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

using model chemistry: mPW1PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at mPW1PW91/3-21G
 hartrees
Energy at 0K-699.840209
Energy at 298.15K-699.848063
Nuclear repulsion energy336.662096
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 mPW1PW91/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3179 3034 6.62      
2 A 3177 3033 18.33      
3 A 3138 2996 19.47      
4 A 3138 2995 3.58      
5 A 3060 2921 37.31      
6 A 3057 2918 14.04      
7 A 1586 1514 0.29      
8 A 1573 1501 22.64      
9 A 1558 1487 20.65      
10 A 1547 1477 5.37      
11 A 1475 1408 22.67      
12 A 1463 1396 1.41      
13 A 1176 1123 4.37      
14 A 1175 1121 5.22      
15 A 1143 1091 0.45      
16 A 1142 1090 0.48      
17 A 1010 964 43.14      
18 A 974 930 84.82      
19 A 968 924 73.93      
20 A 618 590 139.21      
21 A 611 584 58.42      
22 A 540 515 7.53      
23 A 442 422 0.01      
24 A 296 282 23.46      
25 A 289 276 16.69      
26 A 271 259 15.95      
27 A 189 180 1.11      
28 A 149 142 3.03      
29 A 106 101 3.58      
30 A 80 76 1.21      

Unscaled Zero Point Vibrational Energy (zpe) 19563.9 cm-1
Scaled (by 0.9546) Zero Point Vibrational Energy (zpe) 18675.7 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 mPW1PW91/3-21G
ABC
0.12899 0.07875 0.07047

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 -0.913 -0.299
O2 -0.000 -0.905 1.288
O3 1.367 0.103 -0.759
O4 -1.366 0.103 -0.759
C5 1.788 1.048 0.286
C6 -1.789 1.048 0.286
H7 2.877 1.084 0.240
H8 -2.878 1.083 0.240
H9 1.368 2.038 0.089
H10 1.463 0.685 1.267
H11 -1.463 0.684 1.266
H12 -1.368 2.038 0.090

Atom - Atom Distances (Å)
  S1 O2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12
S11.58711.76401.76422.71772.71783.54353.54353.27552.67262.67253.2758
O21.58712.66002.66012.83172.83143.65133.65113.45952.16052.16013.4593
O31.76402.66002.73331.47083.45572.05994.46922.11302.10973.52853.4563
O41.76422.66012.73333.45531.47074.46882.05983.45543.52822.10972.1130
C52.71772.83171.47083.45533.57721.09034.66631.09331.09543.41603.3140
C62.71782.83143.45571.47073.57724.66631.09033.31393.41581.09541.0933
H73.54353.65132.05994.46881.09034.66635.75471.79211.79234.47814.3539
H83.54353.65114.46922.05984.66631.09035.75474.35384.47791.79231.7921
H93.27553.45952.11303.45541.09333.31391.79214.35381.79603.35162.7359
H102.67262.16052.10973.52821.09543.41581.79234.47791.79602.92633.3512
H112.67252.16013.52852.10973.41601.09544.47811.79233.35162.92631.7959
H123.27583.45933.45632.11303.31401.09334.35391.79212.73593.35121.7959

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 114.008 S1 O4 C6 114.005
O2 S1 O3 104.958 O2 S1 O4 104.954
O3 S1 O4 101.553 O3 C5 H7 106.135
O3 C5 H9 110.122 O3 C5 H10 109.733
O4 C6 H8 106.138 O4 C6 H11 109.735
O4 C6 H12 110.124 H7 C5 H9 110.316
H7 C5 H10 110.170 H8 C6 H11 110.170
H8 C6 H12 110.317 H9 C5 H10 110.285
H11 C6 H12 110.278
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 1.176      
2 O -0.619      
3 O -0.548      
4 O -0.548      
5 C -0.450      
6 C -0.450      
7 H 0.249      
8 H 0.249      
9 H 0.224      
10 H 0.247      
11 H 0.247      
12 H 0.224      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 1.724 0.700 1.860
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.415 0.002 0.000
y 0.002 -39.146 3.659
z 0.000 3.659 -48.073
Traceless
 xyz
x 4.194 0.002 0.000
y 0.002 4.598 3.659
z 0.000 3.659 -8.793
Polar
3z2-r2-17.585
x2-y2-0.269
xy0.002
xz0.000
yz3.659


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


<r2> (average value of r2) Å2
<r2> 192.295
(<r2>)1/2 13.867