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

using model chemistry: PBEPBEultrafine/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBEultrafine/TZVP
 hartrees
Energy at 0K-302.872216
Energy at 298.15K 
HF Energy-302.872216
Nuclear repulsion energy158.096049
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 PBEPBEultrafine/TZVP
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 2917 2884 95.55 135.49 0.28 0.44
2 A1 1852 1830 22.41 37.58 0.18 0.31
3 A1 1390 1375 0.47 3.51 0.37 0.54
4 A1 1084 1072 99.97 3.82 0.20 0.33
5 A1 513 507 0.04 12.07 0.31 0.47
6 A1 264 261 13.03 0.77 0.33 0.50
7 A2 976 965 0.00 0.76 0.75 0.86
8 A2 177 175 0.00 0.54 0.75 0.86
9 B1 984 973 0.07 2.79 0.75 0.86
10 B1 129 128 4.32 0.14 0.75 0.86
11 B2 2897 2864 1.03 1.27 0.75 0.86
12 B2 1775 1755 634.35 2.67 0.75 0.86
13 B2 1340 1325 5.30 7.25 0.75 0.86
14 B2 982 971 637.36 2.70 0.75 0.86
15 B2 686 678 44.35 0.06 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8983.0 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 8880.6 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 PBEPBEultrafine/TZVP
ABC
1.58875 0.08496 0.08064

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.399
C2 0.000 1.189 -0.324
C3 0.000 -1.189 -0.324
O4 0.000 2.253 0.222
O5 0.000 -2.253 0.222
H6 0.000 1.032 -1.424
H7 0.000 -1.032 -1.424

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.39121.39122.25982.25982.09472.0947
C21.39122.37781.19563.48471.11132.4788
C31.39122.37783.48471.19562.47881.1113
O42.25981.19563.48474.50572.04893.6743
O52.25983.48471.19564.50573.67432.0489
H62.09471.11132.47882.04893.67432.0647
H72.09472.47881.11133.67432.04892.0647

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 121.566 O1 C2 H6 113.184
O1 C3 O5 121.566 C2 O1 C3 117.431
O4 C2 H6 125.250
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.053      
2 C 0.150      
3 C 0.150      
4 O -0.196      
5 O -0.196      
6 H 0.072      
7 H 0.072      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -3.258 3.258
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.668 0.000 0.000
y 0.000 -38.925 0.000
z 0.000 0.000 -26.421
Traceless
 xyz
x 6.005 0.000 0.000
y 0.000 -12.381 0.000
z 0.000 0.000 6.376
Polar
3z2-r212.751
x2-y212.257
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.783 0.000 0.000
y 0.000 8.125 0.000
z 0.000 0.000 4.480


<r2> (average value of r2) Å2
<r2> 126.827
(<r2>)1/2 11.262