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: B3LYP/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 B3LYP/3-21G
 hartrees
Energy at 0K-301.386141
Energy at 298.15K 
HF Energy-301.386141
Nuclear repulsion energy156.714395
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 B3LYP/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 3014 2908 104.30 99.81 0.30 0.46
2 A1 1866 1800 18.90 17.73 0.16 0.28
3 A1 1487 1435 0.24 2.83 0.47 0.64
4 A1 1064 1027 99.52 7.71 0.19 0.33
5 A1 528 509 0.81 11.20 0.38 0.55
6 A1 262 253 9.77 0.67 0.49 0.66
7 A2 1062 1025 0.00 2.09 0.75 0.86
8 A2 181 175 0.00 0.43 0.75 0.86
9 B1 1062 1025 0.03 3.21 0.75 0.86
10 B1 128 123 2.65 0.11 0.75 0.86
11 B2 2993 2888 1.99 3.64 0.75 0.86
12 B2 1771 1709 507.04 1.93 0.75 0.86
13 B2 1434 1384 2.60 15.12 0.75 0.86
14 B2 1038 1001 544.61 1.79 0.75 0.86
15 B2 695 670 39.58 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9291.9 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 8965.7 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 B3LYP/3-21G
ABC
1.59280 0.08308 0.07896

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.403
C2 0.000 1.202 -0.326
C3 0.000 -1.202 -0.326
O4 0.000 2.279 0.219
O5 0.000 -2.279 0.219
H6 0.000 1.027 -1.411
H7 0.000 -1.027 -1.411

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.40521.40522.28632.28632.08452.0845
C21.40522.40311.20723.52281.09902.4790
C31.40522.40313.52281.20722.47901.0990
O42.28631.20723.52284.55782.05493.6861
O52.28633.52281.20724.55783.68612.0549
H62.08451.09902.47902.05493.68612.0547
H72.08452.47901.09903.68612.05492.0547

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 121.947 O1 C2 H6 112.111
O1 C3 O5 121.947 C2 O1 C3 117.534
O4 C2 H6 125.942
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.494      
2 C 0.464      
3 C 0.464      
4 O -0.399      
5 O -0.399      
6 H 0.182      
7 H 0.182      


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 -3.338 3.338
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.072 0.000 0.000
y 0.000 -37.877 0.000
z 0.000 0.000 -26.077
Traceless
 xyz
x 5.906 0.000 0.000
y 0.000 -11.803 0.000
z 0.000 0.000 5.897
Polar
3z2-r211.794
x2-y211.806
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.562 0.000 0.000
y 0.000 6.708 0.000
z 0.000 0.000 3.261


<r2> (average value of r2) Å2
<r2> 128.592
(<r2>)1/2 11.340