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

using model chemistry: PBEPBE/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-302.874526
Energy at 298.15K 
HF Energy-302.874526
Nuclear repulsion energy158.311954
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/cc-pVTZ
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 2914 2894 95.19 132.11 0.26 0.41
2 A1 1853 1840 24.65 31.26 0.21 0.35
3 A1 1383 1373 0.37 3.71 0.32 0.49
4 A1 1092 1084 95.26 2.81 0.19 0.32
5 A1 517 513 0.19 11.31 0.28 0.43
6 A1 267 265 11.92 0.73 0.29 0.44
7 A2 974 967 0.00 0.71 0.75 0.86
8 A2 184 183 0.00 0.21 0.75 0.86
9 B1 982 975 0.07 2.49 0.75 0.86
10 B1 129 129 4.69 0.11 0.75 0.86
11 B2 2895 2875 1.44 1.52 0.75 0.86
12 B2 1775 1763 592.67 2.94 0.75 0.86
13 B2 1328 1319 3.70 5.60 0.75 0.86
14 B2 995 988 598.53 3.00 0.75 0.86
15 B2 685 681 39.49 0.08 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8986.2 cm-1
Scaled (by 0.9931) Zero Point Vibrational Energy (zpe) 8924.2 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/cc-pVTZ
ABC
1.59412 0.08522 0.08089

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.400
C2 0.000 1.186 -0.323
C3 0.000 -1.186 -0.323
O4 0.000 2.250 0.220
O5 0.000 -2.250 0.220
H6 0.000 1.022 -1.421
H7 0.000 -1.022 -1.421

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.38881.38882.25752.25752.08902.0890
C21.38882.37101.19493.47831.11052.4659
C31.38882.37103.47831.19492.46591.1105
O42.25751.19493.47834.50042.04953.6609
O52.25753.47831.19494.50043.66092.0495
H62.08901.11052.46592.04953.66092.0446
H72.08902.46591.11053.66092.04952.0446

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 121.609 O1 C2 H6 112.936
O1 C3 O5 121.609 C2 O1 C3 117.220
O4 C2 H6 125.455
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.072      
2 C 0.196      
3 C 0.196      
4 O -0.188      
5 O -0.188      
6 H 0.028      
7 H 0.028      


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 -3.009 3.009
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.499 0.000 0.000
y 0.000 -38.132 0.000
z 0.000 0.000 -26.100
Traceless
 xyz
x 5.618 0.000 0.000
y 0.000 -11.833 0.000
z 0.000 0.000 6.215
Polar
3z2-r212.431
x2-y211.634
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.908 0.000 0.000
y 0.000 7.902 0.000
z 0.000 0.000 4.571


<r2> (average value of r2) Å2
<r2> 126.207
(<r2>)1/2 11.234