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All results from a given calculation for CH3CHO (Acetaldehyde)

using model chemistry: M06-2X/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at M06-2X/STO-3G
 hartrees
Energy at 0K-151.811147
Energy at 298.15K-151.814949
HF Energy-151.811147
Nuclear repulsion energy68.252294
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 M06-2X/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 A' 3568 3568 0.69 23.80 0.75 0.86
2 A' 3379 3379 1.75 41.54 0.01 0.02
3 A' 3289 3289 27.87 46.61 0.35 0.52
4 A' 1947 1947 31.42 2.66 0.08 0.15
5 A' 1675 1675 7.10 18.23 0.74 0.85
6 A' 1555 1555 9.22 6.28 0.74 0.85
7 A' 1506 1506 10.63 9.48 0.74 0.85
8 A' 1191 1191 24.88 5.41 0.57 0.72
9 A' 974 974 4.32 4.86 0.33 0.50
10 A' 504 504 6.14 1.15 0.58 0.73
11 A" 3540 3540 0.42 30.73 0.75 0.86
12 A" 1674 1674 5.64 14.28 0.75 0.86
13 A" 1173 1173 1.12 0.13 0.75 0.86
14 A" 818 818 3.36 3.08 0.75 0.86
15 A" 153 153 0.39 0.47 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13473.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13473.0 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 M06-2X/STO-3G
ABC
1.84343 0.32223 0.28924

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.477 0.000
C2 -0.959 -0.735 0.000
O3 1.235 0.394 0.000
H4 -0.528 1.464 0.000
H5 -0.393 -1.672 0.000
H6 -1.603 -0.698 0.888
H7 -1.603 -0.698 -0.888

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7
C11.54571.23801.11922.18482.17642.1764
C21.54572.46812.24061.09471.09701.0970
O31.23802.46812.06242.63103.16773.1677
H41.11922.24062.06243.13872.57192.5719
H52.18481.09472.63103.13871.78881.7888
H62.17641.09703.16772.57191.78881.7757
H72.17641.09703.16772.57191.78881.7757

picture of Acetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.507 C1 C2 H6 109.716
C1 C2 H7 109.716 C2 C1 O3 124.532
C2 C1 H4 113.475 O3 C1 H4 121.992
H5 C2 H6 109.402 H5 C2 H7 109.402
H6 C2 H7 108.056
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.103      
2 C -0.237      
3 O -0.175      
4 H 0.056      
5 H 0.086      
6 H 0.084      
7 H 0.084      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.635 -0.110 0.000 1.639
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.655 -0.581 0.000
y -0.581 -16.572 0.000
z 0.000 0.000 -16.395
Traceless
 xyz
x -2.171 -0.581 0.000
y -0.581 0.953 0.000
z 0.000 0.000 1.219
Polar
3z2-r22.437
x2-y2-2.083
xy-0.581
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.450 0.072 0.000
y 0.072 1.749 0.000
z 0.000 0.000 1.156


<r2> (average value of r2) Å2
<r2> 47.385
(<r2>)1/2 6.884