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

using model chemistry: MP2/CEP-121G*

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/CEP-121G*
 hartrees
Energy at 0K-72.378806
Energy at 298.15K-72.386654
HF Energy-71.405882
Nuclear repulsion energy144.918988
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/CEP-121G*
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 3225 3073 8.62      
2 A 3225 3073 10.95      
3 A 3177 3027 44.74      
4 A 3176 3027 2.30      
5 A 3069 2924 13.84      
6 A 3068 2923 77.35      
7 A 1542 1469 8.43      
8 A 1541 1468 16.17      
9 A 1525 1453 13.01      
10 A 1525 1453 3.07      
11 A 1499 1428 0.37      
12 A 1494 1424 4.31      
13 A 1218 1160 150.08      
14 A 1202 1146 16.12      
15 A 1194 1138 12.41      
16 A 1184 1128 4.93      
17 A 1180 1124 0.13      
18 A 1049 1000 0.17      
19 A 1006 958 344.79      
20 A 748 713 127.51      
21 A 677 645 221.56      
22 A 493 470 26.73      
23 A 428 408 0.97      
24 A 386 367 0.15      
25 A 275 262 6.82      
26 A 187 179 3.45      
27 A 168 160 0.62      
28 A 168 160 1.13      
29 A 77 73 3.16      
30 A 72 69 12.18      

Unscaled Zero Point Vibrational Energy (zpe) 19888.6 cm-1
Scaled (by 0.9528) Zero Point Vibrational Energy (zpe) 18949.9 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/CEP-121G*
ABC
0.22668 0.06626 0.05545

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 -0.000 0.248 0.508
O2 0.001 1.545 -0.221
O3 1.170 -0.758 -0.152
O4 -1.170 -0.757 -0.153
C5 2.497 -0.170 -0.004
C6 -2.497 -0.170 -0.004
H7 3.176 -0.940 -0.368
H8 -3.177 -0.939 -0.369
H9 2.582 0.735 -0.611
H10 2.715 0.052 1.047
H11 -2.715 0.050 1.048
H12 -2.583 0.736 -0.609

Atom - Atom Distances (Å)
  S1 O2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12
S11.48801.67781.67782.58302.58293.50283.50272.85662.77502.77482.8564
O21.48802.58342.58333.03623.03764.03504.03602.73373.34703.34932.7353
O31.67782.58342.33941.45893.71642.02664.35542.10612.11694.14504.0652
O41.67782.58332.33943.71621.45884.35542.02664.06394.14582.11692.1061
C52.58303.03621.45893.71624.99371.08965.73691.09301.09655.32135.1956
C62.58293.03763.71641.45884.99375.73701.08955.19505.32161.09651.0930
H73.50284.03502.02664.35541.08965.73706.35301.79371.78916.13956.0035
H83.50274.03604.35542.02665.73691.08956.35306.00236.14011.78921.7936
H92.85662.73372.10614.06391.09305.19501.79376.00231.79785.59305.1658
H102.77503.34702.11694.14581.09655.32161.78916.14011.79785.42995.5930
H112.77483.34934.14502.11695.32131.09656.13951.78925.59305.42991.7977
H122.85642.73534.06522.10615.19561.09306.00351.79365.16585.59301.7977

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 110.678 S1 O4 C6 110.671
O2 S1 O3 109.227 O2 S1 O4 109.229
O3 S1 O4 88.400 O3 C5 H7 104.423
O3 C5 H9 110.422 O3 C5 H10 111.080
O4 C6 H8 104.426 O4 C6 H11 111.077
O4 C6 H12 110.424 H7 C5 H9 110.536
H7 C5 H10 109.853 H8 C6 H11 109.857
H8 C6 H12 110.531 H9 C5 H10 110.387
H11 C6 H12 110.384
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability