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

using model chemistry: B1B95/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at B1B95/CEP-31G
 hartrees
Energy at 0K-72.627863
Energy at 298.15K-72.635347
Nuclear repulsion energy141.305358
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 B1B95/CEP-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3190 3055 17.92      
2 A 3185 3050 33.78      
3 A 3160 3026 53.70      
4 A 3152 3018 5.91      
5 A 3055 2925 52.88      
6 A 3049 2919 13.49      
7 A 1512 1448 6.37      
8 A 1503 1440 7.17      
9 A 1501 1438 24.15      
10 A 1487 1424 16.08      
11 A 1448 1386 28.41      
12 A 1441 1380 0.11      
13 A 1154 1105 0.64      
14 A 1152 1103 2.17      
15 A 1140 1091 1.34      
16 A 1137 1089 2.20      
17 A 993 951 84.72      
18 A 978 936 60.18      
19 A 911 873 71.07      
20 A 554 530 63.46      
21 A 537 514 134.73      
22 A 499 478 10.25      
23 A 399 382 0.01      
24 A 286 274 1.42      
25 A 243 232 19.74      
26 A 238 228 28.12      
27 A 208 199 4.34      
28 A 141 135 1.81      
29 A 100 96 4.17      
30 A 53 50 2.75      

Unscaled Zero Point Vibrational Energy (zpe) 19202.6 cm-1
Scaled (by 0.9575) Zero Point Vibrational Energy (zpe) 18386.5 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 B1B95/CEP-31G
ABC
0.12424 0.07316 0.06506

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/CEP-31G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 -0.000 -0.912 -0.363
O2 0.001 -1.040 1.255
O3 1.408 0.190 -0.750
O4 -1.410 0.189 -0.749
C5 1.891 1.035 0.345
C6 -1.890 1.036 0.346
H7 1.392 2.017 0.313
H8 -2.968 1.151 0.168
H9 1.725 0.556 1.326
H10 2.969 1.149 0.167
H11 -1.724 0.559 1.327
H12 -1.389 2.017 0.311

Atom - Atom Distances (Å)
  S1 O2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12
S11.62311.82971.82962.80512.80493.31213.65312.82573.65272.82623.3110
O21.62312.74122.74122.95092.95153.48833.84642.35143.84552.35263.4886
O31.82972.74122.81821.46493.57672.11304.57352.13112.04793.77573.5058
O41.82962.74122.81823.57871.46493.50942.04793.77714.57512.13102.1131
C52.80512.95091.46493.57873.78041.10154.86311.10341.09873.77543.4241
C62.80492.95153.57671.46493.78043.42491.09873.77594.86301.10341.1015
H73.31213.48832.11303.50941.10153.42494.44691.80811.80583.58602.7812
H83.65313.84644.57352.04794.86311.09874.44694.87005.93651.80021.8058
H92.82572.35142.13113.77711.10343.77591.80814.87001.80023.44893.5866
H103.65273.84552.04794.57511.09874.86301.80585.93651.80024.86964.4462
H112.82622.35263.77572.13103.77541.10343.58601.80023.44894.86961.8082
H123.31103.48863.50582.11313.42411.10152.78121.80583.58664.44621.8082

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 116.296 S1 O4 C6 116.289
O2 S1 O3 104.947 O2 S1 O4 104.955
O3 S1 O4 100.737 O3 C5 H7 110.038
O3 C5 H9 111.370 O3 C5 H10 105.145
O4 C6 H8 105.141 O4 C6 H11 111.368
O4 C6 H12 110.046 H7 C5 H9 110.183
H7 C5 H10 110.327 H8 C6 H11 109.670
H8 C6 H12 110.321 H9 C5 H10 109.673
H11 C6 H12 110.190
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.856      
2 O -0.524      
3 O -0.379      
4 O -0.379      
5 C -0.407      
6 C -0.407      
7 H 0.181      
8 H 0.215      
9 H 0.224      
10 H 0.215      
11 H 0.224      
12 H 0.181      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.003 2.001 0.980 2.228
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.242 -0.005 -0.003
y -0.005 -39.237 5.168
z -0.003 5.168 -48.719
Traceless
 xyz
x 5.736 -0.005 -0.003
y -0.005 4.244 5.168
z -0.003 5.168 -9.979
Polar
3z2-r2-19.959
x2-y20.995
xy-0.005
xz-0.003
yz5.168


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.763 0.000 0.000
y 0.000 7.222 -0.541
z 0.000 -0.541 6.626


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000