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

using model chemistry: MP2/LANL2DZ

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/LANL2DZ
 hartrees
Energy at 0K-314.078169
Energy at 298.15K-314.085344
HF Energy-313.434308
Nuclear repulsion energy222.003547
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/LANL2DZ
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 3195 3077 4.91      
2 A 3193 3075 23.30      
3 A 3146 3030 45.13      
4 A 3144 3028 11.13      
5 A 3033 2921 51.45      
6 A 3031 2919 10.67      
7 A 1540 1484 1.80      
8 A 1533 1477 20.44      
9 A 1522 1465 17.78      
10 A 1513 1457 5.98      
11 A 1474 1420 6.64      
12 A 1466 1412 0.91      
13 A 1161 1119 0.53      
14 A 1160 1117 0.09      
15 A 1137 1095 0.22      
16 A 1135 1093 0.60      
17 A 1039 1001 142.40      
18 A 921 887 120.98      
19 A 912 878 73.14      
20 A 550 530 87.22      
21 A 517 498 195.19      
22 A 486 468 45.53      
23 A 400 385 10.29      
24 A 266 256 11.30      
25 A 246 237 18.27      
26 A 236 227 19.44      
27 A 137 132 2.15      
28 A 91 88 3.47      
29 A 76 73 1.96      
30 A 44 42 2.00      

Unscaled Zero Point Vibrational Energy (zpe) 19151.7 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 18445.0 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/LANL2DZ
ABC
0.12150 0.07415 0.06481

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/LANL2DZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 -0.002 0.953 -0.723
O2 0.003 1.535 0.761
O3 -1.402 -0.212 -0.795
O4 1.394 -0.221 -0.799
C5 -1.875 -0.766 0.517
C6 1.881 -0.761 0.514
H7 -2.922 -1.036 0.324
H8 2.932 -1.010 0.320
H9 -1.281 -1.656 0.780
H10 -1.804 -0.005 1.313
H11 1.795 0.001 1.307
H12 1.305 -1.662 0.779

Atom - Atom Distances (Å)
  S1 O2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12
S11.59481.82321.82482.82942.83103.68453.68123.27112.88262.87413.2863
O21.59482.72972.73012.98072.97753.91823.90613.43972.43702.42233.4523
O31.82322.72972.79601.50143.57732.05874.54662.14022.15603.83313.4506
O41.82482.73012.79603.56631.50134.53282.06003.42133.83822.15612.1391
C52.82942.98071.50143.56633.75651.09754.81811.10181.10363.83233.3139
C62.83102.97753.57731.50133.75654.81431.09753.29663.84591.10381.1017
H73.68453.91822.05874.53281.09754.81435.85411.81261.81404.92854.2964
H83.68123.90614.54662.06004.81811.09755.85414.28704.94271.81381.8127
H93.27113.43972.14023.42131.10183.29661.81264.28701.81243.53322.5851
H102.88262.43702.15603.83821.10363.84591.81404.94271.81243.59923.5629
H112.87412.42233.83312.15613.83231.10384.92851.81383.53323.59921.8124
H123.28633.45233.45062.13913.31391.10174.29641.81272.58513.56291.8124

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 116.315 S1 O4 C6 116.335
O2 S1 O3 105.803 O2 S1 O4 105.752
O3 S1 O4 100.074 O3 C5 H7 103.684
O3 C5 H9 109.642 O3 C5 H10 110.787
O4 C6 H8 103.784 O4 C6 H11 110.789
O4 C6 H12 109.572 H7 C5 H9 111.007
H7 C5 H10 110.997 H8 C6 H11 110.963
H8 C6 H12 111.027 H9 C5 H10 110.534
H11 C6 H12 110.521
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability