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

using model chemistry: QCISD/daug-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 QCISD/daug-cc-pVDZ
 hartrees
Energy at 0K-153.403718
Energy at 298.15K 
HF Energy-152.887811
Nuclear repulsion energy74.505737
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 QCISD/daug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3127 3127 15.56      
2 A1 1539 1539 2.67      
3 A1 1297 1297 10.66      
4 A1 1143 1143 0.03      
5 A1 888 888 70.41      
6 A2 3212 3212 0.00      
7 A2 1166 1166 0.00      
8 A2 1040 1040 0.00      
9 B1 3227 3227 38.25      
10 B1 1156 1156 4.42      
11 B1 807 807 0.12      
12 B2 3119 3119 33.31      
13 B2 1498 1498 0.01      
14 B2 1153 1153 0.11      
15 B2 830 830 8.96      

Unscaled Zero Point Vibrational Energy (zpe) 12600.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12600.4 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 QCISD/daug-cc-pVDZ
ABC
0.83616 0.72746 0.46351

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.864
C2 0.000 0.739 -0.379
C3 0.000 -0.739 -0.379
H4 0.929 1.277 -0.593
H5 -0.929 1.277 -0.593
H6 -0.929 -1.277 -0.593
H7 0.929 -1.277 -0.593

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.44611.44612.14892.14892.14892.1489
C21.44611.47841.09511.09512.23062.2306
C31.44611.47842.23062.23061.09511.0951
H42.14891.09512.23061.85893.15932.5545
H52.14891.09512.23061.85892.55453.1593
H62.14892.23061.09513.15932.55451.8589
H72.14892.23061.09512.55453.15931.8589

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 59.258 O1 C2 H4 114.778
O1 C2 H5 114.778 O1 C3 C2 59.258
O1 C3 H6 114.778 O1 C3 H7 114.778
C2 O1 C3 61.484 C2 C3 H6 119.429
C2 C3 H7 119.429 C3 C2 H4 119.429
C3 C2 H5 119.429 H4 C2 H5 116.155
H6 C3 H7 116.155
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability