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

using model chemistry: MP2/CEP-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/CEP-31G
 hartrees
Energy at 0K-59.539640
Energy at 298.15K 
HF Energy-59.034518
Nuclear repulsion energy81.875736
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/CEP-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 3081 2977 145.21 143.41 0.28 0.44
2 A1 1657 1601 4.21 18.96 0.11 0.20
3 A1 1419 1371 2.38 7.55 0.26 0.41
4 A1 1003 969 101.35 6.00 0.36 0.53
5 A1 475 459 0.16 17.60 0.35 0.52
6 A1 240 232 14.23 0.55 0.56 0.72
7 A2 946 914 0.00 0.61 0.75 0.86
8 A2 150 145 0.00 0.74 0.75 0.86
9 B1 948 916 2.38 0.60 0.75 0.86
10 B1 117 113 2.16 0.05 0.75 0.86
11 B2 3064 2961 0.10 2.45 0.75 0.86
12 B2 1581 1528 505.06 1.86 0.75 0.86
13 B2 1377 1330 15.00 16.66 0.75 0.86
14 B2 956 923 803.11 3.49 0.75 0.86
15 B2 636 614 45.72 0.04 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8824.6 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 8527.2 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/CEP-31G
ABC
1.48431 0.07829 0.07436

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.400
C2 0.000 1.240 -0.345
C3 0.000 -1.240 -0.345
O4 0.000 2.345 0.239
O5 0.000 -2.345 0.239
H6 0.000 1.098 -1.447
H7 0.000 -1.098 -1.447

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.44701.44702.35092.35092.14862.1486
C21.44702.48081.25003.63311.11092.5850
C31.44702.48083.63311.25002.58501.1109
O42.35091.25003.63314.69092.09733.8341
O52.35093.63311.25004.69093.83412.0973
H62.14861.11092.58502.09733.83412.1962
H72.14862.58501.11093.83412.09732.1962

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 121.140 O1 C2 H6 113.633
O1 C3 O5 121.140 C2 O1 C3 118.016
O4 C2 H6 125.228
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability