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Sulfur dimer

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Gas phase thermochemistry data

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, Constants of diatomic molecules, NIST Free Links, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Quantity Value Units Method Reference Comment
Deltafgas30.736 ± 0.072kcal/molReviewCox, Wagman, et al., 1984CODATA Review value
Deltafgas30.736kcal/molReviewChase, 1998Data last reviewed in September, 1977
Quantity Value Units Method Reference Comment
gas,1 bar54.5332 ± 0.0024cal/mol*KReviewCox, Wagman, et al., 1984CODATA Review value
gas,1 bar54.539cal/mol*KReviewChase, 1998Data last reviewed in September, 1977

Gas Phase Heat Capacity (Shomate Equation)

Cp° = A + B*t + C*t2 + D*t3 + E/t2
H° − H°298.15= A*t + B*t2/2 + C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − E/(2*t2) + G
    Cp = heat capacity (cal/mol*K)
    H° = standard enthalpy (kcal/mol)
    S° = standard entropy (cal/mol*K)
    t = temperature (K) / 1000.

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View table.

Temperature (K) 298. - 6000.
A 8.009831
B 1.210651
C -0.253267
D 0.021488
E -0.050648
F 28.12751
G 63.59749
H 30.73621
ReferenceChase, 1998
Comment Data last reviewed in September, 1977

Reaction thermochemistry data

Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, Ion clustering data, Constants of diatomic molecules, NIST Free Links, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled as indicated in comments:
B - John E. Bartmess
RCD - Robert C. Dunbar

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

(HS2- bullet 4294967295Sulfur dimer) + Sulfur dimer = HS2-

By formula: (HS2- bullet 4294967295S2) + S2 = HS2-

Quantity Value Units Method Reference Comment
Deltar81.6 ± 3.7kcal/molN/AEntfellner and Boesl, 2009gas phase; B
Deltar46.7 ± 3.7kcal/molTherMoran and Ellison, 1988gas phase; B

(OS2- bullet 4294967295Sulfur dimer) + Sulfur dimer = OS2-

By formula: (OS2- bullet 4294967295S2) + S2 = OS2-

Quantity Value Units Method Reference Comment
Deltar113.29 ± 0.39kcal/molN/ANimlos and Ellison, 1986gas phase; B

(Vanadium ion (1+) bullet Sulfur dimer) + Sulfur dimer = (Vanadium ion (1+) bullet 2Sulfur dimer)

By formula: (V+ bullet S2) + S2 = (V+ bullet 2S2)

Quantity Value Units Method Reference Comment
Deltar68.4 ± 4.4kcal/molCIDTSchroeder, Kretzschmar, et al., 2003RCD

(Molybdenum ion (1+) bullet Sulfur dimer) + Sulfur dimer = (Molybdenum ion (1+) bullet 2Sulfur dimer)

By formula: (Mo+ bullet S2) + S2 = (Mo+ bullet 2S2)

Quantity Value Units Method Reference Comment
Deltar71.6 ± 3.0kcal/molCIDTSchroeder, Kretzschmar, et al., 2003RCD

Vanadium ion (1+) + Sulfur dimer = (Vanadium ion (1+) bullet Sulfur dimer)

By formula: V+ + S2 = (V+ bullet S2)

Quantity Value Units Method Reference Comment
Deltar74.8 ± 3.2kcal/molCIDTSchroeder, Kretzschmar, et al., 2003RCD

Molybdenum ion (1+) + Sulfur dimer = (Molybdenum ion (1+) bullet Sulfur dimer)

By formula: Mo+ + S2 = (Mo+ bullet S2)

Quantity Value Units Method Reference Comment
Deltar78.7 ± 2.5kcal/molCIDTSchroeder, Kretzschmar, et al., 2003RCD

Gas phase ion energetics data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data evaluated as indicated in comments:
L - Sharon G. Lias

Data compiled as indicated in comments:
B - John E. Bartmess
LL - Sharon G. Lias and Joel F. Liebman
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

View reactions leading to S2+ (ion structure unspecified)

Quantity Value Units Method Reference Comment
IE (evaluated)9.356 ± 0.002eVN/AN/AL

Electron affinity determinations

EA (eV) Method Reference Comment
1.670 ± 0.015LPESMoran and Ellison, 1988B
1.663 ± 0.040LPESCelotta, Bennett, et al., 1974B
1.565 ± 0.050LPDHunsicker, Jones, et al., 1995B
>0.86 ± 0.10R-ADillard and Franklin, 1968S- + COS -> S2- + CO. Also S2- + COS -> S3- + CO, etc. to n=6; B
>2.50 ± 0.80EIAEThynne, 1972From CS2; B

Ionization energy determinations

IE (eV) Method Reference Comment
9.4PEBender, Carnovale, et al., 1988LL
9.356 ± 0.002PILiao and Ng, 1986LBLHLM
9.6 ± 0.2EIRosinger, Grade, et al., 1983LBLHLM
9.5 ± 0.2EIGrade, Wienecke, et al., 1983LBLHLM
9.5 ± 0.3EILau, Brittain, et al., 1982LBLHLM
9.38 ± 0.03DERCoppens, Reynaert, et al., 1979LLK
9.36 ± 0.02EITal'roze, Butkovskaya, et al., 1978LLK
9.8 ± 0.3EISmoes, Drowart, et al., 1977LLK
10.1 ± 0.3EIPiacente, Bardi, et al., 1976LLK
9.4 ± 0.1EIHildenbrand, 1975LLK
9.38 ± 0.01PEGolob, Jonathan, et al., 1975LLK
9.30PEBerkowitz, 1975LLK
9.8 ± 0.5EIMuenow and Margrave, 1972LLK
9.42 ± 0.10EIHildenbrand, 1972LLK
9.40 ± 0.05SDonovan, Husain, et al., 1970RDSH
9.32SBarrow, duParcq, et al., 1969RDSH
9.36 ± 0.02PIBerkowitz and Lifshitz, 1968RDSH
9.55PEWu and Fehlner, 1976Vertical value; LLK
9.56PEBerkowitz, 1975Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
S+14.732 ± 0.005SPILiao and Ng, 1986LBLHLM
S+13.5 ± 0.5SEIPiacente, Bardi, et al., 1976LLK
S+14.74 ± 0.01SPIBerkowitz and Chupka, 1969RDSH

Anion protonation reactions

S2- + Hydrogen cation = HS2

By formula: S2- + H+ = HS2

Quantity Value Units Method Reference Comment
Deltar329.9 ± 3.7kcal/molD-EAMoran and Ellison, 1988gas phase; B
Quantity Value Units Method Reference Comment
Deltar>344.60kcal/molIMRBGoodings, Bohme, et al., 1986gas phase; S- deprotonates H2S, Sn- for n>=2, does not.; B

Ion clustering data

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, Constants of diatomic molecules, NIST Free Links, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled as indicated in comments:
B - John E. Bartmess
RCD - Robert C. Dunbar

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

(HS2- bullet 4294967295Sulfur dimer) + Sulfur dimer = HS2-

By formula: (HS2- bullet 4294967295S2) + S2 = HS2-

Quantity Value Units Method Reference Comment
Deltar81.6 ± 3.7kcal/molN/AEntfellner and Boesl, 2009gas phase; B
Deltar46.7 ± 3.7kcal/molTherMoran and Ellison, 1988gas phase; B

Molybdenum ion (1+) + Sulfur dimer = (Molybdenum ion (1+) bullet Sulfur dimer)

By formula: Mo+ + S2 = (Mo+ bullet S2)

Quantity Value Units Method Reference Comment
Deltar78.7 ± 2.5kcal/molCIDTSchroeder, Kretzschmar, et al., 2003RCD

(Molybdenum ion (1+) bullet Sulfur dimer) + Sulfur dimer = (Molybdenum ion (1+) bullet 2Sulfur dimer)

By formula: (Mo+ bullet S2) + S2 = (Mo+ bullet 2S2)

Quantity Value Units Method Reference Comment
Deltar71.6 ± 3.0kcal/molCIDTSchroeder, Kretzschmar, et al., 2003RCD

(OS2- bullet 4294967295Sulfur dimer) + Sulfur dimer = OS2-

By formula: (OS2- bullet 4294967295S2) + S2 = OS2-

Quantity Value Units Method Reference Comment
Deltar113.29 ± 0.39kcal/molN/ANimlos and Ellison, 1986gas phase; B

Vanadium ion (1+) + Sulfur dimer = (Vanadium ion (1+) bullet Sulfur dimer)

By formula: V+ + S2 = (V+ bullet S2)

Quantity Value Units Method Reference Comment
Deltar74.8 ± 3.2kcal/molCIDTSchroeder, Kretzschmar, et al., 2003RCD

(Vanadium ion (1+) bullet Sulfur dimer) + Sulfur dimer = (Vanadium ion (1+) bullet 2Sulfur dimer)

By formula: (V+ bullet S2) + S2 = (V+ bullet 2S2)

Quantity Value Units Method Reference Comment
Deltar68.4 ± 4.4kcal/molCIDTSchroeder, Kretzschmar, et al., 2003RCD

Constants of diatomic molecules

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, NIST Free Links, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Klaus P. Huber and Gerhard H. Herzberg

Data collected through July, 1977

Symbols used in the table of constants
SymbolMeaning
State electronic state and / or symmetry symbol
Te minimum electronic energy (cm-1)
ωe vibrational constant – first term (cm-1)
ωexe vibrational constant – second term (cm-1)
ωeye vibrational constant – third term (cm-1)
Be rotational constant in equilibrium position (cm-1)
αe rotational constant – first term (cm-1)
γe rotation-vibration interaction constant (cm-1)
De centrifugal distortion constant (cm-1)
βe rotational constant – first term, centrifugal force (cm-1)
re internuclear distance (Å)
Trans. observed transition(s) corresponding to electronic state
ν00 position of 0-0 band (units noted in table)
Diatomic constants for 32S2
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
Additional progressions and unassigned bands in the absorption spectrum 65700 - 71900 cm-1.
Mahajan, Lakshminarayana, et al., 1976
F 2 (66333) [827] 1 H         F larrow X 66384 1 H
Donovan, Husain, et al., 1970; Mahajan, Lakshminarayana, et al., 1976
(66229) [827] 1 H         F larrow X 66280 1 H
Donovan, Husain, et al., 1970; Mahajan, Lakshminarayana, et al., 1976
E 2 (65933) [818] 1 H         E larrow X 65980 1 H
Donovan, Husain, et al., 1970; Mahajan, Lakshminarayana, et al., 1976
(65829) [818] 1 H         E larrow X 65876 1 H
Donovan, Husain, et al., 1970; Mahajan, Lakshminarayana, et al., 1976
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
j 3          j rarrow (b) 4 V 56077.7 H
missing citation
i  [785.0] H         i rarrow (b) 4 V 55099.3 H
missing citation
h  819.6 H 2.70        h rarrow (b) 4 V 51461.4 H
missing citation
D 3Piu,r 58978.7 793.8 H 4.00  [0.3073]   [1.85E-7]  [1.8546] D lrarrow X V 59012.50 Z
missing citation; Tanaka and Ogawa, 1962; Ricks and Barrow, 1969
58691.7 793.8 H 4.00  [0.3066]   [1.85E-7]  [1.8546] D lrarrow X V 58725.47 Z
missing citation; Tanaka and Ogawa, 1962; Ricks and Barrow, 1969
58518.3 793.8 H 4.00  [0.3059]   [1.85E-7]  [1.8546] D lrarrow X V 58552.05 Z
missing citation; Tanaka and Ogawa, 1962; Ricks and Barrow, 1969
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
g 1Deltau x+ 52187.7 816.0 H 2.70  [0.3210]   (2.0E-7)  [1.8125] g lrarrow a 5 V 52244.66 Z
missing citation; Barrow and Du Parcq, 1968
C' (3Sigmau-) 6          C' rarrow X V 56621.6 H
missing citation
C 3Sigmau- 55581.7 829.15 Z 3.34  0.3219 7 0.00138 -2.3E-4 [2.17E-7]  1.8100 C lrarrow X V 55633.3 8 Z
Wieland, Wehrli, et al., 1934; missing citation; Tanaka and Ogawa, 1962; missing citation
f 1Deltau x+ 36875.45 438.32 Z 2.70 -0.005 0.22704 9 0.00178  (2.43E-7)  2.1551 f lrarrow a 10 R 36743.53 Z
Barrow and Du Parcq, 1968; Carleer and Colin, 1970
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
B' 3Pig,i     11      B' rarrow A V 
Narasimham, 1964; Narasimham and Apparao, 1966; missing citation
z+ (14504) [533.7] 12 (Z)   [0.2441] 11     [2.078] B' rarrow A V 13451.95 13 Z
Narasimham, 1964; Narasimham and Apparao, 1966; missing citation
z+ (14295)    [0.2435] 11      B' rarrow A V 13320.64 13 Z
Narasimham, 1964; Narasimham and Apparao, 1966; missing citation
           B' rarrow A' V 
Meakin and Barrow, 1962; Narasimham, 1964; Narasimham and Apparao, 1966; missing citation
           B' rarrow A' V 14144.37 Z
Meakin and Barrow, 1962; Narasimham, 1964; Narasimham and Apparao, 1966; missing citation
           B' rarrow A' V 14318.07 Z
Meakin and Barrow, 1962; Narasimham, 1964; Narasimham and Apparao, 1966; missing citation
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
B 3Sigmau- 31835 434.0 14 2.75 14  0.2239 14 15 16 0.0023 14  [2.4E-7] 14  2.170 B lrarrow X 17 18 R 31689 19
Olsson, 1938; Ikenoue, 1960; Barrow and du Parcq, 1965
A 3Sigmau+(0u-) z+ 1078 20 482.75 Z 2.58  0.2301 0.0021    2.141  
A 3Sigmau+(1u) z+1000.49 482.15 Z 2.56  0.2259 21 0.0014    2.161  
A' 3Deltau ,i 
A' 3Deltau,i z+ 383 488.16 Z 2.51  0.2285 0.0014    2.148  
z 22 488.25 Z 2.52  0.2285 0.0015      
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
b 1Sigmag+ y (699.7) 23 (3.4) 23         
a 1Deltag x 24 702.35 Z 3.09  0.29262 0.00173  (2.01E-7)  1.8983  
X 3Sigmag- 0 25 725.65 Z 2.844  0.29547 26 0.001570 27 -1.82E-6 [1.90E-7]  1.8892 28  
Yee, Barrow, et al., 1972; Freedman and Jones, 1975
EPR and
Wayne, Davies, et al., 1974
mol. Beam rf sp.
Channappa, Pendlebury, et al., 1967

Notes

1Measurements of Mahajan, Lakshminarayana, et al., 1976; assignments of higher members of the two progressions appear uncertain.
2The two states E and F are believed to be members of two Rydberg series, one converging to X 2Pi1/2 of S2+ (C,E,...), the other to X 2Pi3/2 (F...). The apparent doublet structure of the bands is tentatively attributed to (OmegaOc, w) coupling Donovan, Husain, et al., 1970.
3Only v=0 observed.
4The lower state(s) of the three systems could be either a or b; see Barrow and du Parcq, 1965, Barrow and Du Parcq, 1968. Bands originating from the j level have double heads, all others single heads. No absorption corresponding to these transitions has been reported, although strong absorption from a 1Deltag (glarrowa, flarrowa) has been seen in the flash photolysis of S2Cl2 Donovan, Husain, et al., 1968, Donovan, Husain, et al., 1970 and COS Carleer and Colin, 1970. Tanaka and Ogawa, 1962 use c and c' instead of h and i, respectively.
5Called d rarrowx by Tanaka and Ogawa, 1962. Observed in absorption in the flash photolysis of S2Cl2 Donovan, Husain, et al., 1970.
6v=0 only; system e-X of Tanaka and Ogawa, 1962.
7Spin splitting constants lambda0 = -11.61, gamma0 = +0.033.
8missing note
9Breaking-off in emission above v'= 10 Asundi, 1965, Narasimham and Gopal, 1965. In absorption Carleer and Colin, 1970 bands with v'=11 and 12 have been observed, the rotational lines being only very slightly broadened. Predissociation probably into 3Deltau from 3P + 1D.
10First observed by Rosen and Desirant, 1935, Haranath, 1963. Vibrational numbering established by isotope investigations Narasimham and Brody, 1964, Narasimham and Bhagvat, 1965.
11The last observed levels in emission are J'=33 and 15 in 3Pi2 and 3Pi1, respectively; higher levels, and presumably all levels of the unobserved 3Pi0 component, are predissociated.
12Fragments of two V shaded emission bands at v0 = 13451.9 and 13985.5 cm-1 have been observed by Meakin and Barrow, 1962 and assigned Barrow and du Parcq, 1965 to a 1Pig rarrow 1Sigmau- transition later called e rarrowc Barrow and Du Parcq, 1968. The first band (B' ~ 0.244, B"~ 0.229, predissociated except for low J) is undoubtedly the 0-0 band of the B' 3Pigl rarrow A 3Sigmau+(0u-) transition, the second presumably the corresponding 1-0 band since the DeltaG(1/2) value agrees fairly well with we ~ 500 as estimated from isotope shift studies Narasimham and Apparao, 1966. However, no emission from levels having v'> 0 was reported by other investigators.
13Origins of the 3Pi2g rarrow 3Sigmau+(1u) and 3Pi1g rarrow 3Sigmau+(0u-) transitions.
14Vibrational constants from Olsson, 1938, rotational constants from Ikenoue, 1960. Barrow and du Parcq, 1965 give B0 = 0.2235, alphae = 0.0018, (i.e. Be = 0.2244) without mentioning whether this is based on a revised analysis. This state is heavily perturbed by a 3Piu state Barrow and du Parcq, 1965; as a result none of the constants are very meaningful.
15Spin splitting constant lambda ~ -4.7 for v=0,2,4 (v=6,7 are also inverted) but +9.5 for v=1,3,5 Meyer and Crosley, 1973; see 14. Barrow and du Parcq, 1965 give gamma=0.05 for v=0,1,4.
16Breaking-off in emission (at low pressures) above J=61 in v = 8, and J=36 in v=9 (F1 component) Ricks and Barrow, 1969, 2. J=58 in v = 8, and J=37 in v=9 (F2 component) Ricks and Barrow, 1969, 2. J=59 in v = 8, and J=35 in v=9 (F3 component) Ricks and Barrow, 1969, 2. These together with similar breaking-off points in 34S2 and 32S34S yield a predissociation limit at 35636.3 cm-1 above X 3Sigmag- (v=0,J=0) of 32S2. Bands with v'geq10 are absent in emission [except at high pressure Asundi, 1931, Asundi, 1934, Sugden and Demerdache, 1962] and broadened in absorption. Above v'=18 there is strongly increased diffuseness indicating a second predissociation Herzberg and Mundie, 1940. Pressure effects on the intensity distribution of the absorption bands Kondratjew and Olsson, 1936, Herman and Felenbok, 1963.
17Lifetime tau(v=0...3) = 17 ns Smith, 1969 [phase shift method Smith, 1969]; tau(v=3,4) = 19.5 ns Meyer and Crosley, 1973, 2 [Hanle effect Meyer and Crosley, 1973, 2]. The most recent measurements [single-photon time correlation McGee and Weston, 1977] give tau = 45.0 ns McGee and Weston, 1977.
18Secondary heads on the short-wavelength side of the bands are formed by the forbidden T(R31) branches [ Meakin and Barrow, 1962, see also Tatum and Watson, 1971]. Experimental Franck-Condon factors (v"=0...25) from resonance fluorescence series with v'=3,4 Meyer and Crosley, 1973, 3, see also Yee, Barrow, et al., 1972. Theoretical Franck-Condon factors Herman and Felenbok, 1963, Smith and Liszt, 1971 [see, however, 14] 32S2/34S2 isotope shifts Chaudhry, Upadhya, et al., 1970. Absorption in inert gas matrices at low temperature Brewer, Brabson, et al., 1965.
19The observed position of v'=0 relative to X 3Sigmag-(v"=0) is at 31659 cm-1; strong vibrational perturbation.
20Lambda = -39.0 (and gamma = +0.008) derived fron the observed F1(N) - F2(N) splittings Narasimham, Apparao, et al., 1976.
21B+(F2) - B-(F1) = +0.0021.
22z ~ 22000 cm-1, very rough estimate based on the fact that the upper state of B'rarrow A' is predissociated and, therefore, cannot lie below the dissociation limit 3P+ 3P. A similar value is obtained by extrapolation of the vibrational levels in A' and X to their common limit 3P + 3P.
23Assuming that b is the lower state of the three singlet systems originating from h, i, j.
24 Carleer and Colin, 1970 estimate x ~ 4700 cm-1.
25Refers to the F2 component.
26Spin splitting constants lambdav= +11.82+0.05(v+1/2) + 0.0024(v+1/2)2, gammav= - 0.00659-0.000126(v+1/2), vleq27, from Barrow and Yee, 1974 who give also data for 34S2; see also Barrow and Ketteringham, 1963, Barrow and du Parcq, 1965, Wayne, Davies, et al., 1974. From the pure rotational Raman spectrum Freedman and Jones, 1975 obtain B0 = 0.29443.
27missing note
28Raman sp. 1
29From the predissociation limit in B 3Sigmau- assuming dissociation at this limit into 3P2 + 3P1 Ricks and Barrow, 1969, 2. The value given here (35240.2 cm-1) is relative to the lowest existing level in X 3Sigmag-(v=0), i.e. J=0, in accordance with the definition of D00 but at variance with the value given by Ricks and Barrow, 1969, 2 which refers to a hypothetical level (N=0) of the F2 component at 23.1 cm-1 above J=0. D00=4.38 eV by photoionization mass-spectrometry Berkowitz and Chupka, 1969, D00= 4.41 eV from thermal measurements Budininkas, Edwards, et al., 1968. See also Drowart and Goldfinger, 1966.
30By photoionization mass-spectrometry Berkowitz and Lifshitz, 1968, Berkowitz and Chupka, 1969.
31This number, given or implied by Barrow and du Parcq, 1965, Barrow, duParcq, et al., 1969 refers presumably to the F2 levels in both upper and lower state.
32Raman spectra in solid matrices Barletta, Claassen, et al., 1971, Hopkins and Brown, 1975 yield DeltaG = 717 Barletta, Claassen, et al., 1971, Hopkins and Brown, 1975.

References

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, Constants of diatomic molecules, NIST Free Links, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Cox, Wagman, et al., 1984
Cox, J.D.; Wagman, D.D.; Medvedev, V.A., CODATA Key Values for Thermodynamics, Hemisphere Publishing Corp., New York, 1984, 1. [all data]

Chase, 1998
Chase, M.W., Jr., NIST-JANAF Themochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]

Entfellner and Boesl, 2009
Entfellner, M.; Boesl, U., Photodetachment-photoelectron spectroscopy of disulfanide: the ground and first excited electronic state of HS2 and DS2, Phys. Chem. Chem. Phys., 2009, 11, 15, 2657-2662, https://doi.org/10.1039/b820174a . [all data]

Moran and Ellison, 1988
Moran, S.; Ellison, G.B., Photoelectron Spectroscopy of Sulfur Ions, J. Phys. Chem., 1988, 92, 7, 1794, https://doi.org/10.1021/j100318a021 . [all data]

Nimlos and Ellison, 1986
Nimlos, M.R.; Ellison, G.B., Photoelectron spectroscopy of SO2-, S3-, and S2O-, J. Phys. Chem., 1986, 90, 2574. [all data]

Schroeder, Kretzschmar, et al., 2003
Schroeder, D.; Kretzschmar, I.; Schwarz; Armentrout, P.B., Structure, Thermochemistry, and Reactivityof MSn+ Cations (M=V,Mo; n=1-3) in the Gas Phase, Int. J. Mass Spectrom., 2003, 228, 2-3, 439, https://doi.org/10.1016/S1387-3806(03)00137-4 . [all data]

Celotta, Bennett, et al., 1974
Celotta, R.S.; Bennett, R.A.; Hall, J.L., Laser Photodetachment Determination of the Electron Affinities of OH, NH2, NH, SO2, and S2, J. Chem. Phys., 1974, 60, 5, 1740, https://doi.org/10.1063/1.1681268 . [all data]

Hunsicker, Jones, et al., 1995
Hunsicker, S.; Jones, R.O.; Gantefor, G., Rings and chains in sulfur cluster anions S- to S-9(-): Theory (simulated annealing) and experiment (photoelectron detachment), J. Chem. Phys., 1995, 102, 15, 5917, https://doi.org/10.1063/1.469326 . [all data]

Dillard and Franklin, 1968
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Notes

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