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

using model chemistry: MP2/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-702.684239
Energy at 298.15K-702.692276
HF Energy-701.437781
Nuclear repulsion energy352.607463
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 A 3228 3072 5.87      
2 A 3214 3058 6.40      
3 A 3207 3051 6.46      
4 A 3171 3017 14.34      
5 A 3107 2957 26.13      
6 A 3077 2928 38.49      
7 A 1530 1456 12.47      
8 A 1528 1454 7.84      
9 A 1512 1438 10.80      
10 A 1511 1438 4.53      
11 A 1482 1410 0.35      
12 A 1474 1403 0.39      
13 A 1257 1196 147.33      
14 A 1205 1147 9.27      
15 A 1200 1142 1.86      
16 A 1189 1131 1.82      
17 A 1186 1129 0.92      
18 A 1055 1004 108.00      
19 A 1027 977 285.47      
20 A 769 732 96.37      
21 A 711 676 230.40      
22 A 584 556 14.06      
23 A 468 446 2.48      
24 A 402 383 7.39      
25 A 295 281 5.41      
26 A 230 219 7.13      
27 A 154 147 4.99      
28 A 132 126 2.13      
29 A 92 88 4.33      
30 A 69 65 2.31      

Unscaled Zero Point Vibrational Energy (zpe) 20033.5 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 19061.9 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
0.16948 0.07947 0.06791

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 -0.020 0.590 -0.484
O2 -0.077 1.336 0.767
O3 -0.879 -0.812 -0.230
O4 1.409 -0.156 -0.629
C5 -2.211 -0.557 0.241
C6 1.910 -0.784 0.571
H7 -2.664 -1.532 0.382
H8 2.952 -0.998 0.364
H9 -2.188 -0.015 1.183
H10 -2.786 0.007 -0.494
H11 1.824 -0.103 1.413
H12 1.361 -1.699 0.764

Atom - Atom Distances (Å)
  S1 O2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12
S11.45801.66481.61842.57792.59333.49983.47422.80162.82752.73512.9505
O21.45802.50032.52692.90032.91223.88113.84472.54013.27032.47033.3581
O31.66482.50032.41421.43552.90232.01923.88152.08422.09173.24212.6063
O41.61842.52692.41423.74501.44414.41672.01874.03034.20062.08502.0799
C52.57792.90031.43553.74504.14061.08445.18321.08691.09014.22633.7862
C62.59332.91222.90231.44414.14064.63871.08324.21414.87981.08651.0849
H73.49983.88112.01924.41671.08444.63875.64121.78011.77484.82144.0461
H83.47423.84473.88152.01875.18321.08325.64125.29635.88801.78101.7845
H92.80162.54012.08424.03031.08694.21411.78015.29631.78094.01933.9498
H102.82753.27032.09174.20061.09014.87981.77485.88801.78094.99024.6569
H112.73512.47033.24212.08504.22631.08654.82141.78104.01934.99021.7838
H122.95053.35812.60632.07993.78621.08494.04611.78453.94984.65691.7838

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 112.298 S1 O4 C6 115.614
O2 S1 O3 106.202 O2 S1 O4 110.340
O3 S1 O4 94.657 O3 C5 H7 105.668
O3 C5 H9 110.681 O3 C5 H10 111.099
O4 C6 H8 105.125 O4 C6 H11 110.154
O4 C6 H12 109.844 H7 C5 H9 110.134
H7 C5 H10 109.407 H8 C6 H11 110.336
H8 C6 H12 110.784 H9 C5 H10 109.776
H11 C6 H12 110.475
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability