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

using model chemistry: CCSD(T)/6-311+G(3df,2p)

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)/6-311+G(3df,2p)
 hartrees
Energy at 0K-302.650505
Energy at 298.15K 
HF Energy-301.595597
Nuclear repulsion energy159.571305
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)/6-311+G(3df,2p)
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 3045 3005        
2 A1 1890 1866        
3 A1 1452 1433        
4 A1 1154 1139        
5 A1 542 535        
6 A1 282 279        
7 A2 1015 1002        
8 A2 174 172        
9 B1 1024 1010        
10 B1 128 126        
11 B2 3023 2984        
12 B2 1812 1788        
13 B2 1395 1376        
14 B2 1092 1078        
15 B2 708 699        

Unscaled Zero Point Vibrational Energy (zpe) 9368.5 cm-1
Scaled (by 0.9869) Zero Point Vibrational Energy (zpe) 9245.7 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)/6-311+G(3df,2p)
ABC
1.61938 0.08665 0.08225

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.396
C2 0.000 1.173 -0.321
C3 0.000 -1.173 -0.321
O4 0.000 2.233 0.219
O5 0.000 -2.233 0.219
H6 0.000 1.022 -1.410
H7 0.000 -1.022 -1.410

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.37411.37412.23952.23952.07502.0750
C21.37412.34531.18943.44771.09972.4504
C31.37412.34533.44771.18942.45041.0997
O42.23951.18943.44774.46512.02953.6398
O52.23953.44771.18944.46513.63982.0295
H62.07501.09972.45042.02953.63982.0446
H72.07502.45041.09973.63982.02952.0446

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 121.589 O1 C2 H6 113.561
O1 C3 O5 121.589 C2 O1 C3 117.160
O4 C2 H6 124.850
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability