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All results from a given calculation for C2H6O2S (Dimethyl sulfone)

using model chemistry: G3MP2

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at G3MP2
 hartrees
Energy at 0K-627.688371
Energy at 298.15K-627.681239
HF Energy-626.391730
Nuclear repulsion energy276.106055
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*
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 3341 3148 1.76      
2 A1 3244 3056 2.83      
3 A1 1602 1509 2.65      
4 A1 1533 1445 18.23      
5 A1 1254 1182 218.97      
6 A1 1125 1060 0.82      
7 A1 768 723 7.81      
8 A1 538 507 43.43      
9 A1 294 277 2.52      
10 A2 3343 3150 0.00      
11 A2 1591 1499 0.00      
12 A2 1059 997 0.00      
13 A2 322 303 0.00      
14 A2 206 194 0.00      
15 B1 3348 3155 5.83      
16 B1 1607 1514 11.89      
17 B1 1450 1366 300.64      
18 B1 1120 1055 0.15      
19 B1 394 371 1.74      
20 B1 235 222 0.53      
21 B2 3339 3146 0.19      
22 B2 3240 3053 0.45      
23 B2 1593 1501 5.84      
24 B2 1515 1427 12.34      
25 B2 1067 1005 81.51      
26 B2 848 799 41.63      
27 B2 500 471 63.35      

Unscaled Zero Point Vibrational Energy (zpe) 20237.4 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 19067.7 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=FULL/6-31G*
ABC
0.15004 0.13947 0.13801

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.059
O2 -1.353 0.000 0.968
O3 1.353 0.000 0.968
C4 0.000 1.285 -0.846
C5 0.000 -1.285 -0.846
H6 0.000 2.129 -0.240
H7 0.000 -2.129 -0.240
H8 0.853 1.292 -1.453
H9 -0.853 1.292 -1.453
H10 -0.853 -1.292 -1.453
H11 0.853 -1.292 -1.453

Atom - Atom Distances (Å)
  S1 O2 O3 C4 C5 H6 H7 H8 H9 H10 H11
S11.63021.63021.57211.57212.15032.15032.16392.16392.16392.1639
O21.63022.70642.60312.60312.79752.79753.52112.78922.78923.5211
O31.63022.70642.60312.60312.79752.79752.78923.52113.52112.7892
C41.57212.60312.60312.56991.03943.46761.04671.04672.78102.7810
C51.57212.60312.60312.56993.46761.03942.78102.78101.04671.0467
H62.15032.79752.79751.03943.46764.25861.70281.70283.72833.7283
H72.15032.79752.79753.46761.03944.25863.72833.72831.70281.7028
H82.16393.52112.78921.04672.78101.70283.72831.70663.09602.5832
H92.16392.78923.52111.04672.78101.70283.72831.70662.58323.0960
H102.16392.78923.52112.78101.04673.72831.70283.09602.58321.7066
H112.16393.52112.78922.78101.04673.72831.70282.58323.09601.7066

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 106.457 S1 C4 H8 109.789
S1 C4 H9 109.789 S1 C5 H7 106.457
S1 C5 H10 109.789 S1 C5 H11 109.789
O2 S1 O3 120.084 O2 S1 C4 107.842
O2 S1 C5 107.842 O3 S1 C4 107.842
O3 S1 C5 107.842 C4 S1 C5 104.304
H6 C4 H8 109.716 H6 C4 H9 109.716
H7 C5 H10 109.716 H7 C5 H11 109.716
H8 C4 H9 111.256 H10 C5 H11 111.256
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability