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All results from a given calculation for CH3CHO (Acetaldehyde)

using model chemistry: B97D3/6-31G(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 B97D3/6-31G(2df,p)
 hartrees
Energy at 0K-153.749621
Energy at 298.15K-153.753498
HF Energy-153.749621
Nuclear repulsion energy69.329691
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 B97D3/6-31G(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' 3105 3105 12.80 51.22 0.71 0.83
2 A' 2977 2977 2.98 127.54 0.01 0.02
3 A' 2773 2773 158.29 135.16 0.34 0.51
4 A' 1787 1787 153.57 7.34 0.47 0.64
5 A' 1432 1432 15.24 20.83 0.66 0.80
6 A' 1402 1402 9.51 7.20 0.65 0.79
7 A' 1338 1338 19.72 7.18 0.70 0.83
8 A' 1099 1099 25.01 2.99 0.39 0.56
9 A' 859 859 11.12 5.92 0.36 0.53
10 A' 492 492 10.78 1.10 0.43 0.60
11 A" 3041 3041 8.91 69.12 0.75 0.86
12 A" 1443 1443 6.79 12.09 0.75 0.86
13 A" 1107 1107 1.00 1.50 0.75 0.86
14 A" 751 751 0.68 5.99 0.75 0.86
15 A" 163 163 0.22 1.05 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11883.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11883.5 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 B97D3/6-31G(2df,p)
ABC
1.89535 0.33406 0.29982

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.462 0.000
C2 -0.932 -0.730 0.000
O3 1.208 0.398 0.000
H4 -0.527 1.453 0.000
H5 -0.367 -1.667 0.000
H6 -1.590 -0.682 0.881
H7 -1.590 -0.682 -0.881

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7
C11.51301.21011.12242.16052.14792.1479
C21.51302.41972.22021.09471.10071.1007
O31.21012.41972.03052.59773.12653.1265
H41.12242.22022.03053.12432.54302.5430
H52.16051.09472.59773.12431.80071.8007
H62.14791.10073.12652.54301.80071.7627
H72.14791.10073.12652.54301.80071.7627

picture of Acetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.874 C1 C2 H6 109.521
C1 C2 H7 109.521 C2 C1 O3 125.023
C2 C1 H4 113.982 O3 C1 H4 120.996
H5 C2 H6 110.213 H5 C2 H7 110.213
H6 C2 H7 106.396
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.174      
2 C -0.454      
3 O -0.229      
4 H 0.069      
5 H 0.148      
6 H 0.146      
7 H 0.146      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.476 -0.375 0.000 2.504
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.237 -0.735 0.000
y -0.735 -17.728 0.000
z 0.000 0.000 -17.480
Traceless
 xyz
x -2.633 -0.735 0.000
y -0.735 1.130 0.000
z 0.000 0.000 1.503
Polar
3z2-r23.005
x2-y2-2.509
xy-0.735
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.598 0.202 0.000
y 0.202 4.049 0.000
z 0.000 0.000 2.875


<r2> (average value of r2) Å2
<r2> 47.028
(<r2>)1/2 6.858