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

using model chemistry: CCSD(T)/6-31G(2df,p)

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(T)/6-31G(2df,p)
 hartrees
Energy at 0K-302.506164
Energy at 298.15K 
HF Energy-301.509724
Nuclear repulsion energy159.493415
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(T)/6-31G(2df,p)
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 3061 3061        
2 A1 1914 1914        
3 A1 1478 1478        
4 A1 1164 1164        
5 A1 546 546        
6 A1 286 286        
7 A2 1034 1034        
8 A2 178 178        
9 B1 1041 1041        
10 B1 126 126        
11 B2 3039 3039        
12 B2 1835 1835        
13 B2 1412 1412        
14 B2 1111 1111        
15 B2 707 707        

Unscaled Zero Point Vibrational Energy (zpe) 9465.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9465.5 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(T)/6-31G(2df,p)
ABC
1.62036 0.08659 0.08220

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.400
C2 0.000 1.171 -0.320
C3 0.000 -1.171 -0.320
O4 0.000 2.234 0.216
O5 0.000 -2.234 0.216
H6 0.000 1.013 -1.409
H7 0.000 -1.013 -1.409

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.37431.37432.24202.24202.07372.0737
C21.37432.34161.19103.44711.10112.4407
C31.37432.34163.44711.19102.44071.1011
O42.24201.19103.44714.46882.03323.6316
O52.24203.44711.19104.46883.63162.0332
H62.07371.10112.44072.03323.63162.0262
H72.07372.44071.10113.63162.03322.0262

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 121.686 O1 C2 H6 113.344
O1 C3 O5 121.686 C2 O1 C3 116.845
O4 C2 H6 124.970
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability