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All results from a given calculation for CH3CHO (Acetaldehyde)

using model chemistry: TPSSh/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at TPSSh/Def2TZVPP
 hartrees
Energy at 0K-153.899699
Energy at 298.15K-153.903602
HF Energy-153.899699
Nuclear repulsion energy69.705172
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 TPSSh/Def2TZVPP
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' 3139 3139 11.38 48.40 0.68 0.81
2 A' 3020 3020 2.87 172.71 0.01 0.02
3 A' 2867 2867 128.87 158.37 0.32 0.48
4 A' 1794 1794 178.04 9.90 0.59 0.74
5 A' 1469 1469 21.20 12.27 0.60 0.75
6 A' 1424 1424 10.42 5.53 0.44 0.61
7 A' 1380 1380 20.44 3.73 0.72 0.84
8 A' 1130 1130 25.22 2.50 0.22 0.36
9 A' 883 883 9.73 6.07 0.33 0.50
10 A' 498 498 12.79 1.40 0.47 0.64
11 A" 3075 3075 8.51 63.62 0.75 0.86
12 A" 1479 1479 8.83 6.55 0.75 0.86
13 A" 1133 1133 0.06 1.00 0.75 0.86
14 A" 766 766 1.03 4.43 0.75 0.86
15 A" 160 160 0.78 1.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12107.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12107.5 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 TPSSh/Def2TZVPP
ABC
1.90536 0.33870 0.30367

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.461 0.000
C2 -0.933 -0.716 0.000
O3 1.205 0.381 0.000
H4 -0.493 1.457 0.000
H5 -0.377 -1.652 0.000
H6 -1.585 -0.664 0.878
H7 -1.585 -0.664 -0.878

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7
C11.50211.20741.11122.14632.13322.1332
C21.50212.40302.21721.08861.09491.0949
O31.20742.40302.00992.57593.10633.1063
H41.11122.21722.00993.11112.54242.5424
H52.14631.08862.57593.11111.79071.7907
H62.13321.09493.10632.54241.79071.7554
H72.13321.09493.10632.54241.79071.7554

picture of Acetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.873 C1 C2 H6 109.456
C1 C2 H7 109.456 C2 C1 O3 124.607
C2 C1 H4 115.263 O3 C1 H4 120.130
H5 C2 H6 110.189 H5 C2 H7 110.189
H6 C2 H7 106.581
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.146      
2 C -0.078      
3 O -0.262      
4 H 0.014      
5 H 0.068      
6 H 0.056      
7 H 0.056      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.741 -0.330 0.000 2.761
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.128 0.198 0.000
y 0.198 4.346 0.000
z 0.000 0.000 3.263


<r2> (average value of r2) Å2
<r2> 46.850
(<r2>)1/2 6.845