The observation of a sharp predissociation threshold in the resonant two-photon ionization spectra of EuO, TmO, and YbO has been used to measure the bond dissociation energies of these species. The resulting values, D0(EuO) = 4.922(3) eV, D0(TmO) = 5.242(6) eV, and D0(YbO) = 4.083(3) eV, are in good agreement with previous values but are much more precise. In addition, the ionization energy of TmO was measured by the observation of a threshold for one-color two-photon ionization of this species, resulting in IE(TmO) = 6.56(2) eV. The observation of a sharp predissociation threshold for EuO was initially surprising because the half-filled 4f7 subshell of Eu in its ground state generates fewer potential energy curves than in the other molecules we have studied by this method. The observation of a sharp predissociation threshold in YbO was even more surprising, given that the ground state of Yb is nondegenerate (4f146s2, 1Sg) and the lowest excited state of Yb is over 2 eV higher in energy. It is suggested that these molecules possess a high density of electronic states at the energy of the ground separated atom limit because ion-pair states drop below the ground limit, providing a sufficient electronic state density to allow predissociation to set in at the thermochemical threshold.
REFERENCES
1.
M. D.
Morse
, Acc. Chem. Res.
52
, 119
–126
(2019
).2.
D. M.
Merriles
, C.
Nielson
, E.
Tieu
, and M. D.
Morse
, J. Phys. Chem. A
125
, 4420
–4434
(2021
).3.
J. J.
Sorensen
, E.
Tieu
, and M. D.
Morse
, J. Chem. Phys.
154
, 124307
(2021
).4.
J. J.
Sorensen
, E.
Tieu
, C.
Nielson
, A.
Sevy
, K. H.
Tomchak
, and M. D.
Morse
, J. Chem. Phys.
152
, 194307
(2020
).5.
J. J.
Sorensen
, E.
Tieu
, and M. D.
Morse
, J. Chem. Phys.
152
, 124305
(2020
).6.
J. J.
Sorensen
, E.
Tieu
, and M. D.
Morse
, J. Chem. Phys.
152
, 244305
(2020
).7.
D. M.
Merriles
, A.
Sevy
, C.
Nielson
, and M. D.
Morse
, J. Chem. Phys.
153
, 024303
(2020
).8.
J. J.
Sorensen
, E.
Tieu
, A.
Sevy
, D. M.
Merriles
, C.
Nielson
, J. C.
Ewigleben
, and M. D.
Morse
, J. Chem. Phys.
153
, 074303
(2020
).9.
D. M.
Merriles
, E.
Tieu
, and M. D.
Morse
, J. Chem. Phys.
151
, 044302
(2019
).10.
A.
Sevy
, D. M.
Merriles
, R. S.
Wentz
, and M. D.
Morse
, J. Chem. Phys.
151
, 024302
(2019
).11.
A.
Sevy
, D. J.
Matthew
, and M. D.
Morse
, J. Chem. Phys.
149
, 044306
(2018
).12.
A.
Sevy
, E.
Tieu
, and M. D.
Morse
, J. Chem. Phys.
149
, 174307
(2018
).13.
A.
Sevy
, J. J.
Sorensen
, T. D.
Persinger
, J. A.
Franchina
, E. L.
Johnson
, and M. D.
Morse
, J. Chem. Phys.
147
, 084301
(2017
).14.
D. J.
Matthew
, E.
Tieu
, and M. D.
Morse
, J. Chem. Phys.
146
, 144310
(2017
).15.
A.
Sevy
, R. F.
Huffaker
, and M. D.
Morse
, J. Phys. Chem. A
121
, 9446
–9457
(2017
).16.
E. L.
Johnson
, Q. C.
Davis
, and M. D.
Morse
, J. Chem. Phys.
144
, 234306
(2016
).17.
J. J.
Sorensen
, T. D.
Persinger
, A.
Sevy
, J. A.
Franchina
, E. L.
Johnson
, and M. D.
Morse
, J. Chem. Phys.
145
, 214308
(2016
).18.
R. J.
Ackermann
, E. G.
Rauh
, and R. J.
Thorn
, J. Chem. Phys.
65
, 1027
–1031
(1976
).19.
R. A.
VanGundy
, T. D.
Persinger
, and M. C.
Heaven
, J. Chem. Phys.
150
, 114302
(2019
).20.
R. M.
Cox
, J. S.
Kim
, P. B.
Armentrout
, J.
Bartlett
, R. A.
VanGundy
, M. C.
Heaven
, S. G.
Ard
, J. J.
Melko
, N. S.
Shuman
, and A. A.
Viggiano
, J. Chem. Phys.
142
, 134307
(2015
).21.
W.
Cao
, Y.
Zhang
, L.
Wu
, and D.-S.
Yang
, J. Phys. Chem. A
125
, 1941
–1948
(2021
).22.
M.
Ghiassee
, B. C.
Stevenson
, and P. B.
Armentrout
, Phys. Chem. Chem. Phys.
23
, 2938
–2952
(2021
).23.
M.
Demireva
, J.
Kim
, and P. B.
Armentrout
, J. Phys. Chem. A
120
, 8550
–8563
(2016
).24.
L.
Flannery
, H.
Gálvez
, W.
Nimens
, A. A.
Rahman
, and L.
Whittaker-Brooks
, Polyhedron
170
, 334
–358
(2019
).25.
Y. N.
Vodyanitskii
, Eurasian Soil Sci.
45
, 56
–67
(2012
).26.
R. J. M.
Konings
, O.
Beneš
, A.
Kovács
, D.
Manara
, D.
Sedmidubský
, L.
Gorokhov
, V. S.
Iorish
, V.
Yungman
, E.
Shenyavskaya
, and E.
Osina
, J. Phys. Chem. Ref. Data
43
, 013101
(2014
).27.
J.
Päiväsaari
, M.
Putkonen
, and L.
Niinistö
, Thin Solid Films
472
, 275
–281
(2005
).28.
S.
Jeon
, K.
Im
, H.
Yang
, H.
Lee
, H.
Sim
, S.
Choi
, T.
Jang
, and H.
Hwang
, in International Electron Devices Meeting. Technical Digest (Cat. No. 01CH37224)
(IEEE
, Washington, DC
, 2001
).29.
V.
Goian
, R.
Held
, E.
Bousquet
, Y.
Yuan
, A.
Melville
, H.
Zhou
, V.
Gopalan
, P.
Ghosez
, N. A.
Spaldin
, D. G.
Schlom
, and S.
Kamba
, Commun. Mater.
1
, 74
(2020
).30.
H. A.
Saudi
, W. M.
Abd-Allah
, and K. S.
Shaaban
, J. Mater. Sci.: Mater. Electron.
31
, 6963
–6976
(2020
).31.
L. A.
Ekanger
, D. R.
Mills
, M. M.
Ali
, L. A.
Polin
, Y.
Shen
, E. M.
Haacke
, and M. J.
Allen
, Inorg. Chem.
55
, 9981
–9988
(2016
).32.
R. E.
Jelley
and A. G.
Blackman
, Nat. Chem.
11
, 751
–756
(2019
).33.
E.
Engels
, M.
Westlake
, N.
Li
, S.
Vogel
, Q.
Gobert
, N.
Thorpe
, A.
Rosenfeld
, M.
Lerch
, S.
Corde
, and M.
Tehei
, Biomed. Phys. Eng. Express
4
, 044001
(2018
).34.
A. A.
Ibrahim
, R.
Ahmad
, A.
Umar
, M. S.
Al-Assiri
, A. E.
Al-Salami
, R.
Kumar
, S. G.
Ansari
, and S.
Baskoutas
, Biosens. Bioelectron.
98
, 254
–260
(2017
).35.
D. E.
Maison
, V. V.
Flambaum
, N. R.
Hutzler
, and L. V.
Skripnikov
, Phys. Rev. A
103
, 022813
(2021
).36.
C. J.
Ho
, J. A.
Devlin
, I. M.
Rabey
, P.
Yzombard
, J.
Lim
, S. C.
Wright
, N. J.
Fitch
, E. A.
Hinds
, M. R.
Tarbutt
, and B. E.
Sauer
, New J. Phys.
22
, 053031
(2020
).37.
B. L.
Augenbraun
, Z. D.
Lasner
, A.
Frenett
, H.
Sawaoka
, C.
Miller
, T. C.
Steimle
, and J. M.
Doyle
, New J. Phys.
22
, 022003
(2020
).38.
R.
Gillen
, S. J.
Clark
, and J.
Robertson
, Phys. Rev. B
87
, 125116
(2013
).39.
Q.
Zhang
, S.-X.
Hu
, H.
Qu
, J.
Su
, G.
Wang
, J.-B.
Lu
, M.
Chen
, M.
Zhou
, and J.
Li
, Angew. Chem.
128
, 7010
–7014
(2016
).40.
C.
Platas-Iglesias
, A.
Roca-Sabio
, M.
Regueiro-Figueroa
, D.
Esteban-Gomez
, A.
De Blas
, and T.
Rodriguez-Blas
, Curr. Inorg. Chem.
1
, 91
–116
(2011
).41.
H.
Jiang
, P.
Rinke
, and M.
Scheffler
, Phys. Rev. B
86
, 125115
(2012
).42.
V. G.
Solomonik
and A. N.
Smirnov
, J. Chem. Theory Comput.
13
, 5240
–5254
(2017
).43.
M.
Dolg
, H.
Stoll
, and H.
Preuss
, Chem. Phys.
148
, 219
–227
(1990
).44.
A. Z.
de Oliveira
, I. B.
Ferreira
, C. T.
Campos
, F. E.
Jorge
, and P. A.
Fantin
, J. Mol. Model.
25
, 38
(2019
).45.
S.
Grimmel
, G.
Schoendorff
, and A. K.
Wilson
, J. Chem. Theory Comput.
12
, 1259
–1266
(2016
).46.
Z. J.
Wu
, W.
Guan
, J.
Meng
, and Z. M.
Su
, J. Cluster Sci.
18
, 444
–458
(2007
).47.
M.
Guido
and G.
Gigli
, J. Chem. Phys.
61
, 4138
–4140
(1974
).48.
M.
Dolg
, H.
Stoll
, and H.
Preuss
, Theor. Chim. Acta
85
, 441
–450
(1993
).49.
S. G.
Wang
, D. K.
Pan
, and W. H. E.
Schwarz
, J. Chem. Phys.
102
, 9296
–9308
(1995
).50.
W.
Liu
, G.
Hong
, D.
Dai
, L.
Li
, and M.
Dolg
, Theor. Chem. Acc.
96
, 75
–83
(1997
).51.
X.
Cao
, J. Chin. Chem. Soc.
50
, 665
–676
(2003
).52.
G. A.
McCarver
, R. J.
Hinde
, and K. D.
Vogiatzis
, Inorg. Chem.
59
, 10492
–10500
(2020
).53.
W.
Xu
, W.-X.
Ji
, and S.-G.
Wang
, Comput. Theor. Chem.
1068
, 81
–87
(2015
).54.
J. A.
Pople
, Rev. Mod. Phys.
71
, 1267
–1274
(1999
).55.
J. K.
Gibson
, J. Appl. Phys.
78
, 1274
–1280
(1995
).56.
J. A.
Felton
, M.
Ray
, S. E.
Waller
, J. O.
Kafader
, and C. C.
Jarrold
, J. Phys. Chem. A
118
, 9960
–9969
(2014
).57.
W. C.
Wiley
and I. H.
McLaren
, Rev. Sci. Instrum.
26
, 1150
–1157
(1955
).58.
B. A.
Mamyrin
, V. I.
Karataev
, D. V.
Shmikk
, and V. A.
Zagulin
, Zh. Eksp. Teor. Fiz.
64
, 82
–89
(1973
).59.
D. M.
Merriles
and M. D.
Morse
, “Bond dissociation energies and electronic structure of transition metal borides: ScB2, TiB2, VB2, YB2, and MoB2
” (unpublished) (2021
).60.
H.
Lefebvre-Brion
and R. W.
Field
, The Spectra and Dynamics of Diatomic Molecules
(Elsevier
, Amsterdam
, 2004
).61.
E. L.
Johnson
and M. D.
Morse
, J. Chem. Phys.
143
, 104303
(2015
).62.
A.
Kramida
, Y.
Ralchenko
, J.
Reader
, and NIST ASD Team
, NIST Atomic Spectra Database (version 5.8), National Institute of Standards and Technology
, Gaithersburg, MD
, 2019
.63.
D. S.
Bailey
, J. R.
Hiskes
, and A. C.
Riviere
, Plasma Phys. Controlled Nucl. Fusion Res.
5
, 41
–46
(1965
).64.
J. L.
Persson
and R. L.
Whetten
, Chem. Phys. Lett.
147
, 168
–173
(1988
).65.
L. L.
Ames
, P. N.
Walsh
, and D.
White
, J. Phys. Chem.
71
, 2707
–2718
(1967
).66.
C. R.
Dickson
and R. N.
Zare
, Chem. Phys.
7
, 361
–370
(1975
).67.
R.
Dirscherl
and K. W.
Michel
, Chem. Phys. Lett.
43
, 547
–551
(1976
).68.
E.
Murad
and D. L.
Hildenbrand
, J. Chem. Phys.
65
, 3250
–3256
(1976
).69.
G.
Balducci
, G.
Gigli
, and M.
Guido
, J. Chem. Phys.
67
, 147
–151
(1977
).70.
J.
Kordis
and K. A.
Gingerich
, J. Chem. Phys.
66
, 483
–491
(1977
).71.
K. P.
Huber
and G.
Herzberg
, Constants of Diatomic Molecules
(Van Nostrand Reinhold
, New York
, 1979
).72.
E.
Murad
and D. L.
Hildenbrand
, J. Chem. Phys.
73
, 4005
–4011
(1980
).73.
J. B.
Pedley
and E. M.
Marshall
, J. Phys. Chem. Ref. Data
12
, 967
–1031
(1983
).74.
M. S.
Chandrasekharaiah
and K. A.
Gingerich
, in Handbook on the Chemistry and Physics of Rare Earths
, edited by K. A. J.
Gschniedner
and L.
Eyring
(Elsevier
, Amsterdam
, 1989
), Vol. 12, pp. 409
–431
.75.
M. C. R.
Cockett
, L.
Nyulászi
, T.
Veszprémi
, T. G.
Wright
, and J. M.
Dyke
, J. Electron Spectrosc. Relat. Phenom.
57
, 373
–397
(1991
).76.
M.
Dulick
, E.
Murad
, and R. F.
Barrow
, J. Chem. Phys.
85
, 385
–390
(1986
).77.
R. J.
Ackermann
and M. S.
Chandrasekharaiah
, Thermodynamics of Nuclear Materials
(International Atomic Energy Agency
, Vienna
, 1974
), Vol. 2, pp. 3
–26
.78.
A.
Yokozeki
and M.
Menzinger
, Chem. Phys.
14
, 427
–439
(1976
).79.
M.
Dolg
, H.
Stoll
, H. J.
Flad
, and H.
Preuss
, J. Chem. Phys.
97
, 1162
–1173
(1992
).80.
W.
Liu
, M.
Dolg
, and L.
Li
, J. Chem. Phys.
108
, 2886
–2895
(1998
).81.
W.-H.
Xu
, Y.
Zhang
, and W.-J.
Liu
, Sci. China, Ser. B: Chem.
52
, 1945
–1953
(2009
).82.
A. M.
James
, P.
Kowalczyk
, E.
Langlois
, M. D.
Campbell
, A.
Ogawa
, and B.
Simard
, J. Chem. Phys.
101
, 4485
–4495
(1994
).83.
D. S.
Yang
, A. M.
James
, D. M.
Rayner
, and P. A.
Hackett
, J. Chem. Phys.
102
, 3129
–3134
(1995
).84.
E. M.
Spain
and M. D.
Morse
, J. Phys. Chem.
96
, 2479
–2486
(1992
).85.
L. M.
Russon
, S. A.
Heidecke
, M. K.
Birke
, J.
Conceicao
, M. D.
Morse
, and P. B.
Armentrout
, J. Chem. Phys.
100
, 4747
–4755
(1994
).86.
D. D.
Wagman
, W. H.
Evans
, V. B.
Parker
, R. H.
Schumm
, I.
Halow
, S. M.
Bailey
, K. L.
Churney
, and R. L.
Nuttall
, “The NBS tables of chemical thermodynamic properties. Selected values for inorganic and C1 and C2 organic substances in SI units
,” J. Phys. Chem. Ref. Data
11
, Suppl. 2
(1982
).87.
B.
Ruscic
and D. H.
Bross
, Active Thermochemical Tables (ATcT) values based on version 1.122r of the Thermochemical Network, 2021; available at ATcT.anl.gov.88.
S.
Taylor
, E. M.
Spain
, and M. D.
Morse
, J. Chem. Phys.
92
, 2710
–2720
(1990
).89.
L. M.
Russon
, S. A.
Heidecke
, M. K.
Birke
, J.
Conceicao
, P. B.
Armentrout
, and M. D.
Morse
, Chem. Phys. Lett.
204
, 235
–240
(1993
).90.
C. A.
Arrington
, T.
Blume
, M. D.
Morse
, M.
Doverstaal
, and U.
Sassenberg
, J. Phys. Chem.
98
, 1398
–1406
(1994
).91.
S.
Taylor
, E. M.
Spain
, and M. D.
Morse
, J. Chem. Phys.
92
, 2698
–2709
(1990
).92.
S.
Taylor
, G. W.
Lemire
, Y. M.
Hamrick
, Z.
Fu
, and M. D.
Morse
, J. Chem. Phys.
89
, 5517
–5523
(1988
).93.
M. D.
Morse
, G. P.
Hansen
, P. R. R.
Langridge-Smith
, L.-S.
Zheng
, M. E.
Geusic
, D. L.
Michalopoulos
, and R. E.
Smalley
, J. Chem. Phys.
80
, 5400
–5405
(1984
).94.
J. C.
Pinegar
, J. D.
Langenberg
, C. A.
Arrington
, E. M.
Spain
, and M. D.
Morse
, J. Chem. Phys.
102
, 666
–674
(1995
).95.
Y.
Qian
, Y. W.
Ng
, Z.
Chen
, and A. S. C.
Cheung
, J. Chem. Phys.
139
, 194303
(2013
).96.
S. A.
McDonald
, S. F.
Rice
, R. W.
Field
, and C.
Linton
, J. Chem. Phys.
93
, 7676
–7686
(1990
).97.
T. C.
Steimle
, D. M.
Goodridge
, and C.
Linton
, J. Chem. Phys.
107
, 3723
–3725
(1997
).98.
P.
Carette
and A.
Hocquet
, J. Mol. Spectrosc.
131
, 301
–324
(1988
).99.
C.
Linton
, S.
McDonald
, S.
Rice
, M.
Dulick
, Y. C.
Liu
, and R. W.
Field
, J. Mol. Spectrosc.
101
, 332
–343
(1983
).100.
K.
Schofield
, J. Phys. Chem. A
110
, 6938
–6947
(2006
).101.
S.
Brutti
, T.
Terai
, M.
Yamawaki
, M.
Yasumoto
, G.
Balducci
, G.
Gigli
, and A.
Ciccioli
, Rapid Commun. Mass Spectrom.
19
, 2251
–2258
(2005
).© 2021 Author(s). Published under an exclusive license by AIP Publishing.
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