return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: MP4/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 MP4/aug-cc-pVDZ
 hartrees
Energy at 0K-302.427209
Energy at 298.15K 
HF Energy-301.519343
Nuclear repulsion energy157.169973
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 MP4/6-31G*
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 3041 2971        
2 A1 1857 1815        
3 A1 1464 1431        
4 A1 1134 1108        
5 A1 526 514        
6 A1 277 271        
7 A2 1006 983        
8 A2 162 159        
9 B1 1011 988        
10 B1 123 120        
11 B2 3020 2950        
12 B2 1784 1743        
13 B2 1408 1375        
14 B2 1070 1045        
15 B2 690 674        

Unscaled Zero Point Vibrational Energy (zpe) 9286.9 cm-1
Scaled (by 0.9769) Zero Point Vibrational Energy (zpe) 9072.4 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 MP4/aug-cc-pVDZ
ABC
1.56830 0.08415 0.07986

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.411
C2 0.000 1.188 -0.326
C3 0.000 -1.188 -0.326
O4 0.000 2.267 0.217
O5 0.000 -2.267 0.217
H6 0.000 1.024 -1.425
H7 0.000 -1.024 -1.425

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.39761.39762.27502.27502.10222.1022
C21.39762.37531.20823.49691.11132.4696
C31.39762.37533.49691.20822.46961.1113
O42.27501.20823.49694.53352.05983.6778
O52.27503.49691.20824.53353.67782.0598
H62.10221.11132.46962.05983.67782.0478
H72.10222.46961.11133.67782.05982.0478

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 121.451 O1 C2 H6 113.342
O1 C3 O5 121.451 C2 O1 C3 116.367
O4 C2 H6 125.207
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability