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 C2H6O2S (Dimethyl sulfone)

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 C2V 1A1
Energy calculated at HF/3-21G
 hartrees
Energy at 0K-623.032399
Energy at 298.15K 
HF Energy-623.032399
Nuclear repulsion energy260.086686
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 A1 3356 3039 1.28      
2 A1 3253 2946 1.92      
3 A1 1607 1456 6.30      
4 A1 1538 1393 7.22      
5 A1 1176 1065 42.85      
6 A1 849 769 21.15      
7 A1 643 582 1.05      
8 A1 409 371 36.24      
9 A1 268 243 3.99      
10 A2 3362 3044 0.00      
11 A2 1610 1458 0.00      
12 A2 1072 970 0.00      
13 A2 231 210 0.00      
14 A2 147 133 0.00      
15 B1 3365 3048 0.36      
16 B1 1626 1472 43.80      
17 B1 1188 1076 31.85      
18 B1 999 905 0.08      
19 B1 299 271 2.19      
20 B1 178 161 0.78      
21 B2 3355 3039 3.29      
22 B2 3250 2943 0.00      
23 B2 1595 1444 16.97      
24 B2 1513 1370 2.42      
25 B2 1072 971 23.06      
26 B2 755 684 28.33      
27 B2 340 308 56.31      

Unscaled Zero Point Vibrational Energy (zpe) 19527.9 cm-1
Scaled (by 0.9056) Zero Point Vibrational Energy (zpe) 17684.5 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
0.13218 0.12862 0.12822

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.177
O2 -1.373 0.000 0.983
O3 1.373 0.000 0.983
C4 0.000 1.428 -0.967
C5 0.000 -1.428 -0.967
H6 0.000 2.316 -0.354
H7 0.000 -2.316 -0.354
H8 0.895 1.384 -1.565
H9 -0.895 1.384 -1.565
H10 -0.895 -1.384 -1.565
H11 0.895 -1.384 -1.565

Atom - Atom Distances (Å)
  S1 O2 O3 C4 C5 H6 H7 H8 H9 H10 H11
S11.59221.59221.83001.83002.37652.37652.39862.39862.39862.3986
O21.59222.74662.77982.77983.00673.00673.68172.93932.93933.6817
O31.59222.74662.77982.77983.00673.00672.93933.68173.68172.9393
C41.83002.77982.77982.85671.07843.79431.07761.07763.01143.0114
C51.83002.77982.77982.85673.79431.07843.01143.01141.07761.0776
H62.37653.00673.00671.07843.79434.63251.77091.77093.99483.9948
H72.37653.00673.00673.79431.07844.63253.99483.99481.77091.7709
H82.39863.68172.93931.07763.01141.77093.99481.78973.29622.7680
H92.39862.93933.68171.07763.01141.77093.99481.78972.76803.2962
H102.39862.93933.68173.01141.07763.99481.77093.29622.76801.7897
H112.39863.68172.93933.01141.07763.99481.77092.76803.29621.7897

picture of Dimethyl sulfone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C4 H6 106.729 S1 C4 H8 108.376
S1 C4 H9 108.376 S1 C5 H7 106.729
S1 C5 H10 108.376 S1 C5 H11 108.376
O2 S1 O3 119.198 O2 S1 C4 108.442
O2 S1 C5 108.442 O3 S1 C4 108.442
O3 S1 C5 108.442 C4 S1 C5 102.618
H6 C4 H8 110.442 H6 C4 H9 110.442
H7 C5 H10 110.442 H7 C5 H11 110.442
H8 C4 H9 112.275 H10 C5 H11 112.275
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 1.676      
2 O -0.708      
3 O -0.708      
4 C -0.983      
5 C -0.983      
6 H 0.307      
7 H 0.307      
8 H 0.273      
9 H 0.273      
10 H 0.273      
11 H 0.273      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -6.143 6.143
CHELPG 0.000 0.000 -6.198 6.198
AIM        
ESP 0.005 0.000 -6.190 6.190


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -46.669 0.000 0.000
y 0.000 -31.725 0.000
z 0.000 0.000 -40.427
Traceless
 xyz
x -10.593 0.000 0.000
y 0.000 11.823 0.000
z 0.000 0.000 -1.230
Polar
3z2-r2-2.460
x2-y2-14.944
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.166 0.000 0.000
y 0.000 6.325 0.000
z 0.000 0.000 6.045


<r2> (average value of r2) Å2
<r2> 138.223
(<r2>)1/2 11.757