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

using model chemistry: HF/CEP-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 HF/CEP-31G*
 hartrees
Energy at 0K-59.223568
Energy at 298.15K 
HF Energy-59.223568
Nuclear repulsion energy86.520835
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 HF/CEP-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 3310 2973 132.52 98.28 0.29 0.45
2 A1 2100 1886 54.95 41.31 0.15 0.26
3 A1 1590 1427 2.22 1.19 0.54 0.70
4 A1 1276 1146 160.76 3.43 0.27 0.43
5 A1 586 526 1.02 5.21 0.32 0.48
6 A1 303 272 21.29 0.79 0.61 0.76
7 A2 1139 1023 0.00 2.84 0.75 0.86
8 A2 166 149 0.00 0.88 0.75 0.86
9 B1 1150 1032 3.58 0.40 0.75 0.86
10 B1 128 115 5.58 0.12 0.75 0.86
11 B2 3284 2949 1.07 2.55 0.75 0.86
12 B2 2015 1810 1038.68 4.61 0.75 0.86
13 B2 1529 1373 27.17 8.90 0.75 0.86
14 B2 1267 1138 718.78 1.06 0.75 0.86
15 B2 762 684 56.66 0.03 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10301.6 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 9250.9 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 HF/CEP-31G*
ABC
1.65379 0.08776 0.08333

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.369
C2 0.000 1.169 -0.319
C3 0.000 -1.169 -0.319
O4 0.000 2.216 0.230
O5 0.000 -2.216 0.230
H6 0.000 1.048 -1.405
H7 0.000 -1.048 -1.405

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.35671.35672.22012.22012.06112.0611
C21.35672.33871.18183.42941.09332.4696
C31.35672.33873.42941.18182.46961.0933
O42.22011.18183.42944.43162.00973.6511
O52.22013.42941.18184.43163.65112.0097
H62.06111.09332.46962.00973.65112.0966
H72.06112.46961.09333.65112.00972.0966

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 121.837 O1 C2 H6 114.114
O1 C3 O5 121.837 C2 O1 C3 119.059
O4 C2 H6 124.049
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.111      
2 C 0.042      
3 C 0.042      
4 O -0.139      
5 O -0.139      
6 H 0.153      
7 H 0.153      


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 -4.149 4.149
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.137 0.000 0.000
y 0.000 -41.146 0.000
z 0.000 0.000 -25.572
Traceless
 xyz
x 7.222 0.000 0.000
y 0.000 -15.291 0.000
z 0.000 0.000 8.069
Polar
3z2-r216.138
x2-y215.008
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.350 0.000 0.000
y 0.000 6.047 0.000
z 0.000 0.000 3.445


<r2> (average value of r2) Å2
<r2> 97.604
(<r2>)1/2 9.879