return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: B3LYP/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at B3LYP/6-31+G**
 hartrees
Energy at 0K-703.639568
Energy at 298.15K-703.647275
Nuclear repulsion energy346.132895
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 B3LYP/6-31+G**
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 3159 3046 3.39      
2 A 3158 3045 11.04      
3 A 3134 3022 17.72      
4 A 3131 3019 22.89      
5 A 3052 2943 64.81      
6 A 3048 2939 9.96      
7 A 1511 1456 2.45      
8 A 1502 1448 17.36      
9 A 1501 1448 11.83      
10 A 1490 1436 5.38      
11 A 1463 1410 2.34      
12 A 1455 1402 0.04      
13 A 1185 1142 20.34      
14 A 1182 1139 0.04      
15 A 1167 1125 57.83      
16 A 1164 1122 0.40      
17 A 1159 1117 75.50      
18 A 1010 974 192.43      
19 A 981 946 143.15      
20 A 658 635 89.18      
21 A 628 606 281.48      
22 A 582 562 18.65      
23 A 466 449 0.00      
24 A 333 321 10.20      
25 A 267 257 13.63      
26 A 259 250 11.87      
27 A 148 143 1.78      
28 A 97 93 2.67      
29 A 82 79 0.00      
30 A 51 49 1.31      

Unscaled Zero Point Vibrational Energy (zpe) 19509.6 cm-1
Scaled (by 0.9642) Zero Point Vibrational Energy (zpe) 18811.2 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 B3LYP/6-31+G**
ABC
0.13513 0.08332 0.07113

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31+G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 -0.000 -0.860 -0.324
O2 0.001 -1.061 1.144
O3 1.296 0.133 -0.688
O4 -1.298 0.132 -0.687
C5 1.803 1.042 0.313
C6 -1.801 1.044 0.313
H7 2.849 1.209 0.053
H8 -2.846 1.217 0.051
H9 1.256 1.989 0.275
H10 1.730 0.601 1.310
H11 -1.733 0.602 1.311
H12 -1.248 1.987 0.276

Atom - Atom Distances (Å)
  S1 O2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12
S11.48201.67301.67272.69702.69663.54163.54263.17022.79232.79473.1660
O21.48202.54222.54212.89202.89283.80263.80633.41112.40432.40813.4070
O31.67302.54222.59361.44393.37992.02984.34472.09092.09773.65893.2926
O41.67272.54212.59363.38251.44394.34812.02953.30043.65682.09772.0911
C52.69702.89201.44393.38253.60421.09104.65961.09441.09303.69993.1946
C62.69662.89283.37991.44393.60424.66081.09093.20003.69541.09301.0944
H73.54163.80262.02984.34811.09104.66085.69541.78811.78984.79004.1770
H83.54263.80634.34472.02954.65961.09095.69544.17974.78531.78981.7880
H93.17023.41112.09093.30041.09443.20001.78814.17971.79533.45352.5040
H102.79232.40432.09773.65681.09303.69541.78984.78531.79533.46223.4436
H112.79472.40813.65892.09773.69991.09304.79001.78983.45353.46221.7953
H123.16603.40703.29262.09113.19461.09444.17701.78802.50403.44361.7953

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 119.651 S1 O4 C6 119.641
O2 S1 O3 107.211 O2 S1 O4 107.220
O3 S1 O4 101.647 O3 C5 H7 105.561
O3 C5 H9 110.163 O3 C5 H10 110.806
O4 C6 H8 105.537 O4 C6 H11 110.802
O4 C6 H12 110.182 H7 C5 H9 109.812
H7 C5 H10 110.071 H8 C6 H11 110.081
H8 C6 H12 109.809 H9 C5 H10 110.327
H11 C6 H12 110.326
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 1.139     0.493
2 O -0.672     -0.365
3 O -0.473     -0.338
4 O -0.472     -0.343
5 C -0.250     0.152
6 C -0.250     0.162
7 H 0.163     0.050
8 H 0.163     0.048
9 H 0.143     0.034
10 H 0.184     0.038
11 H 0.184     0.033
12 H 0.143     0.037


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.001 2.375 0.520 2.432
CHELPG        
AIM        
ESP 0.000 2.416 0.510 2.469


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.981 -0.008 -0.001
y -0.008 -41.028 3.742
z -0.001 3.742 -47.894
Traceless
 xyz
x 5.480 -0.008 -0.001
y -0.008 2.410 3.742
z -0.001 3.742 -7.890
Polar
3z2-r2-15.779
x2-y22.046
xy-0.008
xz-0.001
yz3.742


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.554 0.003 0.005
y 0.003 8.158 -0.185
z 0.005 -0.185 7.359


<r2> (average value of r2) Å2
<r2> 188.076
(<r2>)1/2 13.714