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

using model chemistry: MP2/TZVP

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/TZVP
 hartrees
Energy at 0K-702.414321
Energy at 298.15K-702.422188
HF Energy-701.356610
Nuclear repulsion energy344.396615
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/TZVP
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 3229 3061 4.61      
2 A 3229 3061 9.96      
3 A 3176 3010 36.08      
4 A 3176 3010 1.75      
5 A 3082 2921 13.70      
6 A 3081 2921 67.24      
7 A 1535 1455 7.45      
8 A 1532 1453 19.28      
9 A 1513 1434 8.46      
10 A 1511 1433 2.69      
11 A 1506 1428 4.47      
12 A 1503 1425 0.96      
13 A 1233 1169 152.22      
14 A 1222 1159 14.63      
15 A 1214 1150 13.81      
16 A 1205 1142 3.43      
17 A 1202 1139 0.32      
18 A 1073 1017 0.66      
19 A 1029 975 342.99      
20 A 757 717 132.73      
21 A 686 650 221.97      
22 A 503 477 27.21      
23 A 431 408 0.33      
24 A 391 370 0.18      
25 A 281 266 7.31      
26 A 189 179 3.37      
27 A 164 156 0.60      
28 A 161 153 0.38      
29 A 69 66 11.55      
30 A 59 56 3.10      

Unscaled Zero Point Vibrational Energy (zpe) 19970.4 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 18929.9 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/TZVP
ABC
0.23166 0.06700 0.05627

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/TZVP

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.011 0.018 -0.102
O2 0.016 1.649 0.022
O3 1.463 -0.921 0.025
O4 -1.503 -0.914 0.019
C5 2.586 -0.005 0.057
C6 -2.611 0.012 0.053
H7 3.430 -0.663 0.133
H8 -3.405 -0.640 0.121
H9 2.610 0.565 -0.852
H10 2.505 0.637 0.915
H11 -2.433 0.659 0.894
H12 -2.541 0.599 -0.766

Atom - Atom Distances (Å)
  S1 O2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12
S11.63631.73331.78202.58032.62703.49393.48642.76022.76402.71602.7005
O21.63632.94972.97973.05743.09554.12524.11752.94502.83232.78132.8743
O31.73332.94972.96521.45014.17951.98724.87712.07302.07514.29244.3551
O41.78202.97972.96524.18911.44534.94031.92524.45734.39002.02641.9968
C52.58033.05741.45014.18915.19771.07246.02571.07411.07465.13155.2283
C62.62703.09554.17951.44535.19776.07941.02985.32845.22621.07661.0100
H73.49394.12521.98724.94031.07246.07946.83551.77521.77666.05786.1689
H83.48644.11754.87711.92526.02571.02986.83556.21216.09891.79771.7520
H92.76022.94502.07304.45731.07415.32841.77526.21211.77245.33795.1524
H102.76402.83232.07514.39001.07465.22621.77666.09891.77244.93795.3193
H112.71602.78134.29242.02645.13151.07666.05781.79775.33794.93791.6654
H122.70052.87434.35511.99685.22831.01006.16891.75205.15245.31931.6654

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 107.966 S1 O4 C6 108.525
O2 S1 O3 122.153 O2 S1 O4 121.251
O3 S1 O4 115.019 O3 C5 H7 102.928
O3 C5 H9 109.512 O3 C5 H10 109.660
O4 C6 H8 100.784 O4 C6 H11 106.010
O4 C6 H12 107.501 H7 C5 H9 111.584
H7 C5 H10 111.685 H8 C6 H11 117.159
H8 C6 H12 118.383 H9 C5 H10 111.149
H11 C6 H12 105.866
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability