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

using model chemistry: TPSSh/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at TPSSh/6-31G(2df,p)
 hartrees
Energy at 0K-303.102640
Energy at 298.15K 
HF Energy-303.102640
Nuclear repulsion energy159.257279
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 TPSSh/6-31G(2df,p)
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 3005 2900 93.37 109.61 0.29 0.44
2 A1 1912 1845 27.57 28.92 0.17 0.29
3 A1 1447 1396 0.13 3.54 0.31 0.47
4 A1 1139 1099 100.98 3.23 0.17 0.29
5 A1 534 515 0.44 9.25 0.30 0.46
6 A1 272 262 12.68 0.52 0.35 0.52
7 A2 1025 989 0.00 0.94 0.75 0.86
8 A2 191 184 0.00 0.15 0.75 0.86
9 B1 1031 995 0.20 3.08 0.75 0.86
10 B1 132 128 4.62 0.09 0.75 0.86
11 B2 2986 2882 0.29 1.65 0.75 0.86
12 B2 1830 1766 598.85 2.46 0.75 0.86
13 B2 1391 1342 6.76 7.46 0.75 0.86
14 B2 1064 1027 570.99 2.31 0.75 0.86
15 B2 700 676 36.87 0.04 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9329.1 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 9002.6 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 TPSSh/6-31G(2df,p)
ABC
1.61220 0.08628 0.08190

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.396
C2 0.000 1.177 -0.322
C3 0.000 -1.177 -0.322
O4 0.000 2.237 0.220
O5 0.000 -2.237 0.220
H6 0.000 1.015 -1.413
H7 0.000 -1.015 -1.413

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.37841.37842.24362.24362.07412.0741
C21.37842.35411.19023.45651.10322.4489
C31.37842.35413.45651.19022.44891.1032
O42.24361.19023.45654.47352.03943.6391
O52.24363.45651.19024.47353.63912.0394
H62.07411.10322.44892.03943.63912.0306
H72.07412.44891.10323.63912.03942.0306

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 121.558 O1 C2 H6 112.928
O1 C3 O5 121.558 C2 O1 C3 117.284
O4 C2 H6 125.513
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.187      
2 C 0.228      
3 C 0.228      
4 O -0.263      
5 O -0.263      
6 H 0.129      
7 H 0.129      


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 -2.998 2.998
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.654 0.000 0.000
y 0.000 7.173 0.000
z 0.000 0.000 4.152


<r2> (average value of r2) Å2
<r2> 124.467
(<r2>)1/2 11.156