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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-59.967505
Energy at 298.15K 
HF Energy-59.215848
Nuclear repulsion energy84.456321
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 3112 2955 115.10 105.87 0.29 0.45
2 A1 1859 1765 12.20 34.54 0.16 0.27
3 A1 1456 1382 1.02 4.20 0.34 0.51
4 A1 1133 1076 111.18 4.16 0.29 0.44
5 A1 525 499 0.11 10.79 0.32 0.49
6 A1 280 265 14.51 0.60 0.52 0.69
7 A2 1002 951 0.00 0.89 0.75 0.86
8 A2 169 160 0.00 0.60 0.75 0.86
9 B1 1005 954 0.93 0.68 0.75 0.86
10 B1 123 117 4.43 0.09 0.75 0.86
11 B2 3092 2935 0.26 1.21 0.75 0.86
12 B2 1788 1698 662.01 2.55 0.75 0.86
13 B2 1394 1324 17.48 11.18 0.75 0.86
14 B2 1080 1025 733.72 2.17 0.75 0.86
15 B2 689 654 38.65 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9353.5 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 8880.2 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
1.56555 0.08393 0.07966

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 0.405
C2 0.000 1.186 -0.328
C3 0.000 -1.186 -0.328
O4 0.000 2.271 0.222
O5 0.000 -2.271 0.222
H6 0.000 1.034 -1.426
H7 0.000 -1.034 -1.426

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.39411.39412.27822.27822.10302.1030
C21.39412.37191.21603.50011.10902.4767
C31.39412.37193.50011.21602.47671.1090
O42.27821.21603.50014.54162.06063.6927
O52.27823.50011.21604.54163.69272.0606
H62.10301.10902.47672.06063.69272.0677
H72.10302.47671.10903.69272.06062.0677

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 121.423 O1 C2 H6 113.829
O1 C3 O5 121.423 C2 O1 C3 116.572
O4 C2 H6 124.748
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability