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/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 B2PLYP/STO-3G
 hartrees
Energy at 0K-298.570040
Energy at 298.15K 
HF Energy-298.458155
Nuclear repulsion energy153.359988
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/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 3222 3222 31.24 54.25 0.44 0.61
2 A1 1888 1888 0.81 6.20 0.09 0.17
3 A1 1486 1486 0.12 5.58 0.46 0.63
4 A1 1121 1121 49.36 5.00 0.23 0.38
5 A1 537 537 1.48 10.71 0.35 0.52
6 A1 285 285 7.84 0.47 0.48 0.65
7 A2 937 937 0.00 0.48 0.75 0.86
8 A2 216 216 0.00 0.23 0.75 0.86
9 B1 930 930 0.49 1.07 0.75 0.86
10 B1 117 117 2.04 0.09 0.75 0.86
11 B2 3226 3226 13.21 2.08 0.75 0.86
12 B2 1796 1796 281.94 0.20 0.75 0.86
13 B2 1452 1452 28.09 12.86 0.75 0.86
14 B2 1141 1141 350.02 2.22 0.75 0.86
15 B2 647 647 8.79 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9499.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9499.1 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/STO-3G
ABC
1.46798 0.08074 0.07653

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.464
C2 0.000 1.197 -0.335
C3 0.000 -1.197 -0.335
O4 0.000 2.322 0.200
O5 0.000 -2.322 0.200
H6 0.000 0.984 -1.440
H7 0.000 -0.984 -1.440

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.43941.43942.33662.33662.14322.1432
C21.43942.39471.24513.55941.12522.4454
C31.43942.39473.55941.24512.44541.1252
O42.33661.24513.55944.64322.11603.6902
O52.33663.55941.24514.64323.69022.1160
H62.14321.12522.44542.11603.69021.9686
H72.14322.44541.12523.69022.11601.9686

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 120.836 O1 C2 H6 112.802
O1 C3 O5 120.836 C2 O1 C3 112.567
O4 C2 H6 126.362
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.164      
2 C 0.176      
3 C 0.176      
4 O -0.160      
5 O -0.160      
6 H 0.066      
7 H 0.066      


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 -2.252 2.252
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.731 0.000 0.000
y 0.000 -32.659 0.000
z 0.000 0.000 -24.102
Traceless
 xyz
x 4.650 0.000 0.000
y 0.000 -8.743 0.000
z 0.000 0.000 4.093
Polar
3z2-r28.186
x2-y28.928
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.759 0.000 0.000
y 0.000 5.532 0.000
z 0.000 0.000 2.001


<r2> (average value of r2) Å2
<r2> 129.991
(<r2>)1/2 11.401