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

using model chemistry: MP2/6-31G(2df,p)

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(2df,p)
 hartrees
Energy at 0K-302.455791
Energy at 298.15K 
HF Energy-301.509477
Nuclear repulsion energy159.467420
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(2df,p)
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 3085 2914 67.99 99.79 0.27 0.42
2 A1 1900 1794 17.16 25.01 0.17 0.28
3 A1 1478 1396 0.64 4.70 0.32 0.49
4 A1 1161 1096 98.63 3.45 0.18 0.30
5 A1 543 513 0.65 9.00 0.29 0.45
6 A1 286 270 12.05 0.55 0.52 0.68
7 A2 1041 983 0.00 0.89 0.75 0.86
8 A2 182 172 0.00 0.25 0.75 0.86
9 B1 1047 989 0.33 2.91 0.75 0.86
10 B1 128 121 4.40 0.10 0.75 0.86
11 B2 3064 2894 0.19 0.66 0.75 0.86
12 B2 1823 1722 545.81 2.52 0.75 0.86
13 B2 1412 1334 9.08 8.25 0.75 0.86
14 B2 1104 1043 627.81 1.92 0.75 0.86
15 B2 709 670 34.34 0.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9481.1 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 8954.9 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(2df,p)
ABC
1.62323 0.08655 0.08217

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.400
C2 0.000 1.170 -0.320
C3 0.000 -1.170 -0.320
O4 0.000 2.236 0.216
O5 0.000 -2.236 0.216
H6 0.000 1.008 -1.407
H7 0.000 -1.008 -1.407

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.37371.37372.24312.24312.06962.0696
C21.37372.34021.19233.44741.09972.4348
C31.37372.34023.44741.19232.43481.0997
O42.24311.19233.44744.47112.03473.6271
O52.24313.44741.19234.47113.62712.0347
H62.06961.09972.43482.03473.62712.0165
H72.06962.43481.09973.62712.03472.0165

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 121.737 O1 C2 H6 113.130
O1 C3 O5 121.737 C2 O1 C3 116.815
O4 C2 H6 125.133
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability