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: PBE1PBE/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBE1PBE/6-31+G**
 hartrees
Energy at 0K-302.762318
Energy at 298.15K 
HF Energy-302.762318
Nuclear repulsion energy159.665841
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 PBE1PBE/6-31+G**
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 3058 2921 77.76 127.39 0.30 0.47
2 A1 1947 1860 29.50 46.35 0.19 0.31
3 A1 1451 1386 0.10 3.29 0.39 0.56
4 A1 1167 1115 114.03 3.31 0.15 0.26
5 A1 545 521 0.51 8.63 0.28 0.44
6 A1 277 265 15.48 0.89 0.40 0.57
7 A2 1028 982 0.00 1.23 0.75 0.86
8 A2 177 169 0.00 0.83 0.75 0.86
9 B1 1037 991 0.02 3.11 0.75 0.86
10 B1 134 128 4.49 0.13 0.75 0.86
11 B2 3039 2903 1.41 0.86 0.75 0.86
12 B2 1868 1784 756.37 2.99 0.75 0.86
13 B2 1398 1335 11.21 6.43 0.75 0.86
14 B2 1125 1075 684.59 2.26 0.75 0.86
15 B2 711 679 44.06 0.02 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9480.7 cm-1
Scaled (by 0.9553) Zero Point Vibrational Energy (zpe) 9056.9 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 PBE1PBE/6-31+G**
ABC
1.61985 0.08672 0.08231

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.382
C2 0.000 1.174 -0.322
C3 0.000 -1.174 -0.322
O4 0.000 2.230 0.228
O5 0.000 -2.230 0.228
H6 0.000 1.035 -1.416
H7 0.000 -1.035 -1.416

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.36881.36882.23582.23582.07422.0742
C21.36882.34851.19063.44881.10302.4652
C31.36882.34853.44881.19062.46521.1030
O42.23581.19063.44884.46092.03253.6556
O52.23583.44881.19064.46093.65562.0325
H62.07421.10302.46522.03253.65562.0697
H72.07422.46521.10303.65562.03252.0697

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 121.594 O1 C2 H6 113.661
O1 C3 O5 121.594 C2 O1 C3 118.156
O4 C2 H6 124.745
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.284      
2 C 0.383      
3 C 0.383      
4 O -0.386      
5 O -0.386      
6 H 0.145      
7 H 0.145      


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 -3.548 3.548
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.588 0.000 0.000
y 0.000 -39.632 0.000
z 0.000 0.000 -26.146
Traceless
 xyz
x 6.301 0.000 0.000
y 0.000 -13.265 0.000
z 0.000 0.000 6.965
Polar
3z2-r213.929
x2-y213.044
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.832 0.000 0.000
y 0.000 7.770 0.000
z 0.000 0.000 4.491


<r2> (average value of r2) Å2
<r2> 124.764
(<r2>)1/2 11.170