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All results from a given calculation for C2H6O3S (Sulfurous acid, dimethyl ester)

using model chemistry: MP2/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at MP2/6-31G**
 hartrees
Energy at 0K-702.219914
Energy at 298.15K-702.227789
HF Energy-701.234887
Nuclear repulsion energy344.382262
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at MP2/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3275 3067 7.29      
2 A 3275 3067 9.77      
3 A 3223 3018 30.39      
4 A 3222 3018 10.78      
5 A 3122 2924 11.34      
6 A 3121 2923 68.60      
7 A 1568 1468 5.04      
8 A 1567 1467 17.82      
9 A 1550 1452 9.98      
10 A 1550 1451 0.80      
11 A 1513 1417 0.28      
12 A 1508 1413 8.75      
13 A 1261 1181 138.12      
14 A 1217 1140 3.56      
15 A 1209 1132 15.14      
16 A 1202 1125 3.39      
17 A 1199 1122 0.06      
18 A 1080 1011 0.17      
19 A 1035 970 345.71      
20 A 769 720 122.92      
21 A 705 660 225.93      
22 A 510 477 28.55      
23 A 436 408 0.70      
24 A 398 373 0.00      
25 A 275 257 8.14      
26 A 190 178 3.85      
27 A 159 149 0.72      
28 A 158 148 0.66      
29 A 72 68 3.48      
30 A 67 63 10.68      

Unscaled Zero Point Vibrational Energy (zpe) 20216.3 cm-1
Scaled (by 0.9365) Zero Point Vibrational Energy (zpe) 18932.6 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at MP2/6-31G**
ABC
0.22922 0.06731 0.05629

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 -0.000 0.237 0.436
O2 0.001 1.490 -0.339
O3 1.158 -0.793 -0.170
O4 -1.158 -0.792 -0.172
C5 2.476 -0.209 -0.089
C6 -2.476 -0.209 -0.089
H7 3.146 -0.978 -0.456
H8 -3.147 -0.979 -0.454
H9 2.544 0.679 -0.714
H10 2.738 0.042 0.941
H11 -2.736 0.042 0.941
H12 -2.545 0.678 -0.714

Atom - Atom Distances (Å)
  S1 O2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12
S11.47311.66421.66402.57022.57003.48893.48872.82642.79102.78932.8277
O21.47312.56482.56473.01253.01413.99984.00182.69523.35053.35062.6985
O31.66422.56482.31671.44363.68222.01714.31872.09312.10374.13554.0223
O41.66402.56472.31673.68191.44364.31822.01724.02034.13692.10372.0930
C52.57023.01251.44363.68194.95251.08425.68731.08801.09145.31935.1376
C62.57003.01413.68221.44364.95255.68711.08435.13625.32081.09141.0880
H73.48893.99982.01714.31821.08425.68716.29351.78191.77706.13215.9337
H83.48874.00184.31872.01725.68731.08436.29355.93296.13331.77701.7820
H92.82642.69522.09314.02031.08805.13621.78195.93291.78365.57005.0892
H102.79103.35052.10374.13691.09145.32081.77706.13331.78365.47435.5729
H112.78933.35064.13552.10375.31931.09146.13211.77705.57005.47431.7836
H122.82772.69854.02232.09305.13761.08805.93371.78205.08925.57291.7836

picture of Sulfurous acid, dimethyl ester state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 O3 C5 111.393 S1 O4 C6 111.386
O2 S1 O3 109.523 O2 S1 O4 109.526
O3 S1 O4 88.227 O3 C5 H7 104.980
O3 C5 H9 110.753 O3 C5 H10 111.409
O4 C6 H8 104.983 O4 C6 H11 111.410
O4 C6 H12 110.746 H7 C5 H9 110.228
H7 C5 H10 109.523 H8 C6 H11 109.520
H8 C6 H12 110.236 H9 C5 H10 109.848
H11 C6 H12 109.847
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability