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

using model chemistry: CCSD=FULL/6-31G(2df,p)

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=FULL/6-31G(2df,p)
 hartrees
Energy at 0K-302.505883
Energy at 298.15K 
HF Energy-301.512288
Nuclear repulsion energy160.536394
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=FULL/6-31G(2df,p)
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 3090 2910 65.56      
2 A1 1967 1852 26.69      
3 A1 1503 1416 0.00      
4 A1 1192 1122 105.72      
5 A1 561 528 1.00      
6 A1 293 276 13.46      
7 A2 1078 1015 0.00      
8 A2 190 179 0.00      
9 B1 1076 1013 1.05      
10 B1 130 122 4.65      
11 B2 3066 2887 0.12      
12 B2 1888 1778 624.32      
13 B2 1442 1358 11.83      
14 B2 1159 1091 597.78      
15 B2 724 681 38.66      

Unscaled Zero Point Vibrational Energy (zpe) 9678.3 cm-1
Scaled (by 0.9416) Zero Point Vibrational Energy (zpe) 9113.0 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=FULL/6-31G(2df,p)
ABC
1.64941 0.08762 0.08320

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD=FULL/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.393
C2 0.000 1.164 -0.316
C3 0.000 -1.164 -0.316
O4 0.000 2.221 0.216
O5 0.000 -2.221 0.216
H6 0.000 1.013 -1.403
H7 0.000 -1.013 -1.403

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.36291.36292.22802.22802.06222.0622
C21.36292.32841.18313.42671.09802.4339
C31.36292.32843.42671.18312.43391.0980
O42.22801.18313.42674.44202.02033.6169
O52.22803.42671.18314.44203.61692.0203
H62.06221.09802.43392.02033.61692.0262
H72.06222.43391.09803.61692.02032.0262

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 121.955 O1 C2 H6 113.419
O1 C3 O5 121.955 C2 O1 C3 117.343
O4 C2 H6 124.626
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability