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

using model chemistry: HF/6-31G(2df,p)

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/6-31G(2df,p)
 hartrees
Energy at 0K-701.305254
Energy at 298.15K-701.313630
Nuclear repulsion energy357.346037
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/6-31G(2df,p)
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 3316 3002 12.16      
2 A 3307 2994 21.39      
3 A 3302 2990 17.76      
4 A 3267 2958 27.94      
5 A 3215 2912 33.70      
6 A 3181 2881 46.63      
7 A 1631 1477 12.29      
8 A 1630 1476 5.26      
9 A 1617 1464 4.44      
10 A 1614 1462 5.16      
11 A 1604 1452 1.59      
12 A 1594 1444 0.22      
13 A 1356 1228 186.59      
14 A 1314 1189 19.44      
15 A 1307 1183 3.77      
16 A 1286 1164 3.69      
17 A 1282 1161 1.91      
18 A 1167 1056 157.02      
19 A 1131 1024 483.25      
20 A 856 775 68.03      
21 A 825 747 224.00      
22 A 655 593 17.23      
23 A 525 475 3.94      
24 A 450 408 14.75      
25 A 315 285 6.32      
26 A 250 227 8.09      
27 A 162 147 7.78      
28 A 135 122 1.76      
29 A 87 79 4.20      
30 A 70 63 2.31      

Unscaled Zero Point Vibrational Energy (zpe) 21224.0 cm-1
Scaled (by 0.9055) Zero Point Vibrational Energy (zpe) 19218.3 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/6-31G(2df,p)
ABC
0.17601 0.08011 0.06849

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G(2df,p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 -0.031 0.576 -0.466
O2 -0.036 1.325 0.746
O3 -0.873 -0.750 -0.173
O4 1.343 -0.154 -0.610
C5 -2.218 -0.571 0.226
C6 1.949 -0.785 0.515
H7 -2.646 -1.560 0.302
H8 2.964 -1.000 0.217
H9 -2.267 -0.069 1.182
H10 -2.769 0.000 -0.515
H11 1.940 -0.119 1.366
H12 1.426 -1.702 0.749

Atom - Atom Distances (Å)
  S1 O2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12
S11.42441.59781.56262.56452.59533.46263.45312.85142.79852.77892.9644
O21.42442.41872.43462.93692.90623.91533.83242.66623.28872.52463.3612
O31.59782.41872.33561.41462.90452.00643.86502.06042.06833.26722.6532
O41.56262.43462.33563.68131.42524.32652.00734.03124.11622.06412.0613
C52.56452.93691.41463.68134.18261.08035.20021.08161.08604.33483.8513
C62.59532.90622.90451.42524.18264.66461.07984.32824.89301.08011.0809
H73.46263.91532.00644.32651.08034.66465.63881.77271.76584.92284.0989
H83.45313.83243.86502.00735.20021.07985.63885.40065.86631.77311.7725
H92.85142.66622.06044.03121.08164.32821.77275.40061.77164.21114.0612
H102.79853.28872.06834.11621.08604.89301.76585.86631.77165.07224.7007
H112.77892.52463.26722.06414.33481.08014.92281.77314.21115.07221.7741
H122.96443.36122.65322.06133.85131.08094.09891.77254.06124.70071.7741

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 116.575 S1 O4 C6 120.533
O2 S1 O3 106.173 O2 S1 O4 109.098
O3 S1 O4 95.287 O3 C5 H7 106.295
O3 C5 H9 110.556 O3 C5 H10 110.926
O4 C6 H8 105.689 O4 C6 H11 110.186
O4 C6 H12 109.916 H7 C5 H9 110.173
H7 C5 H10 109.201 H8 C6 H11 110.353
H8 C6 H12 110.242 H9 C5 H10 109.635
H11 C6 H12 110.359
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.704      
2 O -0.477      
3 O -0.426      
4 O -0.385      
5 C -0.197      
6 C -0.202      
7 H 0.164      
8 H 0.165      
9 H 0.170      
10 H 0.145      
11 H 0.177      
12 H 0.161      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.696 -2.070 0.118 2.187
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.175 -0.628 1.611
y -0.628 -44.539 -3.533
z 1.611 -3.533 -43.595
Traceless
 xyz
x 10.892 -0.628 1.611
y -0.628 -6.154 -3.533
z 1.611 -3.533 -4.738
Polar
3z2-r2-9.475
x2-y211.364
xy-0.628
xz1.611
yz-3.533


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.186 -0.006 0.040
y -0.006 6.521 0.027
z 0.040 0.027 5.827


<r2> (average value of r2) Å2
<r2> 185.814
(<r2>)1/2 13.631