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All results from a given calculation for C2H4O (Ethylene oxide)

using model chemistry: CID/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CID/6-311+G(3df,2p)
 hartrees
Energy at 0K-153.447688
Energy at 298.15K 
HF Energy-152.925946
Nuclear repulsion energy76.162421
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 CID/6-311+G(3df,2p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3216 2972 13.21      
2 A1 1617 1494 3.36      
3 A1 1374 1269 17.03      
4 A1 1230 1136 0.81      
5 A1 959 886 77.33      
6 A2 3297 3046 0.00      
7 A2 1224 1131 0.00      
8 A2 1107 1023 0.00      
9 B1 3311 3060 31.87      
10 B1 1235 1141 6.22      
11 B1 850 786 0.34      
12 B2 3205 2962 29.57      
13 B2 1569 1450 0.17      
14 B2 1232 1139 0.06      
15 B2 939 868 9.47      

Unscaled Zero Point Vibrational Energy (zpe) 13182.5 cm-1
Scaled (by 0.924) Zero Point Vibrational Energy (zpe) 12180.6 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 CID/6-311+G(3df,2p)
ABC
0.88414 0.75186 0.48472

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.839
C2 0.000 0.727 -0.366
C3 0.000 -0.727 -0.366
H4 0.912 1.258 -0.580
H5 -0.912 1.258 -0.580
H6 -0.912 -1.258 -0.580
H7 0.912 -1.258 -0.580

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.40731.40732.10482.10482.10482.1048
C21.40731.45401.07721.07722.19532.1953
C31.40731.45402.19532.19531.07721.0772
H42.10481.07722.19531.82453.10832.5165
H52.10481.07722.19531.82452.51653.1083
H62.10482.19531.07723.10832.51651.8245
H72.10482.19531.07722.51653.10831.8245

picture of Ethylene oxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 58.897 O1 C2 H4 115.163
O1 C2 H5 115.163 O1 C3 C2 58.897
O1 C3 H6 115.163 O1 C3 H7 115.163
C2 O1 C3 62.206 C2 C3 H6 119.551
C2 C3 H7 119.551 C3 C2 H4 119.551
C3 C2 H5 119.551 H4 C2 H5 115.739
H6 C3 H7 115.739
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability