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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-302.314072
Energy at 298.15K 
HF Energy-301.479357
Nuclear repulsion energy158.354376
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 3094 2935        
2 A1 1906 1808        
3 A1 1486 1410        
4 A1 1154 1095        
5 A1 538 510        
6 A1 280 266        
7 A2 1021 969        
8 A2 162 153        
9 B1 1028 975        
10 B1 123 117        
11 B2 3073 2915        
12 B2 1831 1737        
13 B2 1434 1360        
14 B2 1106 1049        
15 B2 698 662        

Unscaled Zero Point Vibrational Energy (zpe) 9467.6 cm-1
Scaled (by 0.9485) Zero Point Vibrational Energy (zpe) 8980.0 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
1.59999 0.08527 0.08096

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 0.395
C2 0.000 1.182 -0.325
C3 0.000 -1.182 -0.325
O4 0.000 2.251 0.223
O5 0.000 -2.251 0.223
H6 0.000 1.033 -1.413
H7 0.000 -1.033 -1.413

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.38371.38372.25722.25722.08282.0828
C21.38372.36321.20113.47561.09852.4677
C31.38372.36323.47561.20112.46771.0985
O42.25721.20113.47564.50132.03933.6687
O52.25723.47561.20114.50133.66872.0393
H62.08281.09852.46772.03933.66872.0663
H72.08282.46771.09853.66872.03932.0663

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 121.526 O1 C2 H6 113.590
O1 C3 O5 121.526 C2 O1 C3 117.288
O4 C2 H6 124.884
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability