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

using model chemistry: CCSD(T)=FULL/TZVP

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)=FULL/TZVP
 hartrees
Energy at 0K-302.573980
Energy at 298.15K 
HF Energy-301.584348
Nuclear repulsion energy159.158135
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)=FULL/TZVP
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 3057 2923        
2 A1 1887 1804        
3 A1 1480 1415        
4 A1 1151 1100        
5 A1 540 517        
6 A1 282 269        
7 A2 1013 969        
8 A2 160 153        
9 B1 1016 971        
10 B1 117 112        
11 B2 3035 2901        
12 B2 1810 1730        
13 B2 1432 1369        
14 B2 1084 1036        
15 B2 711 680        

Unscaled Zero Point Vibrational Energy (zpe) 9387.0 cm-1
Scaled (by 0.956) Zero Point Vibrational Energy (zpe) 8974.0 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)=FULL/TZVP
ABC
1.61114 0.08619 0.08181

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.399
C2 0.000 1.176 -0.322
C3 0.000 -1.176 -0.322
O4 0.000 2.238 0.218
O5 0.000 -2.238 0.218
H6 0.000 1.024 -1.410
H7 0.000 -1.024 -1.410

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.37931.37932.24562.24562.07892.0789
C21.37932.35201.19203.45691.09892.4545
C31.37932.35203.45691.19202.45451.0989
O42.24561.19203.45694.47682.03173.6464
O52.24563.45691.19204.47683.64642.0317
H62.07891.09892.45452.03173.64642.0481
H72.07892.45451.09893.64642.03172.0481

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 121.529 O1 C2 H6 113.557
O1 C3 O5 121.529 C2 O1 C3 116.988
O4 C2 H6 124.914
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability