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All results from a given calculation for CH3CHO (Acetaldehyde)

using model chemistry: M06-2X/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-153.764498
Energy at 298.15K-153.768395
HF Energy-153.764498
Nuclear repulsion energy69.724491
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/6-31+G**
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' 3194 3041 6.08 51.88 0.72 0.84
2 A' 3070 2923 1.78 162.61 0.01 0.02
3 A' 2962 2821 112.76 153.38 0.34 0.50
4 A' 1877 1787 205.89 12.06 0.52 0.68
5 A' 1470 1400 22.06 14.95 0.67 0.80
6 A' 1432 1363 16.75 5.38 0.41 0.58
7 A' 1385 1318 22.39 3.71 0.67 0.80
8 A' 1137 1082 25.83 3.17 0.36 0.53
9 A' 904 861 5.62 6.18 0.40 0.57
10 A' 511 487 14.85 1.25 0.39 0.56
11 A" 3140 2990 5.15 69.49 0.75 0.86
12 A" 1478 1408 13.50 8.49 0.75 0.86
13 A" 1141 1087 0.17 1.34 0.75 0.86
14 A" 775 738 1.22 5.94 0.75 0.86
15 A" 145 138 1.23 1.25 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12309.9 cm-1
Scaled (by 0.9522) Zero Point Vibrational Energy (zpe) 11721.5 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/6-31+G**
ABC
1.89348 0.33975 0.30432

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.464 0.000
C2 -0.935 -0.712 0.000
O3 1.204 0.375 0.000
H4 -0.481 1.465 0.000
H5 -0.372 -1.646 0.000
H6 -1.584 -0.663 0.881
H7 -1.584 -0.663 -0.881

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7
C11.50281.20721.11002.14242.13472.1347
C21.50282.39932.22371.09031.09521.0952
O31.20722.39932.00672.56213.10283.1028
H41.11002.22372.00673.11222.55362.5536
H52.14241.09032.56213.11221.79211.7921
H62.13471.09523.10282.55361.79211.7610
H72.13471.09523.10282.55361.79211.7610

picture of Acetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.405 C1 C2 H6 109.504
C1 C2 H7 109.504 C2 C1 O3 124.224
C2 C1 H4 115.846 O3 C1 H4 119.930
H5 C2 H6 110.168 H5 C2 H7 110.168
H6 C2 H7 107.026
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.256      
2 C -0.565      
3 O -0.374      
4 H 0.121      
5 H 0.196      
6 H 0.183      
7 H 0.183      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.948 -0.257 0.000 2.959
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.409 -0.856 0.000
y -0.856 -17.936 0.000
z 0.000 0.000 -18.059
Traceless
 xyz
x -3.411 -0.856 0.000
y -0.856 1.798 0.000
z 0.000 0.000 1.613
Polar
3z2-r23.226
x2-y2-3.472
xy-0.856
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.026 0.114 0.000
y 0.114 4.069 0.000
z 0.000 0.000 3.041


<r2> (average value of r2) Å2
<r2> 46.927
(<r2>)1/2 6.850