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

using model chemistry: QCISD(T)=FULL/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/cc-pVDZ
 hartrees
Energy at 0K-302.361573
Energy at 298.15K 
HF Energy-301.501572
Nuclear repulsion energy158.464844
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/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 3040 2915        
2 A1 1903 1825        
3 A1 1444 1385        
4 A1 1156 1108        
5 A1 537 515        
6 A1 282 271        
7 A2 1018 977        
8 A2 181 174        
9 B1 1023 981        
10 B1 124 119        
11 B2 3015 2892        
12 B2 1826 1752        
13 B2 1397 1340        
14 B2 1088 1044        
15 B2 703 674        

Unscaled Zero Point Vibrational Energy (zpe) 9369.0 cm-1
Scaled (by 0.959) Zero Point Vibrational Energy (zpe) 8984.9 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/cc-pVDZ
ABC
1.59794 0.08555 0.08120

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.409
C2 0.000 1.176 -0.320
C3 0.000 -1.176 -0.320
O4 0.000 2.249 0.213
O5 0.000 -2.249 0.213
H6 0.000 1.007 -1.421
H7 0.000 -1.007 -1.421

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.38381.38382.25762.25762.08902.0890
C21.38382.35241.19803.46651.11412.4453
C31.38382.35243.46651.19802.44531.1141
O42.25761.19803.46654.49812.05253.6433
O52.25763.46651.19804.49813.64332.0525
H62.08901.11412.44532.05253.64332.0144
H72.08902.44531.11413.64332.05252.0144

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 121.789 O1 C2 H6 113.066
O1 C3 O5 121.789 C2 O1 C3 116.415
O4 C2 H6 125.145
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability