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: CCSD/6-311G**

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/6-311G**
 hartrees
Energy at 0K-302.420642
Energy at 298.15K 
HF Energy-301.559177
Nuclear repulsion energy159.765277
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/6-311G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3071 3071 89.28      
2 A1 1943 1943 25.45      
3 A1 1487 1487 0.28      
4 A1 1179 1179 118.89      
5 A1 552 552 0.74      
6 A1 288 288 13.98      
7 A2 1048 1048 0.00      
8 A2 169 169 0.00      
9 B1 1053 1053 1.40      
10 B1 122 122 4.13      
11 B2 3046 3046 0.12      
12 B2 1868 1868 655.86      
13 B2 1435 1435 17.98      
14 B2 1131 1131 633.03      
15 B2 718 718 43.71      

Unscaled Zero Point Vibrational Energy (zpe) 9554.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9554.8 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/6-311G**
ABC
1.63031 0.08678 0.08239

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.397
C2 0.000 1.172 -0.318
C3 0.000 -1.172 -0.318
O4 0.000 2.231 0.216
O5 0.000 -2.231 0.216
H6 0.000 1.018 -1.409
H7 0.000 -1.018 -1.409

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.37251.37252.23832.23832.07282.0728
C21.37252.34341.18663.44451.10172.4462
C31.37252.34343.44451.18662.44621.1017
O42.23831.18663.44454.46212.02823.6327
O52.23833.44451.18664.46213.63272.0282
H62.07281.10172.44622.02823.63272.0356
H72.07282.44621.10173.63272.02822.0356

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 121.840 O1 C2 H6 113.358
O1 C3 O5 121.840 C2 O1 C3 117.224
O4 C2 H6 124.802
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability