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All results from a given calculation for CH3CHO (Acetaldehyde)

using model chemistry: B97D3/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-153.762126
Energy at 298.15K-153.765998
HF Energy-153.762126
Nuclear repulsion energy69.172697
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/aug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3102 3102 13.39 47.62 0.70 0.82
2 A' 2971 2971 3.76 206.48 0.01 0.01
3 A' 2798 2798 152.49 191.51 0.30 0.47
4 A' 1746 1746 187.06 13.00 0.55 0.71
5 A' 1403 1403 20.95 11.43 0.51 0.67
6 A' 1380 1380 8.59 2.56 0.41 0.58
7 A' 1320 1320 25.72 3.18 0.73 0.85
8 A' 1096 1096 23.81 3.03 0.19 0.31
9 A' 867 867 9.60 6.45 0.41 0.58
10 A' 496 496 11.82 1.33 0.31 0.48
11 A" 3039 3039 9.09 65.82 0.75 0.86
12 A" 1413 1413 9.09 4.09 0.75 0.86
13 A" 1089 1089 0.02 1.64 0.75 0.86
14 A" 744 744 1.17 3.85 0.75 0.86
15 A" 157 157 0.86 1.43 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11810.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11810.3 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/aug-cc-pVDZ
ABC
1.87748 0.33393 0.29941

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.461 0.000
C2 -0.940 -0.718 0.000
O3 1.216 0.382 0.000
H4 -0.501 1.468 0.000
H5 -0.385 -1.667 0.000
H6 -1.599 -0.659 0.885
H7 -1.599 -0.659 -0.885

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7
C11.50851.21811.12452.16272.14382.1438
C21.50852.42032.23031.09921.10511.1051
O31.21812.42032.03132.59963.12883.1288
H41.12452.23032.03133.13722.55242.5524
H52.16271.09922.59963.13721.80961.8096
H62.14381.10513.12882.55241.80961.7704
H72.14381.10513.12882.55241.80961.7704

picture of Acetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 111.087 C1 C2 H6 109.243
C1 C2 H7 109.243 C2 C1 O3 124.814
C2 C1 H4 115.000 O3 C1 H4 120.186
H5 C2 H6 110.351 H5 C2 H7 110.351
H6 C2 H7 106.446
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.681      
2 C 0.429      
3 O -0.462      
4 H -0.233      
5 H -0.186      
6 H -0.114      
7 H -0.114      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.793 -0.362 0.000 2.817
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.374 -0.705 0.000
y -0.705 -18.150 0.000
z 0.000 0.000 -18.011
Traceless
 xyz
x -3.294 -0.705 0.000
y -0.705 1.542 0.000
z 0.000 0.000 1.752
Polar
3z2-r23.503
x2-y2-3.224
xy-0.705
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.753 0.239 0.000
y 0.239 4.940 0.000
z 0.000 0.000 3.670


<r2> (average value of r2) Å2
<r2> 47.526
(<r2>)1/2 6.894