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All results from a given calculation for CH3CHO (Acetaldehyde)

using model chemistry: M06-2X/6-31G(2df,p)

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/6-31G(2df,p)
 hartrees
Energy at 0K-153.767000
Energy at 298.15K-153.770928
HF Energy-153.767000
Nuclear repulsion energy69.896914
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/6-31G(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 A' 3191 3039 5.62 48.90 0.73 0.84
2 A' 3065 2919 1.09 119.64 0.01 0.02
3 A' 2934 2794 114.75 116.17 0.34 0.51
4 A' 1897 1807 169.59 7.77 0.48 0.65
5 A' 1464 1394 16.00 20.20 0.68 0.81
6 A' 1436 1368 13.84 6.10 0.60 0.75
7 A' 1374 1308 19.75 4.04 0.75 0.86
8 A' 1131 1078 25.23 3.56 0.39 0.56
9 A' 899 856 6.08 6.23 0.35 0.51
10 A' 506 482 14.12 0.92 0.38 0.55
11 A" 3138 2989 4.46 65.05 0.75 0.86
12 A" 1474 1404 8.31 12.30 0.75 0.86
13 A" 1146 1091 0.78 1.41 0.75 0.86
14 A" 771 735 0.85 5.69 0.75 0.86
15 A" 167 159 0.67 0.88 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12295.9 cm-1
Scaled (by 0.9524) Zero Point Vibrational Energy (zpe) 11710.6 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 M06-2X/6-31G(2df,p)
ABC
1.90608 0.34075 0.30539

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.463 0.000
C2 -0.927 -0.721 0.000
O3 1.196 0.388 0.000
H4 -0.504 1.454 0.000
H5 -0.353 -1.647 0.000
H6 -1.577 -0.679 0.879
H7 -1.577 -0.679 -0.879

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7
C11.50411.19881.11132.13962.13642.1364
C21.50412.39542.21581.08941.09431.0943
O31.19882.39542.00702.55723.09873.0987
H41.11132.21582.00703.10452.54402.5440
H52.13961.08942.55723.10451.79151.7915
H62.13641.09433.09872.54401.79151.7584
H72.13641.09433.09872.54401.79151.7584

picture of Acetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.149 C1 C2 H6 109.602
C1 C2 H7 109.602 C2 C1 O3 124.418
C2 C1 H4 114.991 O3 C1 H4 120.592
H5 C2 H6 110.254 H5 C2 H7 110.254
H6 C2 H7 106.923
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.196      
2 C -0.499      
3 O -0.267      
4 H 0.091      
5 H 0.163      
6 H 0.158      
7 H 0.158      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.580 -0.291 0.000 2.597
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.416 -0.828 0.000
y -0.828 -17.656 0.000
z 0.000 0.000 -17.608
Traceless
 xyz
x -2.784 -0.828 0.000
y -0.828 1.356 0.000
z 0.000 0.000 1.428
Polar
3z2-r22.856
x2-y2-2.760
xy-0.828
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.415 0.138 0.000
y 0.138 3.866 0.000
z 0.000 0.000 2.836


<r2> (average value of r2) Å2
<r2> 46.455
(<r2>)1/2 6.816