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: MP2=FULL/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2=FULL/6-31G**
 hartrees
Energy at 0K-302.292367
Energy at 298.15K 
HF Energy-301.479550
Nuclear repulsion energy158.484720
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 MP2=FULL/6-31G**
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 3124 2919 89.68 109.64 0.26 0.42
2 A1 1897 1773 16.08 22.96 0.18 0.31
3 A1 1493 1395 0.43 4.68 0.31 0.47
4 A1 1155 1080 110.57 4.98 0.23 0.38
5 A1 538 503 0.77 9.72 0.35 0.52
6 A1 281 263 12.43 0.79 0.56 0.72
7 A2 1037 969 0.00 1.52 0.75 0.86
8 A2 173 162 0.00 0.51 0.75 0.86
9 B1 1042 974 0.89 3.64 0.75 0.86
10 B1 128 120 3.65 0.10 0.75 0.86
11 B2 3104 2900 0.01 1.20 0.75 0.86
12 B2 1823 1704 547.18 3.02 0.75 0.86
13 B2 1439 1344 12.27 10.65 0.75 0.86
14 B2 1104 1032 653.41 2.20 0.75 0.86
15 B2 702 656 33.99 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9520.2 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 8895.7 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 MP2=FULL/6-31G**
ABC
1.60805 0.08538 0.08107

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.395
C2 0.000 1.179 -0.324
C3 0.000 -1.179 -0.324
O4 0.000 2.250 0.221
O5 0.000 -2.250 0.221
H6 0.000 1.026 -1.409
H7 0.000 -1.026 -1.409

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.38131.38132.25672.25672.07602.0760
C21.38132.35881.20153.47251.09622.4583
C31.38132.35883.47251.20152.45831.0962
O42.25671.20153.47254.50002.03893.6596
O52.25673.47251.20154.50003.65962.0389
H62.07601.09622.45832.03893.65962.0524
H72.07602.45831.09623.65962.03892.0524

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 121.634 O1 C2 H6 113.338
O1 C3 O5 121.634 C2 O1 C3 117.257
O4 C2 H6 125.027
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability