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

using model chemistry: HF/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at HF/3-21G*
 hartrees
Energy at 0K-697.754452
Energy at 298.15K-697.762866
Nuclear repulsion energy353.894281
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 HF/3-21G*
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 3350 3023 3.43      
2 A 3349 3023 10.18      
3 A 3324 3000 15.37      
4 A 3320 2996 30.78      
5 A 3245 2929 44.53      
6 A 3240 2924 3.91      
7 A 1692 1527 0.43      
8 A 1684 1520 15.97      
9 A 1680 1516 14.87      
10 A 1671 1508 2.32      
11 A 1611 1454 0.69      
12 A 1601 1446 0.08      
13 A 1296 1170 147.64      
14 A 1281 1157 5.99      
15 A 1280 1155 7.00      
16 A 1255 1133 7.29      
17 A 1255 1133 4.74      
18 A 1126 1017 335.96      
19 A 1069 965 357.47      
20 A 819 739 173.98      
21 A 814 735 73.46      
22 A 685 619 30.45      
23 A 549 495 7.17      
24 A 434 392 26.18      
25 A 305 276 25.14      
26 A 300 271 18.45      
27 A 164 148 1.48      
28 A 118 106 0.23      
29 A 114 103 5.47      
30 A 67 61 3.53      

Unscaled Zero Point Vibrational Energy (zpe) 21349.0 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 19269.6 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 HF/3-21G*
ABC
0.13865 0.08793 0.07427

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/3-21G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 -0.875 -0.287
O2 -0.000 -0.965 1.162
O3 -1.229 0.071 -0.667
O4 1.230 0.071 -0.666
C5 -1.774 1.067 0.263
C6 1.773 1.067 0.263
H7 -2.815 1.162 0.011
H8 2.815 1.162 0.011
H9 -1.650 0.722 1.276
H10 -1.268 2.009 0.116
H11 1.267 2.009 0.116
H12 1.649 0.723 1.276

Atom - Atom Distances (Å)
  S1 O2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12
S11.45171.59731.59722.68722.68713.48773.48772.77803.17643.17612.7780
O21.45172.43472.43482.84282.84303.71113.71142.36233.39773.39782.3626
O31.59732.43472.45931.46723.29762.04044.24362.09162.09063.25623.5337
O41.59722.43482.45933.29811.46724.24402.04043.53403.25692.09062.0916
C52.68722.84281.46723.29813.54701.07604.59661.07711.07933.18693.5863
C62.68712.84303.29761.46723.54704.59661.07603.58653.18701.07931.0771
H73.48773.71112.04044.24401.07604.59665.63041.77551.76754.17104.6612
H83.48773.71144.24362.04044.59661.07605.63044.66144.17111.76751.7755
H92.77802.36232.09163.53401.07713.58651.77554.66141.77393.39283.2992
H103.17643.39772.09063.25691.07933.18701.76754.17111.77392.53513.3925
H113.17613.39783.25622.09063.18691.07934.17101.76753.39282.53511.7739
H122.77802.36263.53372.09163.58631.07714.66121.77553.29923.39251.7739

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 122.485 S1 O4 C6 122.484
O2 S1 O3 105.882 O2 S1 O4 105.887
O3 S1 O4 100.682 O3 C5 H7 105.674
O3 C5 H9 109.631 O3 C5 H10 109.424
O4 C6 H8 105.671 O4 C6 H11 109.425
O4 C6 H12 109.630 H7 C5 H9 111.102
H7 C5 H10 110.186 H8 C6 H11 110.187
H8 C6 H12 111.104 H9 C5 H10 110.693
H11 C6 H12 110.694
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 1.350 0.643    
2 O -0.685 -0.468    
3 O -0.706 -0.462    
4 O -0.706 -0.462    
5 C -0.321 0.400    
6 C -0.321 0.400    
7 H 0.239 -0.015    
8 H 0.239 -0.015    
9 H 0.245 0.002    
10 H 0.211 -0.012    
11 H 0.211 -0.012    
12 H 0.245 0.002    


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.000 2.957 0.569 3.012
CHELPG -0.000 2.857 0.481 2.897
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.189 0.001 0.001
y 0.001 -38.945 4.158
z 0.001 4.158 -48.048
Traceless
 xyz
x 6.308 0.001 0.001
y 0.001 3.673 4.158
z 0.001 4.158 -9.981
Polar
3z2-r2-19.962
x2-y21.757
xy0.001
xz0.001
yz4.158


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.700 0.000 0.000
y 0.000 5.682 -0.132
z 0.000 -0.132 4.868


<r2> (average value of r2) Å2
<r2> 180.905
(<r2>)1/2 13.450