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

using model chemistry: QCISD(T)=FULL/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD(T)=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-302.432338
Energy at 298.15K 
HF Energy-301.521853
Nuclear repulsion energy157.818410
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 QCISD(T)=FULL/aug-cc-pVDZ
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 3048 2957        
2 A1 1850 1794        
3 A1 1423 1380        
4 A1 1124 1090        
5 A1 523 507        
6 A1 276 268        
7 A2 992 963        
8 A2 169 164        
9 B1 1002 972        
10 B1 124 120        
11 B2 3027 2937        
12 B2 1768 1716        
13 B2 1369 1328        
14 B2 1044 1012        
15 B2 688 667        

Unscaled Zero Point Vibrational Energy (zpe) 9212.4 cm-1
Scaled (by 0.9701) Zero Point Vibrational Energy (zpe) 8937.0 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 QCISD(T)=FULL/aug-cc-pVDZ
ABC
1.57843 0.08487 0.08054

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.407
C2 0.000 1.183 -0.325
C3 0.000 -1.183 -0.325
O4 0.000 2.257 0.218
O5 0.000 -2.257 0.218
H6 0.000 1.027 -1.423
H7 0.000 -1.027 -1.423

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.39141.39142.26462.26462.09892.0989
C21.39142.36651.20283.48251.10962.4679
C31.39142.36653.48251.20282.46791.1096
O42.26461.20283.48254.51342.05103.6707
O52.26463.48251.20284.51343.67072.0510
H62.09891.10962.46792.05103.67072.0533
H72.09892.46791.10963.67072.05102.0533

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 121.435 O1 C2 H6 113.636
O1 C3 O5 121.435 C2 O1 C3 116.505
O4 C2 H6 124.929
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability