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

using model chemistry: CCD/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCD/aug-cc-pVDZ
 hartrees
Energy at 0K-153.396198
Energy at 298.15K 
HF Energy-152.887614
Nuclear repulsion energy74.659980
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 CCD/aug-cc-pVDZ
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 3140 3028 13.54      
2 A1 1548 1493 2.33      
3 A1 1307 1261 12.41      
4 A1 1163 1122 0.07      
5 A1 903 871 70.40      
6 A2 3225 3110 0.00      
7 A2 1170 1129 0.00      
8 A2 1044 1007 0.00      
9 B1 3240 3125 35.07      
10 B1 1166 1125 5.02      
11 B1 814 785 0.15      
12 B2 3130 3019 29.63      
13 B2 1503 1450 0.02      
14 B2 1164 1123 0.06      
15 B2 858 828 7.67      

Unscaled Zero Point Vibrational Energy (zpe) 12688.1 cm-1
Scaled (by 0.9645) Zero Point Vibrational Energy (zpe) 12237.6 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 CCD/aug-cc-pVDZ
ABC
0.84305 0.72764 0.46569

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.860
C2 0.000 0.739 -0.376
C3 0.000 -0.739 -0.376
H4 0.929 1.277 -0.591
H5 -0.929 1.277 -0.591
H6 -0.929 -1.277 -0.591
H7 0.929 -1.277 -0.591

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.44041.44042.14502.14502.14502.1450
C21.44041.47831.09511.09512.23042.2304
C31.44041.47832.23042.23041.09511.0951
H42.14501.09512.23041.85883.15882.5540
H52.14501.09512.23041.85882.55403.1588
H62.14502.23041.09513.15882.55401.8588
H72.14502.23041.09512.55403.15881.8588

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 59.127 O1 C2 H4 114.870
O1 C2 H5 114.870 O1 C3 C2 59.127
O1 C3 H6 114.870 O1 C3 H7 114.870
C2 O1 C3 61.746 C2 C3 H6 119.417
C2 C3 H7 119.417 C3 C2 H4 119.417
C3 C2 H5 119.417 H4 C2 H5 116.131
H6 C3 H7 116.131
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability