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

using model chemistry: MP3=FULL/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP3=FULL/aug-cc-pVTZ
 hartrees
Energy at 0K-153.580805
Energy at 298.15K 
HF Energy-152.929540
Nuclear repulsion energy75.854390
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 MP3=FULL/aug-cc-pVTZ
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 3175 3175 12.41      
2 A1 1583 1583 2.41      
3 A1 1336 1336 15.52      
4 A1 1189 1189 0.21      
5 A1 935 935 70.44      
6 A2 3241 3241 0.00      
7 A2 1193 1193 0.00      
8 A2 1073 1073 0.00      
9 B1 3255 3255 28.66      
10 B1 1209 1209 5.65      
11 B1 831 831 0.30      
12 B2 3164 3164 26.12      
13 B2 1537 1537 0.24      
14 B2 1187 1187 0.20      
15 B2 902 902 7.74      

Unscaled Zero Point Vibrational Energy (zpe) 12905.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12905.1 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 MP3=FULL/aug-cc-pVTZ
ABC
0.87390 0.74788 0.48063

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.844
C2 0.000 0.730 -0.368
C3 0.000 -0.730 -0.368
H4 0.915 1.257 -0.585
H5 -0.915 1.257 -0.585
H6 -0.915 -1.257 -0.585
H7 0.915 -1.257 -0.585

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.41521.41522.11232.11232.11232.1123
C21.41521.46031.07831.07832.19852.1985
C31.41521.46032.19852.19851.07831.0783
H42.11231.07832.19851.83093.10982.5137
H52.11231.07832.19851.83092.51373.1098
H62.11232.19851.07833.10982.51371.8309
H72.11232.19851.07832.51373.10981.8309

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 58.940 O1 C2 H4 115.135
O1 C2 H5 115.135 O1 C3 C2 58.940
O1 C3 H6 115.135 O1 C3 H7 115.135
C2 O1 C3 62.119 C2 C3 H6 119.240
C2 C3 H7 119.240 C3 C2 H4 119.240
C3 C2 H5 119.240 H4 C2 H5 116.198
H6 C3 H7 116.198
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability