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

using model chemistry: MP2/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/Def2TZVPP
 hartrees
Energy at 0K-627.586348
Energy at 298.15K 
HF Energy-626.568863
Nuclear repulsion energy275.965363
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/Def2TZVPP
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 3210 3055 0.11      
2 A1 3099 2948 1.21      
3 A1 1475 1403 2.77      
4 A1 1359 1293 26.49      
5 A1 1198 1140 148.37      
6 A1 1013 964 3.09      
7 A1 713 679 11.35      
8 A1 496 472 25.01      
9 A1 273 260 2.22      
10 A2 3218 3062 0.00      
11 A2 1458 1387 0.00      
12 A2 931 886 0.00      
13 A2 301 286 0.00      
14 A2 188 179 0.00      
15 B1 3222 3066 0.49      
16 B1 1477 1406 1.63      
17 B1 1395 1327 239.68      
18 B1 993 945 1.44      
19 B1 364 346 0.58      
20 B1 227 216 0.40      
21 B2 3209 3053 1.10      
22 B2 3097 2947 0.40      
23 B2 1464 1393 5.28      
24 B2 1344 1279 20.42      
25 B2 944 898 77.50      
26 B2 767 730 35.39      
27 B2 464 442 35.25      

Unscaled Zero Point Vibrational Energy (zpe) 18950.5 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 18031.4 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/Def2TZVPP
ABC
0.15385 0.14363 0.14034

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.190
O2 -1.252 0.000 0.905
O3 1.252 0.000 0.905
C4 0.000 1.386 -0.909
C5 0.000 -1.386 -0.909
H6 0.000 2.265 -0.269
H7 0.000 -2.265 -0.269
H8 0.899 1.366 -1.517
H9 -0.899 1.366 -1.517
H10 -0.899 -1.366 -1.517
H11 0.899 -1.366 -1.517

Atom - Atom Distances (Å)
  S1 O2 O3 C4 C5 H6 H7 H8 H9 H10 H11
S11.44201.44201.76871.76872.31092.31092.36392.36392.36392.3639
O21.44202.50422.60382.60382.84192.84193.51582.80312.80313.5158
O31.44202.50422.60382.60382.84192.84192.80313.51583.51582.8031
C41.76872.60382.60382.77181.08723.70651.08571.08572.95822.9582
C51.76872.60382.60382.77183.70651.08722.95822.95821.08571.0857
H62.31092.84192.84191.08723.70654.52981.78171.78173.94323.9432
H72.31092.84192.84193.70651.08724.52983.94323.94321.78171.7817
H82.36393.51582.80311.08572.95821.78173.94321.79843.27062.7317
H92.36392.80313.51581.08572.95821.78173.94321.79842.73173.2706
H102.36392.80313.51582.95821.08573.94321.78173.27062.73171.7984
H112.36393.51582.80312.95821.08573.94321.78172.73173.27061.7984

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 105.534 S1 C4 H8 109.483
S1 C4 H9 109.483 S1 C5 H7 105.534
S1 C5 H10 109.483 S1 C5 H11 109.483
O2 S1 O3 120.524 O2 S1 C4 107.950
O2 S1 C5 107.950 O3 S1 C4 107.950
O3 S1 C5 107.950 C4 S1 C5 103.180
H6 C4 H8 110.158 H6 C4 H9 110.158
H7 C5 H10 110.158 H7 C5 H11 110.158
H8 C4 H9 111.829 H10 C5 H11 111.829
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability