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: M06-2X/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 M06-2X/3-21G*
 hartrees
Energy at 0K-301.252934
Energy at 298.15K 
HF Energy-301.252934
Nuclear repulsion energy157.501062
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 M06-2X/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 3057 2895 73.53 88.58 0.28 0.43
2 A1 1920 1818 22.53 18.06 0.16 0.28
3 A1 1511 1431 0.04 2.77 0.49 0.65
4 A1 1114 1055 112.66 7.69 0.23 0.37
5 A1 548 519 1.79 9.25 0.39 0.56
6 A1 269 254 10.92 0.78 0.58 0.73
7 A2 1084 1026 0.00 2.83 0.75 0.86
8 A2 174 165 0.00 0.62 0.75 0.86
9 B1 1085 1028 0.78 3.17 0.75 0.86
10 B1 127 120 2.27 0.12 0.75 0.86
11 B2 3039 2878 1.78 2.98 0.75 0.86
12 B2 1828 1731 554.78 2.43 0.75 0.86
13 B2 1461 1384 4.10 14.99 0.75 0.86
14 B2 1129 1069 567.53 1.35 0.75 0.86
15 B2 711 673 41.31 0.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9526.4 cm-1
Scaled (by 0.9472) Zero Point Vibrational Energy (zpe) 9023.4 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 M06-2X/3-21G*
ABC
1.60962 0.08391 0.07975

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.391
C2 0.000 1.196 -0.324
C3 0.000 -1.196 -0.324
O4 0.000 2.267 0.224
O5 0.000 -2.267 0.224
H6 0.000 1.035 -1.409
H7 0.000 -1.035 -1.409

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.39331.39332.27342.27342.07662.0766
C21.39332.39131.20393.50611.09652.4808
C31.39332.39133.50611.20392.48081.0965
O42.27341.20393.50614.53452.04573.6845
O52.27343.50611.20394.53453.68452.0457
H62.07661.09652.48082.04573.68452.0709
H72.07662.48081.09653.68452.04572.0709

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 122.004 O1 C2 H6 112.491
O1 C3 O5 122.004 C2 O1 C3 118.220
O4 C2 H6 125.506
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.548      
2 C 0.498      
3 C 0.498      
4 O -0.416      
5 O -0.416      
6 H 0.193      
7 H 0.193      


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 -3.662 3.662
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.235 0.000 0.000
y 0.000 -38.703 0.000
z 0.000 0.000 -26.164
Traceless
 xyz
x 6.198 0.000 0.000
y 0.000 -12.503 0.000
z 0.000 0.000 6.305
Polar
3z2-r212.610
x2-y212.467
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.529 0.000 0.000
y 0.000 6.367 0.000
z 0.000 0.000 3.166


<r2> (average value of r2) Å2
<r2> 127.773
(<r2>)1/2 11.304