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

using model chemistry: B3PW91/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/STO-3G
 hartrees
Energy at 0K-298.886057
Energy at 298.15K 
HF Energy-298.886057
Nuclear repulsion energy153.676984
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 B3PW91/STO-3G
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 3189 2822 26.53 52.00 0.44 0.61
2 A1 1934 1712 1.41 10.45 0.13 0.23
3 A1 1468 1300 0.13 3.82 0.50 0.66
4 A1 1119 990 49.38 4.83 0.26 0.41
5 A1 536 474 1.30 9.80 0.36 0.53
6 A1 281 248 8.19 0.47 0.41 0.58
7 A2 939 831 0.00 0.53 0.75 0.86
8 A2 219 194 0.00 0.22 0.75 0.86
9 B1 935 828 1.26 1.06 0.75 0.86
10 B1 120 106 2.41 0.09 0.75 0.86
11 B2 3195 2827 12.80 2.36 0.75 0.86
12 B2 1843 1631 269.00 0.62 0.75 0.86
13 B2 1437 1271 22.78 12.14 0.75 0.86
14 B2 1132 1002 332.47 2.36 0.75 0.86
15 B2 647 573 9.18 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9496.4 cm-1
Scaled (by 0.885) Zero Point Vibrational Energy (zpe) 8404.4 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 B3PW91/STO-3G
ABC
1.47020 0.08109 0.07685

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.464
C2 0.000 1.197 -0.335
C3 0.000 -1.197 -0.335
O4 0.000 2.316 0.199
O5 0.000 -2.316 0.199
H6 0.000 0.979 -1.440
H7 0.000 -0.979 -1.440

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.43871.43872.33102.33102.14082.1408
C21.43872.39351.23993.55301.12652.4406
C31.43872.39353.55301.23992.44061.1265
O42.33101.23993.55304.63182.11503.6803
O52.33103.55301.23994.63183.68032.1150
H62.14081.12652.44062.11503.68031.9584
H72.14082.44061.12653.68032.11501.9584

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 120.791 O1 C2 H6 112.575
O1 C3 O5 120.791 C2 O1 C3 112.581
O4 C2 H6 126.634
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.147      
2 C 0.158      
3 C 0.158      
4 O -0.161      
5 O -0.161      
6 H 0.077      
7 H 0.077      


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 -2.258 2.258
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.762 0.000 0.000
y 0.000 -32.768 0.000
z 0.000 0.000 -23.897
Traceless
 xyz
x 4.571 0.000 0.000
y 0.000 -8.938 0.000
z 0.000 0.000 4.368
Polar
3z2-r28.735
x2-y29.006
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.766 0.000 0.000
y 0.000 5.536 0.000
z 0.000 0.000 1.999


<r2> (average value of r2) Å2
<r2> 129.511
(<r2>)1/2 11.380