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All results from a given calculation for CHOOCHO (diformyl ether)

using model chemistry: PBEPBE/6-31G*

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/6-31G*
 hartrees
Energy at 0K-302.756189
Energy at 298.15K 
HF Energy-302.756189
Nuclear repulsion energy157.713210
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/6-31G*
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 2938 2896 109.13 113.72 0.29 0.45
2 A1 1878 1851 23.80 27.67 0.19 0.32
3 A1 1413 1393 0.30 2.93 0.32 0.48
4 A1 1100 1085 101.25 5.05 0.19 0.32
5 A1 519 511 0.29 11.37 0.36 0.53
6 A1 269 266 11.58 0.72 0.37 0.54
7 A2 979 965 0.00 1.24 0.75 0.86
8 A2 179 176 0.00 0.24 0.75 0.86
9 B1 986 972 0.08 4.28 0.75 0.86
10 B1 130 128 3.97 0.09 0.75 0.86
11 B2 2920 2878 0.06 2.42 0.75 0.86
12 B2 1800 1775 563.12 2.65 0.75 0.86
13 B2 1358 1338 6.06 9.84 0.75 0.86
14 B2 1023 1008 552.80 3.02 0.75 0.86
15 B2 682 672 33.41 0.03 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9086.1 cm-1
Scaled (by 0.9857) Zero Point Vibrational Energy (zpe) 8956.2 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/6-31G*
ABC
1.58343 0.08459 0.08030

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.397
C2 0.000 1.189 -0.325
C3 0.000 -1.189 -0.325
O4 0.000 2.259 0.223
O5 0.000 -2.259 0.223
H6 0.000 1.030 -1.427
H7 0.000 -1.030 -1.427

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.39081.39082.26572.26572.09502.0950
C21.39082.37741.20233.49091.11392.4772
C31.39082.37743.49091.20232.47721.1139
O42.26571.20233.49094.51802.05793.6795
O52.26573.49091.20234.51803.67952.0579
H62.09501.11392.47722.05793.67952.0592
H72.09502.47721.11393.67952.05792.0592

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 121.618 O1 C2 H6 113.065
O1 C3 O5 121.618 C2 O1 C3 117.447
O4 C2 H6 125.317
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.323      
2 C 0.352      
3 C 0.352      
4 O -0.331      
5 O -0.331      
6 H 0.141      
7 H 0.141      


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 -2.940 2.940
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.116 0.000 0.000
y 0.000 -37.262 0.000
z 0.000 0.000 -25.778
Traceless
 xyz
x 5.404 0.000 0.000
y 0.000 -11.316 0.000
z 0.000 0.000 5.912
Polar
3z2-r211.823
x2-y211.147
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.220 0.000 0.000
y 0.000 7.391 0.000
z 0.000 0.000 3.941


<r2> (average value of r2) Å2
<r2> 126.685
(<r2>)1/2 11.255