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

using model chemistry: CID/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CID/3-21G
 hartrees
Energy at 0K-300.256174
Energy at 298.15K 
HF Energy-299.780869
Nuclear repulsion energy157.552157
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 CID/3-21G
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 3129 2915 89.90      
2 A1 1932 1800 23.04      
3 A1 1564 1457 0.08      
4 A1 1136 1059 122.30      
5 A1 555 517 2.03      
6 A1 270 251 10.96      
7 A2 1113 1037 0.00      
8 A2 166 155 0.00      
9 B1 1112 1035 2.83      
10 B1 120 112 1.72      
11 B2 3108 2895 3.43      
12 B2 1841 1715 543.27      
13 B2 1519 1415 7.82      
14 B2 1149 1070 589.46      
15 B2 729 679 44.25      

Unscaled Zero Point Vibrational Energy (zpe) 9720.8 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 9055.9 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 CID/3-21G
ABC
1.61963 0.08377 0.07965

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.383
C2 0.000 1.199 -0.324
C3 0.000 -1.199 -0.324
O4 0.000 2.268 0.228
O5 0.000 -2.268 0.228
H6 0.000 1.052 -1.406
H7 0.000 -1.052 -1.406

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.39241.39242.27292.27292.07572.0757
C21.39242.39891.20233.51071.09202.4982
C31.39242.39893.51071.20232.49821.0920
O42.27291.20233.51074.53512.03643.7002
O52.27293.51071.20234.53513.70022.0364
H62.07571.09202.49822.03643.70022.1045
H72.07572.49821.09203.70022.03642.1045

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 122.149 O1 C2 H6 112.776
O1 C3 O5 122.149 C2 O1 C3 118.957
O4 C2 H6 125.075
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability