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

using model chemistry: MP4/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP4/6-311+G(3df,2p)
 hartrees
Energy at 0K-302.662917
Energy at 298.15K 
HF Energy-301.593426
Nuclear repulsion energy158.913605
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 MP4/6-311+G(3df,2p)
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 3031 2860        
2 A1 1837 1734        
3 A1 1434 1353        
4 A1 1129 1066        
5 A1 529 499        
6 A1 279 263        
7 A2 1001 945        
8 A2 177 167        
9 B1 1009 952        
10 B1 128 120        
11 B2 3010 2841        
12 B2 1760 1661        
13 B2 1377 1300        
14 B2 1053 994        
15 B2 698 658        

Unscaled Zero Point Vibrational Energy (zpe) 9224.8 cm-1
Scaled (by 0.9438) Zero Point Vibrational Energy (zpe) 8706.4 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 MP4/6-311+G(3df,2p)
ABC
1.60965 0.08593 0.08157

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.401
C2 0.000 1.176 -0.322
C3 0.000 -1.176 -0.322
O4 0.000 2.243 0.217
O5 0.000 -2.243 0.217
H6 0.000 1.018 -1.411
H7 0.000 -1.018 -1.411

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.38011.38012.25022.25022.07832.0783
C21.38012.35201.19523.46091.10092.4497
C31.38012.35203.46091.19522.44971.1009
O42.25021.19523.46094.48542.03773.6449
O52.25023.46091.19524.48543.64492.0377
H62.07831.10092.44972.03773.64492.0362
H72.07832.44971.10093.64492.03772.0362

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 121.623 O1 C2 H6 113.315
O1 C3 O5 121.623 C2 O1 C3 116.877
O4 C2 H6 125.062
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability