return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: CCD/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCD/6-31G**
 hartrees
Energy at 0K-302.276357
Energy at 298.15K 
HF Energy-301.482098
Nuclear repulsion energy159.247364
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 CCD/6-31G**
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 3132 2937 84.56      
2 A1 1970 1847 24.08      
3 A1 1514 1420 0.17      
4 A1 1188 1114 117.38      
5 A1 554 520 1.20      
6 A1 287 269 13.82      
7 A2 1051 985 0.00      
8 A2 162 152 0.00      
9 B1 1057 991 1.95      
10 B1 125 117 3.56      
11 B2 3110 2916 0.11      
12 B2 1897 1779 612.88      
13 B2 1460 1369 20.24      
14 B2 1158 1086 622.87      
15 B2 715 671 38.96      

Unscaled Zero Point Vibrational Energy (zpe) 9690.0 cm-1
Scaled (by 0.9376) Zero Point Vibrational Energy (zpe) 9085.3 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 CCD/6-31G**
ABC
1.61674 0.08620 0.08184

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.387
C2 0.000 1.177 -0.323
C3 0.000 -1.177 -0.323
O4 0.000 2.237 0.225
O5 0.000 -2.237 0.225
H6 0.000 1.037 -1.410
H7 0.000 -1.037 -1.410

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.37461.37462.24322.24322.07542.0754
C21.37462.35401.19373.45811.09632.4670
C31.37462.35403.45811.19372.46701.0963
O42.24321.19373.45814.47482.02863.6606
O52.24323.45811.19374.47483.66062.0286
H62.07541.09632.46702.02863.66062.0749
H72.07542.46701.09633.66062.02862.0749

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 121.557 O1 C2 H6 113.789
O1 C3 O5 121.557 C2 O1 C3 117.794
O4 C2 H6 124.654
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability