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

using model chemistry: HF/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/STO-3G
 hartrees
Energy at 0K-297.451473
Energy at 298.15K 
HF Energy-297.451473
Nuclear repulsion energy157.339106
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 HF/STO-3G
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 3541 2892 6.55 46.46 0.43 0.60
2 A1 2161 1764 3.12 22.43 0.15 0.26
3 A1 1640 1339 7.52 2.87 0.51 0.68
4 A1 1247 1018 62.55 4.85 0.43 0.60
5 A1 602 492 3.49 5.40 0.36 0.53
6 A1 311 254 10.90 0.72 0.63 0.77
7 A2 1063 868 0.00 3.13 0.75 0.86
8 A2 173 141 0.00 0.74 0.75 0.86
9 B1 1053 860 1.11 0.75 0.75 0.86
10 B1 97 79 1.59 0.13 0.75 0.86
11 B2 3539 2890 30.22 2.60 0.75 0.86
12 B2 2079 1697 342.62 2.38 0.75 0.86
13 B2 1600 1306 62.33 13.71 0.75 0.86
14 B2 1362 1112 259.87 2.52 0.75 0.86
15 B2 717 585 14.47 0.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10592.4 cm-1
Scaled (by 0.8165) Zero Point Vibrational Energy (zpe) 8648.7 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 HF/STO-3G
ABC
1.54232 0.08480 0.08038

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.422
C2 0.000 1.179 -0.330
C3 0.000 -1.179 -0.330
O4 0.000 2.260 0.215
O5 0.000 -2.260 0.215
H6 0.000 1.022 -1.425
H7 0.000 -1.022 -1.425

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.39901.39902.26912.26912.11132.1113
C21.39902.35841.20993.48161.10612.4585
C31.39902.35843.48161.20992.45851.1061
O42.26911.20993.48164.51902.05423.6683
O52.26913.48161.20994.51903.66832.0542
H62.11131.10612.45852.05423.66832.0440
H72.11132.45851.10613.66832.05422.0440

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 120.689 O1 C2 H6 114.376
O1 C3 O5 120.689 C2 O1 C3 114.903
O4 C2 H6 124.935
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.246      
2 C 0.265      
3 C 0.265      
4 O -0.207      
5 O -0.207      
6 H 0.065      
7 H 0.065      


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 -2.793 2.793
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.541 0.000 0.000
y 0.000 -33.991 0.000
z 0.000 0.000 -24.172
Traceless
 xyz
x 5.541 0.000 0.000
y 0.000 -10.134 0.000
z 0.000 0.000 4.594
Polar
3z2-r29.187
x2-y210.450
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.717 0.000 0.000
y 0.000 4.555 0.000
z 0.000 0.000 1.900


<r2> (average value of r2) Å2
<r2> 125.007
(<r2>)1/2 11.181