return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: LSDA/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at LSDA/6-31G(2df,p)
 hartrees
Energy at 0K-701.108298
Energy at 298.15K-701.116385
Nuclear repulsion energy355.623153
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 LSDA/6-31G(2df,p)
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 3078 3028 1.38      
2 A 3076 3027 10.12      
3 A 3040 2991 12.03      
4 A 3039 2990 7.30      
5 A 2957 2909 54.43      
6 A 2955 2908 9.98      
7 A 1437 1414 0.31      
8 A 1429 1406 13.29      
9 A 1421 1398 20.64      
10 A 1409 1386 0.41      
11 A 1383 1361 10.87      
12 A 1369 1347 3.18      
13 A 1205 1186 102.89      
14 A 1141 1122 0.62      
15 A 1136 1118 0.29      
16 A 1127 1109 0.04      
17 A 1125 1107 1.44      
18 A 1055 1038 138.07      
19 A 1031 1014 92.61      
20 A 699 688 76.02      
21 A 682 672 221.01      
22 A 606 596 8.97      
23 A 475 467 0.40      
24 A 357 351 6.51      
25 A 308 303 13.65      
26 A 305 300 14.08      
27 A 201 198 0.04      
28 A 139 136 0.12      
29 A 126 124 2.08      
30 A 29 28 0.26      

Unscaled Zero Point Vibrational Energy (zpe) 19167.3 cm-1
Scaled (by 0.984) Zero Point Vibrational Energy (zpe) 18860.7 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 LSDA/6-31G(2df,p)
ABC
0.13765 0.09199 0.07771

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/6-31G(2df,p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 -0.002 -0.871 -0.295
O2 0.003 -0.983 1.162
O3 1.256 0.092 -0.690
O4 -1.265 0.088 -0.683
C5 1.663 1.046 0.273
C6 -1.656 1.053 0.276
H7 1.178 2.021 0.084
H8 -2.747 1.172 0.196
H9 1.404 0.690 1.287
H10 2.755 1.157 0.185
H11 -1.390 0.704 1.290
H12 -1.164 2.022 0.073

Atom - Atom Distances (Å)
  S1 O2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12
S11.46191.63301.63252.60232.60083.14613.45682.63003.45562.63103.1399
O21.46192.48152.48172.76852.77213.40093.62502.18583.62032.19193.4032
O31.63302.48152.52101.41553.21462.07954.23952.07062.03563.36123.1882
O41.63252.48172.52103.22581.41553.20772.03543.37114.24882.07082.0795
C52.60232.76851.41553.22583.31871.10524.41251.10521.10073.23632.9976
C62.60082.77213.21461.41553.31872.99981.10073.24254.41241.10521.1052
H73.14613.40092.07953.20771.10522.99984.01671.80801.80133.12752.3415
H83.45683.62504.23952.03544.41251.10074.01674.31865.50171.80481.8011
H92.63002.18582.07063.37111.10523.24251.80804.31861.80502.79393.1371
H103.45563.62032.03564.24881.10074.41241.80135.50171.80504.31364.0148
H112.63102.19193.36122.07083.23631.10523.12751.80482.79394.31361.8083
H123.13993.40323.18822.07952.99761.10522.34151.80113.13714.01481.8083

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 117.043 S1 O4 C6 116.968
O2 S1 O3 106.477 O2 S1 O4 106.518
O3 S1 O4 101.069 O3 C5 H7 110.566
O3 C5 H9 109.850 O3 C5 H10 107.339
O4 C6 H8 107.323 O4 C6 H11 109.858
O4 C6 H12 110.567 H7 C5 H9 109.754
H7 C5 H10 109.480 H8 C6 H11 109.807
H8 C6 H12 109.471 H9 C5 H10 109.816
H11 C6 H12 109.780
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.291      
2 O -0.254      
3 O -0.130      
4 O -0.129      
5 C -0.402      
6 C -0.402      
7 H 0.155      
8 H 0.176      
9 H 0.182      
10 H 0.176      
11 H 0.182      
12 H 0.155      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.006 2.222 0.308 2.243
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.501 -0.019 -0.009
y -0.019 -40.244 2.440
z -0.009 2.440 -45.561
Traceless
 xyz
x 4.402 -0.019 -0.009
y -0.019 1.787 2.440
z -0.009 2.440 -6.189
Polar
3z2-r2-12.377
x2-y21.743
xy-0.019
xz-0.009
yz2.440


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.880 0.000 -0.001
y 0.000 7.803 0.042
z -0.001 0.042 6.416


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