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: PBEPBE/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBE/6-311+G(3df,2p)
 hartrees
Energy at 0K-302.874162
Energy at 298.15K 
HF Energy-302.874162
Nuclear repulsion energy158.444507
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 PBEPBE/6-311+G(3df,2p)
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 2915 2891 82.18 132.03 0.28 0.43
2 A1 1851 1836 24.58 49.74 0.17 0.29
3 A1 1381 1369 0.50 3.69 0.44 0.61
4 A1 1091 1082 90.68 2.22 0.09 0.16
5 A1 517 513 0.17 11.49 0.22 0.36
6 A1 268 265 12.64 0.73 0.21 0.35
7 A2 973 965 0.00 0.31 0.75 0.86
8 A2 180 179 0.00 0.37 0.75 0.86
9 B1 980 972 0.19 2.18 0.75 0.86
10 B1 130 128 4.89 0.09 0.75 0.86
11 B2 2896 2872 2.62 0.48 0.75 0.86
12 B2 1773 1759 646.80 2.21 0.75 0.86
13 B2 1328 1317 4.47 4.19 0.75 0.86
14 B2 993 985 637.47 3.06 0.75 0.86
15 B2 686 680 43.26 0.23 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8979.2 cm-1
Scaled (by 0.9918) Zero Point Vibrational Energy (zpe) 8905.5 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 PBEPBE/6-311+G(3df,2p)
ABC
1.59496 0.08537 0.08103

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.397
C2 0.000 1.185 -0.323
C3 0.000 -1.185 -0.323
O4 0.000 2.248 0.221
O5 0.000 -2.248 0.221
H6 0.000 1.027 -1.422
H7 0.000 -1.027 -1.422

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.38691.38692.25472.25472.08922.0892
C21.38692.37031.19413.47591.11052.4700
C31.38692.37033.47591.19412.47001.1105
O42.25471.19413.47594.49572.04763.6640
O52.25473.47591.19414.49573.66402.0476
H62.08921.11052.47002.04763.66402.0536
H72.08922.47001.11053.66402.04762.0536

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 121.572 O1 C2 H6 113.093
O1 C3 O5 121.572 C2 O1 C3 117.413
O4 C2 H6 125.335
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.489      
2 C 0.674      
3 C 0.674      
4 O -0.551      
5 O -0.551      
6 H 0.122      
7 H 0.122      


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 -3.161 3.161
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.729 0.000 0.000
y 0.000 -38.998 0.000
z 0.000 0.000 -26.404
Traceless
 xyz
x 5.972 0.000 0.000
y 0.000 -12.432 0.000
z 0.000 0.000 6.460
Polar
3z2-r212.920
x2-y212.269
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.498 0.000 0.000
y 0.000 8.574 0.000
z 0.000 0.000 5.149


<r2> (average value of r2) Å2
<r2> 126.335
(<r2>)1/2 11.240