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

using model chemistry: BLYP/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at BLYP/3-21G*
 hartrees
Energy at 0K-301.340267
Energy at 298.15K 
HF Energy-301.340267
Nuclear repulsion energy154.676403
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 BLYP/3-21G*
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 2908 2890 118.76 103.55 0.31 0.47
2 A1 1786 1774 13.76 16.89 0.16 0.27
3 A1 1434 1424 0.60 3.01 0.51 0.68
4 A1 995 989 81.16 8.31 0.18 0.31
5 A1 497 493 0.22 14.25 0.36 0.53
6 A1 254 253 8.12 0.63 0.41 0.58
7 A2 1011 1004 0.00 1.30 0.75 0.86
8 A2 182 181 0.00 0.23 0.75 0.86
9 B1 1011 1004 0.41 3.65 0.75 0.86
10 B1 124 123 2.89 0.13 0.75 0.86
11 B2 2887 2868 2.25 3.88 0.75 0.86
12 B2 1692 1681 444.83 1.57 0.75 0.86
13 B2 1377 1368 2.24 15.60 0.75 0.86
14 B2 923 917 500.28 2.47 0.75 0.86
15 B2 662 657 34.97 0.03 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8870.4 cm-1
Scaled (by 0.9935) Zero Point Vibrational Energy (zpe) 8812.7 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 BLYP/3-21G*
ABC
1.54187 0.08105 0.07700

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.428
C2 0.000 1.216 -0.330
C3 0.000 -1.216 -0.330
O4 0.000 2.308 0.211
O5 0.000 -2.308 0.211
H6 0.000 1.020 -1.421
H7 0.000 -1.020 -1.421

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.43281.43282.31832.31832.11172.1117
C21.43282.43131.21913.56511.10802.4875
C31.43282.43133.56511.21912.48751.1080
O42.31831.21913.56514.61622.07883.7065
O52.31833.56511.21914.61623.70652.0788
H62.11171.10802.48752.07883.70652.0400
H72.11172.48751.10803.70652.07882.0400

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 121.698 O1 C2 H6 111.787
O1 C3 O5 121.698 C2 O1 C3 116.085
O4 C2 H6 126.515
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.422      
2 C 0.408      
3 C 0.408      
4 O -0.365      
5 O -0.365      
6 H 0.168      
7 H 0.168      


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 -3.034 3.034
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.171 0.000 0.000
y 0.000 -37.068 0.000
z 0.000 0.000 -26.175
Traceless
 xyz
x 5.451 0.000 0.000
y 0.000 -10.895 0.000
z 0.000 0.000 5.444
Polar
3z2-r210.888
x2-y210.897
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.596 0.000 0.000
y 0.000 7.233 0.000
z 0.000 0.000 3.413


<r2> (average value of r2) Å2
<r2> 131.192
(<r2>)1/2 11.454