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

using model chemistry: QCISD(T)/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 QCISD(T)/6-311+G(3df,2p)
 hartrees
Energy at 0K-302.652493
Energy at 298.15K 
HF Energy-301.595324
Nuclear repulsion energy159.470719
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 QCISD(T)/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 3042 2902        
2 A1 1886 1799        
3 A1 1449 1382        
4 A1 1150 1097        
5 A1 537 512        
6 A1 278 265        
7 A2 1014 967        
8 A2 175 167        
9 B1 1022 975        
10 B1 128 122        
11 B2 3021 2881        
12 B2 1806 1722        
13 B2 1392 1328        
14 B2 1086 1035        
15 B2 706 674        

Unscaled Zero Point Vibrational Energy (zpe) 9346.1 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 8913.4 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 QCISD(T)/6-311+G(3df,2p)
ABC
1.61739 0.08654 0.08215

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.396
C2 0.000 1.173 -0.321
C3 0.000 -1.173 -0.321
O4 0.000 2.234 0.219
O5 0.000 -2.234 0.219
H6 0.000 1.022 -1.410
H7 0.000 -1.022 -1.410

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.37531.37532.24102.24102.07592.0759
C21.37532.34661.19013.44981.09992.4508
C31.37532.34663.44981.19012.45081.0999
O42.24101.19013.44984.46792.03053.6409
O52.24103.44981.19014.46793.64092.0305
H62.07591.09992.45082.03053.64092.0441
H72.07592.45081.09993.64092.03052.0441

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 121.582 O1 C2 H6 113.540
O1 C3 O5 121.582 C2 O1 C3 117.110
O4 C2 H6 124.878
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability