return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: B2PLYP/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 B2PLYP/6-31G*
 hartrees
Energy at 0K-302.802329
Energy at 298.15K 
HF Energy-302.539988
Nuclear repulsion energy158.741290
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 B2PLYP/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 3080 2924 94.01 109.04 0.28 0.44
2 A1 1912 1815 25.31 25.25 0.18 0.31
3 A1 1481 1406 0.05 3.25 0.32 0.48
4 A1 1148 1089 111.32 5.43 0.17 0.29
5 A1 537 509 0.65 10.12 0.35 0.52
6 A1 280 265 12.92 0.77 0.51 0.68
7 A2 1029 977 0.00 1.77 0.75 0.86
8 A2 171 163 0.00 0.43 0.75 0.86
9 B1 1036 983 1.05 3.65 0.75 0.86
10 B1 129 122 3.89 0.09 0.75 0.86
11 B2 3058 2903 0.01 2.05 0.75 0.86
12 B2 1835 1742 600.65 2.88 0.75 0.86
13 B2 1425 1353 9.57 10.28 0.75 0.86
14 B2 1094 1038 623.56 2.36 0.75 0.86
15 B2 705 669 38.81 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9459.6 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 8979.1 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 B2PLYP/6-31G*
ABC
1.61109 0.08558 0.08126

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.387
C2 0.000 1.182 -0.323
C3 0.000 -1.182 -0.323
O4 0.000 2.245 0.226
O5 0.000 -2.245 0.226
H6 0.000 1.037 -1.414
H7 0.000 -1.037 -1.414

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.37961.37962.25112.25112.07852.0785
C21.37962.36481.19633.47141.10042.4727
C31.37962.36483.47141.19632.47271.1004
O42.25111.19633.47144.49062.03703.6689
O52.25113.47141.19634.49063.66892.0370
H62.07851.10042.47272.03703.66892.0736
H72.07852.47271.10043.66892.03702.0736

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 121.670 O1 C2 H6 113.410
O1 C3 O5 121.670 C2 O1 C3 117.977
O4 C2 H6 124.920
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.393      
2 C 0.407      
3 C 0.407      
4 O -0.357      
5 O -0.357      
6 H 0.147      
7 H 0.147      


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 -3.272 3.272
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.127 0.000 0.000
y 0.000 -38.115 0.000
z 0.000 0.000 -25.864
Traceless
 xyz
x 5.863 0.000 0.000
y 0.000 -12.120 0.000
z 0.000 0.000 6.257
Polar
3z2-r212.513
x2-y211.988
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.156 0.000 0.000
y 0.000 6.950 0.000
z 0.000 0.000 3.776


<r2> (average value of r2) Å2
<r2> 125.616
(<r2>)1/2 11.208