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

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-698.172756
Energy at 298.15K-698.180706
HF Energy-697.531546
Nuclear repulsion energy334.660812
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 MP2/3-21G
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 3197 3051 4.81      
2 A 3195 3050 27.84      
3 A 3149 3005 26.20      
4 A 3148 3004 3.17      
5 A 3074 2934 32.82      
6 A 3071 2931 8.77      
7 A 1624 1550 1.22      
8 A 1614 1540 12.34      
9 A 1599 1526 13.88      
10 A 1590 1517 2.83      
11 A 1511 1443 9.46      
12 A 1500 1431 4.78      
13 A 1194 1140 3.74      
14 A 1192 1138 2.40      
15 A 1161 1109 0.22      
16 A 1161 1108 0.53      
17 A 1102 1052 79.78      
18 A 951 908 97.56      
19 A 938 895 77.40      
20 A 592 565 89.36      
21 A 575 549 171.34      
22 A 529 505 13.85      
23 A 435 415 1.34      
24 A 304 290 22.90      
25 A 302 289 16.76      
26 A 277 265 14.37      
27 A 207 198 1.70      
28 A 180 172 2.44      
29 A 117 112 3.47      
30 A 80 76 1.10      

Unscaled Zero Point Vibrational Energy (zpe) 19783.2 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 18883.1 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 MP2/3-21G
ABC
0.12452 0.07935 0.06956

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 -0.927 -0.302
O2 0.000 -0.965 1.271
O3 1.368 0.114 -0.766
O4 -1.368 0.114 -0.765
C5 1.774 1.078 0.301
C6 -1.774 1.078 0.301
H7 1.337 2.061 0.105
H8 -1.337 2.061 0.105
H9 1.446 0.707 1.279
H10 2.862 1.130 0.262
H11 -2.862 1.130 0.263
H12 -1.445 0.708 1.279

Atom - Atom Distances (Å)
  S1 O2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12
S11.57381.78041.78052.74472.74483.29923.29932.69483.56963.56962.6949
O21.57382.68032.68042.87472.87483.50833.50852.21073.68763.68772.2108
O31.78042.68032.73551.49433.45512.13313.44442.13042.07894.46983.5279
O41.78052.68042.73553.45541.49423.44452.13313.52834.47002.07872.1304
C52.74472.87471.49433.45543.54811.09383.26861.09611.09004.63673.3850
C62.74482.87483.45511.49423.54813.26851.09383.38544.63671.09001.0962
H73.29923.50832.13313.44451.09383.26852.67381.79581.79434.30403.3095
H83.29933.50853.44442.13313.26861.09382.67383.31014.30411.79421.7956
H92.69482.21072.13043.52831.09613.38541.79583.31011.79404.44642.8912
H103.56963.68762.07894.47001.09004.63671.79434.30411.79405.72434.4461
H113.56963.68774.46982.07874.63671.09004.30401.79424.44645.72431.7942
H122.69492.21083.52792.13043.38501.09623.30951.79562.89124.44611.7942

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 113.609 S1 O4 C6 113.608
O2 S1 O3 105.920 O2 S1 O4 105.920
O3 S1 O4 100.387 O3 C5 H7 110.053
O3 C5 H9 109.696 O3 C5 H10 106.048
O4 C6 H8 110.059 O4 C6 H11 106.043
O4 C6 H12 109.698 H7 C5 H9 110.171
H7 C5 H10 110.497 H8 C6 H11 110.495
H8 C6 H12 110.161 H9 C5 H10 110.296
H11 C6 H12 110.307
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 1.228     0.622
2 O -0.621     -0.368
3 O -0.555     -0.390
4 O -0.555     -0.395
5 C -0.357     0.141
6 C -0.357     0.156
7 H 0.189     0.032
8 H 0.189     0.033
9 H 0.206     0.036
10 H 0.214     0.053
11 H 0.214     0.049
12 H 0.206     0.031


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.001 1.473 0.762 1.659
CHELPG        
AIM        
ESP -0.010 1.468 0.746 1.647


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.123 0.000 -0.000
y 0.000 -39.933 3.970
z -0.000 3.970 -48.986
Traceless
 xyz
x 3.336 0.000 -0.000
y 0.000 5.121 3.970
z -0.000 3.970 -8.458
Polar
3z2-r2-16.915
x2-y2-1.190
xy0.000
xz-0.000
yz3.970


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.154 -0.000 0.000
y -0.000 6.542 -0.267
z 0.000 -0.267 5.698


<r2> (average value of r2) Å2
<r2> 194.326
(<r2>)1/2 13.940