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

using model chemistry: MP2/CEP-121G

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-121G
 hartrees
Energy at 0K-59.608380
Energy at 298.15K 
HF Energy-59.045652
Nuclear repulsion energy82.130302
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-121G
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 3028 2956 101.95 149.07 0.26 0.42
2 A1 1655 1615 6.70 19.01 0.10 0.18
3 A1 1419 1385 1.76 7.34 0.25 0.40
4 A1 997 973 91.47 6.64 0.33 0.49
5 A1 473 462 0.11 17.87 0.34 0.51
6 A1 239 233 12.25 0.66 0.54 0.70
7 A2 956 933 0.00 0.92 0.75 0.86
8 A2 154 150 0.00 0.72 0.75 0.86
9 B1 955 932 0.99 2.57 0.75 0.86
10 B1 117 115 1.72 0.09 0.75 0.86
11 B2 3011 2939 0.22 1.42 0.75 0.86
12 B2 1578 1540 522.51 2.19 0.75 0.86
13 B2 1379 1345 17.56 14.78 0.75 0.86
14 B2 936 914 813.47 3.60 0.75 0.86
15 B2 635 619 47.95 0.06 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8765.9 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 8555.5 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-121G
ABC
1.48829 0.07876 0.07480

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.399
C2 0.000 1.240 -0.346
C3 0.000 -1.240 -0.346
O4 0.000 2.337 0.240
O5 0.000 -2.337 0.240
H6 0.000 1.097 -1.441
H7 0.000 -1.097 -1.441

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.44581.44582.34242.34242.14242.1424
C21.44582.47931.24383.62431.10522.5812
C31.44582.47933.62431.24382.58121.1052
O42.34241.24383.62434.67412.08913.8239
O52.34243.62431.24384.67413.82392.0891
H62.14241.10522.58122.08913.82392.1947
H72.14242.58121.10523.82392.08912.1947

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 120.944 O1 C2 H6 113.576
O1 C3 O5 120.944 C2 O1 C3 118.053
O4 C2 H6 125.479
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability