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

using model chemistry: CCSD/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 CCSD/6-31G**
 hartrees
Energy at 0K-302.286182
Energy at 298.15K 
HF Energy-301.481293
Nuclear repulsion energy158.951450
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 CCSD/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 3124 2914 85.63      
2 A1 1947 1816 25.27      
3 A1 1506 1405 0.11      
4 A1 1177 1098 114.25      
5 A1 549 512 1.06      
6 A1 284 265 13.79      
7 A2 1044 974 0.00      
8 A2 161 150 0.00      
9 B1 1051 980 1.90      
10 B1 124 116 3.64      
11 B2 3102 2893 0.10      
12 B2 1872 1746 610.01      
13 B2 1453 1355 17.91      
14 B2 1142 1065 620.10      
15 B2 710 662 38.31      

Unscaled Zero Point Vibrational Energy (zpe) 9623.1 cm-1
Scaled (by 0.9326) Zero Point Vibrational Energy (zpe) 8974.5 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 CCSD/6-31G**
ABC
1.61217 0.08588 0.08153

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.389
C2 0.000 1.179 -0.324
C3 0.000 -1.179 -0.324
O4 0.000 2.242 0.225
O5 0.000 -2.242 0.225
H6 0.000 1.037 -1.411
H7 0.000 -1.037 -1.411

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.37731.37732.24792.24792.07732.0773
C21.37732.35761.19633.46441.09652.4685
C31.37732.35763.46441.19632.46851.0965
O42.24791.19633.46444.48382.03163.6646
O52.24793.46441.19634.48383.66462.0316
H62.07731.09652.46852.03163.66462.0746
H72.07732.46851.09653.66462.03162.0746

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 121.560 O1 C2 H6 113.731
O1 C3 O5 121.560 C2 O1 C3 117.709
O4 C2 H6 124.709
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability