem. Chem. Phys.
11
, 11631
(2009
).19.
H.
Schöbel
, P.
Bartl
, C.
Leidlmair
, M.
Daxner
, S.
Zöttl
, S.
Denifl
, T. D.
Märk
, P.
Scheier
, D.
Spangberg
, A.
Mauracher
, and D. K.
Bohme
, Phys. Rev. Lett.
105
, 243402
(2010
).20.
J. P.
Toennies
and A. F.
Vilesov
, Angew. Chem., Int. Ed.
43
, 2622
(2004
).21.
F.
Ferreira da Silva
, P.
Bartl
, S.
Denifl
, O.
Echt
, T. D.
Märk
, and P.
Scheier
, Phys. Chem. Chem. Phys.
11
, 9791
(2009
).22.
F.
Stienkemeier
and K.
Lehmann
, J. Phys. B
39
, R127
(2006
).23.
E.
Alizadeh
, D.
Gschliesser
, P.
Bartl
, M.
Hager
, A.
Edtbauer
, V.
Vizcaino
, A.
Mauracher
, M.
Probst
, T. D.
Märk
, S.
Ptasinska
, N. J.
Mason
, S.
Denifl
, and P.
Scheier
, J. Chem. Phys.
5/134
, 054305
(2011
).24.
A.
Scheidemann
, B.
Schilling
, and J. P.
Toennies
, J. Phys. Chem.
97
, 2128
(1993
).25.
A. M.
Ellis
and S.
Yang
, Phys. Rev. A
76
, 032714
(2007
).26.
See http://webbook.nist.gov/chemistry/ for NIST Chemistry WebBook.
27.
S.
Smolarek
, N. B.
Brauer
, W. J.
Buma
, and M.
Drabbels
, J. Am. Chem. Soc.
132
, 14086
(2010
), and references cited therein.28.
F.
Ferreira da Silva
, P.
Waldburger
, S.
Jaksch
, A.
Mauracher
, S.
Denifl
, O.
Echt
, T. D.
Märk
, and P.
Scheier
, Chem.-Eur. J.
15
, 7101
(2009
).29.
E.
Coccia
, F.
Martinetti
, E.
Bodo
, and F. A.
Gianturco
, J. Chem. Phys.
128
, 134511
(2008
).30.
B.
Shepperson
, J.
Liu
, A. M.
Ellis
, and S. F.
Yang
, J. Phys. Chem. A
115
, 7010
(2011
).31.
S.
Denifl
, F.
Zappa
, I.
Mähr
, J.
Lecointre
, M.
Probst
, T. D.
Märk
, and P.
Scheier
, Phys. Rev. Lett.
97
, 043201
(2006
).32.
S.
Denifl
, F.
Zappa
, I.
Mähr
, A.
Mauracher
, M.
Probst
, T. D.
Märk
, and P.
Scheier
, J. Am. Chem. Soc.
130
, 5065
(2008
).33.
S.
Yang
, S. M.
Brereton
, M. D.
Wheeler
, and A. M.
Ellis
, J. Phys. Chem. A
110
, 1791
(2006
).34.
A.
Mauracher
, H.
Schöbel
, F.
Ferreira da Silva
, A.
Edtbauer
, C.
Mitterdorfer
, S.
Denifl
, T. D.
Märk
, E.
Illenberger
, and P.
Scheier
, Phys. Chem. Chem. Phys.
11
, 8240
(2009
).35.
S.
Denifl
, F.
Zappa
, A.
Mauracher
, F.
Ferreira da Silva
, A.
Bacher
, O.
Echt
, T. D.
Märk
, D. K.
Böhme
, and P.
Scheier
, ChemPhysChem
9
, 1387
(2008
).36.
In the negative ion mass spectrum close to the region of deuterated nitromethane anion we observe at 126 Th (M2–D)− and at 128 Th (M2)−. The corresponding hydrated anions we observe at 144 Th and 146 Th, i.e., a H2O molecule is attached.
37.
T. D.
Märk
, K.
Leiter
, W.
Ritter
, and A.
Stamatovic
, Phys. Rev. Lett.
55
, 2559
(1985
).38.
M.
Armbruster
, H.
Haberland
, and H.-G.
Schindler
, Phys. Rev. Lett.
47
, 323
(1981
).39.
F.
Zappa
, S.
Denifl
, I.
Mähr
, A.
Bacher
, O.
Echt
, T. D.
Märk
, and P.
Scheier
, J. Am. Chem. Soc.
130
, 5573
(2008
).40.
V.
Vizcaino
, S.
Denifl
, T. D.
Märk
, E.
Illenberger
, and P.
Scheier
, J. Chem. Phys.
133
, 154512
(2010
).41.
H.
Hotop
, M. W.
Ruf
, M.
Allan
, and I. I.
Fabrikant
, Adv. At., Mol., Opt. Phys.
49
, 85
(2003
) and references therein.42.
S.
Denifl
, V.
Vizcaino
, T. D.
Märk
, E.
Illenberger
, and P.
Scheier
, Phys. Chem. Chem. Phys.
12
, 5219
(2010
).43.
H. W.
Sarkas
, S. T.
Arnold
, J. G.
Eaton
, G. H.
Lee
, and K. H.
Bowen
, J. Chem. Phys.
116
, 5731
(2002
), and references therein.44.
M.
Knapp
, O.
Echt
, D.
Kreisle
, and E.
Recknagel
, J. Phys. Chem.
91
, 2601
(1987
).45.
W.
Sailer
, A.
Pelc
, S.
Matejcik
, E.
Illenberger
, P.
Scheier
, and T. D.
Märk
, J. Chem. Phys.
117
, 7989
(2002
).46.
M.
Bazin
, S.
Ptasinska
, A. D.
Bass
, and L.
Sanche
, Phys. Chem. Chem. Phys.
11
, 1610
(2009
).47.
The thin film experiments were carried out with deuterated nitromethane since the used experimental setup had higher detection efficiency for D− than for H−.
© 2011 American Institute of Physics.
2011
American Institute of Physics
You do not currently have access to this content.
