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: MP2/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/6-31G**
 hartrees
Energy at 0K-302.274038
Energy at 298.15K 
HF Energy-301.479066
Nuclear repulsion energy158.328719
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 MP2/6-31G**
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 3122 2924 89.71 110.19 0.26 0.42
2 A1 1892 1772 16.02 22.82 0.18 0.31
3 A1 1489 1395 0.41 4.69 0.30 0.47
4 A1 1153 1080 110.24 5.03 0.23 0.38
5 A1 537 503 0.75 9.79 0.35 0.52
6 A1 280 263 12.42 0.79 0.56 0.72
7 A2 1033 967 0.00 1.52 0.75 0.86
8 A2 170 159 0.00 0.51 0.75 0.86
9 B1 1038 972 0.88 3.66 0.75 0.86
10 B1 127 119 3.62 0.10 0.75 0.86
11 B2 3102 2905 0.01 1.24 0.75 0.86
12 B2 1818 1703 544.73 3.03 0.75 0.86
13 B2 1436 1344 12.56 10.71 0.75 0.86
14 B2 1100 1030 654.38 2.25 0.75 0.86
15 B2 700 656 34.23 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9498.4 cm-1
Scaled (by 0.9365) Zero Point Vibrational Energy (zpe) 8895.3 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 MP2/6-31G**
ABC
1.60294 0.08522 0.08092

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.396
C2 0.000 1.181 -0.325
C3 0.000 -1.181 -0.325
O4 0.000 2.252 0.222
O5 0.000 -2.252 0.222
H6 0.000 1.028 -1.411
H7 0.000 -1.028 -1.411

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.38311.38312.25852.25852.07842.0784
C21.38312.36161.20253.47591.09712.4612
C31.38312.36163.47591.20252.46121.0971
O42.25851.20253.47594.50362.04093.6636
O52.25853.47591.20254.50363.66362.0409
H62.07841.09712.46122.04093.66362.0553
H72.07842.46121.09713.66362.04092.0553

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 121.579 O1 C2 H6 113.354
O1 C3 O5 121.579 C2 O1 C3 117.240
O4 C2 H6 125.068
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability