return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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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-302.276439
Energy at 298.15K 
HF Energy-301.475638
Nuclear repulsion energy158.383785
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
4/u)
Dep P Dep U
1 A1 3104 2925 87.22 109.62 0.27 0.42
2 A1 1895 1786 16.90 23.17 0.18 0.31
3 A1 1491 1405 0.55 4.05 0.30 0.46
4 A1 1155 1088 110.71 4.99 0.23 0.38
5 A1 538 506 0.75 9.81 0.35 0.52
6 A1 282 266 12.39 0.79 0.56 0.72
7 A2 1033 973 0.00 1.60 0.75 0.86
8 A2 170 160 0.00 0.50 0.75 0.86
9 B1 1036 976 0.64 3.90 0.75 0.86
10 B1 127 120 3.51 0.10 0.75 0.86
11 B2 3083 2905 0.00 1.39 0.75 0.86
12 B2 1822 1717 543.33 2.97 0.75 0.86
13 B2 1432 1349 11.12 11.14 0.75 0.86
14 B2 1103 1039 661.95 2.24 0.75 0.86
15 B2 703 663 35.20 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9486.6 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 8938.2 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
1.60063 0.08531 0.08099

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 0.392
C2 0.000 1.181 -0.325
C3 0.000 -1.181 -0.325
O4 0.000 2.250 0.224
O5 0.000 -2.250 0.224
H6 0.000 1.034 -1.415
H7 0.000 -1.034 -1.415

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.38171.38172.25642.25642.08252.0825
C21.38172.36241.20173.47501.10072.4691
C31.38172.36243.47501.20172.46911.1007
O42.25641.20173.47504.50042.04163.6707
O52.25643.47501.20174.50043.67072.0416
H62.08251.10072.46912.04163.67072.0678
H72.08252.46911.10073.67072.04162.0678

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 121.564 O1 C2 H6 113.565
O1 C3 O5 121.564 C2 O1 C3 117.491
O4 C2 H6 124.871
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability