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

using model chemistry: CCD/3-21G*

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/3-21G*
 hartrees
Energy at 0K-300.326842
Energy at 298.15K 
HF Energy-299.777473
Nuclear repulsion energy156.319610
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/3-21G*
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 3029 2897 94.53      
2 A1 1855 1775 12.52      
3 A1 1525 1459 0.01      
4 A1 1093 1046 103.40      
5 A1 541 518 1.66      
6 A1 268 257 9.24      
7 A2 1064 1017 0.00      
8 A2 160 153 0.00      
9 B1 1059 1013 0.91      
10 B1 113 108 1.56      
11 B2 3009 2878 4.97      
12 B2 1771 1694 432.61      
13 B2 1479 1415 10.92      
14 B2 1097 1050 554.58      
15 B2 710 679 37.02      

Unscaled Zero Point Vibrational Energy (zpe) 9386.6 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 8978.3 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/3-21G*
ABC
1.58412 0.08269 0.07859

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.401
C2 0.000 1.203 -0.327
C3 0.000 -1.203 -0.327
O4 0.000 2.284 0.222
O5 0.000 -2.284 0.222
H6 0.000 1.045 -1.416
H7 0.000 -1.045 -1.416

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.40591.40592.29142.29142.09542.0954
C21.40592.40591.21283.53031.09992.4977
C31.40592.40593.53031.21282.49771.0999
O42.29141.21283.53034.56872.05363.7103
O52.29143.53031.21284.56873.71032.0536
H62.09541.09992.49772.05363.71032.0901
H72.09542.49771.09993.71032.05362.0901

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 121.919 O1 C2 H6 112.916
O1 C3 O5 121.919 C2 O1 C3 117.660
O4 C2 H6 125.165
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability