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

using model chemistry: MP2/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 MP2/CEP-31G
 hartrees
Energy at 0K-71.722281
Energy at 298.15K-71.729324
HF Energy-71.125359
Nuclear repulsion energy139.278611
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/CEP-31G
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 3194 3086 9.74      
2 A 3192 3084 41.18      
3 A 3151 3044 63.82      
4 A 3148 3042 12.59      
5 A 3034 2931 65.38      
6 A 3032 2929 14.93      
7 A 1526 1475 2.18      
8 A 1519 1468 19.48      
9 A 1507 1457 14.94      
10 A 1500 1449 5.29      
11 A 1467 1418 7.11      
12 A 1460 1411 2.18      
13 A 1154 1115 0.86      
14 A 1153 1114 0.05      
15 A 1127 1089 0.13      
16 A 1125 1087 0.47      
17 A 1016 982 174.41      
18 A 911 880 119.69      
19 A 907 877 54.89      
20 A 526 509 77.99      
21 A 484 467 192.83      
22 A 471 455 57.28      
23 A 385 372 17.62      
24 A 247 238 8.63      
25 A 234 226 17.21      
26 A 224 216 20.37      
27 A 135 131 1.10      
28 A 95 92 2.05      
29 A 88 85 3.95      
30 A 31 30 2.25      

Unscaled Zero Point Vibrational Energy (zpe) 19021.7 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 18380.6 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/CEP-31G
ABC
0.11814 0.07234 0.06289

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 -0.002 -0.941 -0.353
O2 0.003 -1.093 1.245
O3 1.423 0.194 -0.766
O4 -1.433 0.187 -0.758
C5 1.900 1.081 0.355
C6 -1.893 1.089 0.358
H7 2.965 1.252 0.119
H8 -2.955 1.275 0.122
H9 1.330 2.031 0.343
H10 1.794 0.573 1.337
H11 -1.792 0.585 1.342
H12 -1.308 2.030 0.339

Atom - Atom Distances (Å)
  S1 O2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12
S11.60541.86801.86652.86532.86383.72023.72283.33082.89372.89983.3187
O21.60542.77752.77743.01913.02333.94243.95233.51172.44722.45933.5063
O31.86802.77752.85601.50723.61362.06914.59652.14812.16833.86443.4717
O41.86652.77742.85603.62641.50744.60982.06823.50023.86662.16822.1488
C52.86533.01911.50723.62643.79291.10454.86511.10801.11023.85383.3461
C62.86383.02333.61361.50743.79294.86661.10453.35783.84891.11001.1080
H73.72023.94242.06914.60981.10454.86665.92081.82491.82154.95724.3495
H83.72283.95234.59652.06824.86511.10455.92084.35754.95211.82161.8247
H93.33083.51172.14813.50021.10803.35781.82494.35751.82423.58282.6387
H102.89372.44722.16833.86661.11023.84891.82154.95211.82423.58583.5698
H112.89982.45933.86442.16823.85381.11004.95721.82163.58283.58581.8244
H123.31873.50633.47172.14883.34611.10804.34951.82472.63873.56981.8244

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 115.774 S1 O4 C6 115.760
O2 S1 O3 105.946 O2 S1 O4 106.007
O3 S1 O4 99.774 O3 C5 H7 103.720
O3 C5 H9 109.499 O3 C5 H10 110.967
O4 C6 H8 103.644 O4 C6 H11 110.954
O4 C6 H12 109.546 H7 C5 H9 111.140
H7 C5 H10 110.669 H8 C6 H11 110.688
H8 C6 H12 111.127 H9 C5 H10 110.652
H11 C6 H12 110.681
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability