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

using model chemistry: PM3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
Energy calculated at PM3
 hartrees
Energy at 0K 
Energy at 298.15K-0.191145
HF Energy-0.191145
Nuclear repulsion energy116.709513
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 PM3
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 2916 2840 0.00 142.46 0.33 0.49
2 A1 2000 1948 46.59 40.30 0.11 0.20
3 A1 1257 1225 64.44 13.95 0.68 0.81
4 A1 1124 1095 11.81 1.44 0.15 0.26
5 A1 558 544 3.06 10.45 0.43 0.60
6 A1 258 251 14.73 2.40 0.72 0.83
7 A2 938 914 0.00 14.11 0.75 0.86
8 A2 133 129 0.00 1.66 0.75 0.86
9 B1 935 911 0.11 0.92 0.75 0.86
10 B1 124 121 0.03 0.01 0.75 0.86
11 B2 2917 2841 0.49 26.19 0.75 0.86
12 B2 1952 1901 571.99 19.17 0.75 0.86
13 B2 1299 1265 690.80 0.33 0.75 0.86
14 B2 1077 1049 18.49 35.45 0.75 0.86
15 B2 567 552 64.36 0.26 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9027.6 cm-1
Scaled (by 0.974) Zero Point Vibrational Energy (zpe) 8792.9 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 PM3
ABC
1.22177 0.09394 0.08723

See section I.F.4 to change rotational constant units
Geometric Data calculated at PM3

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.285
C2 0.000 1.184 -0.410
C3 0.000 -1.184 -0.410
O4 0.000 2.113 0.353
O5 0.000 -2.113 0.353
H6 0.000 1.208 -1.510
H7 0.000 -1.208 -1.510

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.37321.37322.11422.11422.16332.1633
C21.37322.36891.20203.38471.10002.6331
C31.37322.36893.38471.20202.63311.1000
O42.11421.20203.38474.22612.07123.8079
O52.11423.38471.20204.22613.80792.0712
H62.16331.10002.63312.07123.80792.4160
H72.16332.63311.10003.80792.07122.4160

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 110.187 O1 C2 H6 121.623
O1 C3 O5 110.187 C2 O1 C3 119.205
O4 C2 H6 128.190
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability