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All results from a given calculation for CHOOCHO (diformyl ether)

using model chemistry: CCSD(T)/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCSD(T)/6-31G*
 hartrees
Energy at 0K-302.297571
Energy at 298.15K 
HF Energy-301.475314
Nuclear repulsion energy158.240445
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 CCSD(T)/6-31G*
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 3057 2941        
2 A1 1904 1832        
3 A1 1480 1424        
4 A1 1153 1110        
5 A1 537 516        
6 A1 281 271        
7 A2 1015 977        
8 A2 159 153        
9 B1 1021 982        
10 B1 122 118        
11 B2 3035 2920        
12 B2 1829 1760        
13 B2 1423 1369        
14 B2 1105 1063        
15 B2 699 672        

Unscaled Zero Point Vibrational Energy (zpe) 9409.5 cm-1
Scaled (by 0.9621) Zero Point Vibrational Energy (zpe) 9052.8 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 CCSD(T)/6-31G*
ABC
1.59109 0.08520 0.08087

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.392
C2 0.000 1.183 -0.326
C3 0.000 -1.183 -0.326
O4 0.000 2.251 0.226
O5 0.000 -2.251 0.226
H6 0.000 1.042 -1.421
H7 0.000 -1.042 -1.421

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.38411.38412.25702.25702.09102.0910
C21.38412.36671.20133.47811.10442.4798
C31.38412.36673.47811.20132.47981.1044
O42.25701.20133.47814.50162.04273.6810
O52.25703.47811.20134.50163.68102.0427
H62.09101.10442.47982.04273.68102.0830
H72.09102.47981.10443.68102.04272.0830

picture of diformyl ether state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 O4 121.450 O1 C2 H6 113.867
O1 C3 O5 121.450 C2 O1 C3 117.512
O4 C2 H6 124.683
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability