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

using model chemistry: CISD/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CISD/6-31G
 hartrees
Energy at 0K-301.794005
Energy at 298.15K 
HF Energy-301.310866
Nuclear repulsion energy156.689800
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 CISD/6-31G
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 3170 2973 70.23      
2 A1 1878 1761 29.29      
3 A1 1520 1425 0.14      
4 A1 1121 1052 119.61      
5 A1 535 502 1.45      
6 A1 260 243 14.44      
7 A2 1056 990 0.00      
8 A2 149 140 0.00      
9 B1 1061 995 1.84      
10 B1 122 114 1.19      
11 B2 3153 2957 1.85      
12 B2 1795 1684 625.30      
13 B2 1480 1388 6.36      
14 B2 1127 1057 663.04      
15 B2 701 658 52.33      

Unscaled Zero Point Vibrational Energy (zpe) 9563.8 cm-1
Scaled (by 0.9378) Zero Point Vibrational Energy (zpe) 8969.0 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 CISD/6-31G
ABC
1.58203 0.08287 0.07874

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.357
C2 0.000 1.214 -0.333
C3 0.000 -1.214 -0.333
O4 0.000 2.275 0.249
O5 0.000 -2.275 0.249
H6 0.000 1.107 -1.421
H7 0.000 -1.107 -1.421

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.39641.39642.27792.27792.09492.0949
C21.39642.42721.21093.53721.09272.5631
C31.39642.42723.53721.21092.56311.0927
O42.27791.21093.53724.55062.03783.7724
O52.27793.53721.21094.55063.77242.0378
H62.09491.09272.56312.03783.77242.2148
H72.09492.56311.09273.77242.03782.2148

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 121.607 O1 C2 H6 114.067
O1 C3 O5 121.607 C2 O1 C3 120.707
O4 C2 H6 124.326
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability