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All results from a given calculation for CH3CHO (Acetaldehyde)

using model chemistry: TPSSh/6-311G**

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/6-311G**
 hartrees
Energy at 0K-153.877656
Energy at 298.15K-153.881565
HF Energy-153.877656
Nuclear repulsion energy69.593567
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/6-311G**
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' 3142 3142 14.41 54.60 0.70 0.83
2 A' 3021 3021 3.54 154.05 0.01 0.02
3 A' 2862 2862 152.50 168.71 0.34 0.51
4 A' 1805 1805 174.47 8.48 0.70 0.82
5 A' 1472 1472 21.17 16.57 0.64 0.78
6 A' 1427 1427 12.35 7.09 0.59 0.74
7 A' 1379 1379 21.16 5.05 0.75 0.86
8 A' 1129 1129 25.94 2.38 0.32 0.49
9 A' 882 882 9.23 5.71 0.40 0.57
10 A' 498 498 13.14 1.56 0.52 0.68
11 A" 3080 3080 12.26 72.47 0.75 0.86
12 A" 1484 1484 10.49 9.79 0.75 0.86
13 A" 1133 1133 0.27 1.14 0.75 0.86
14 A" 769 769 0.83 5.80 0.75 0.86
15 A" 160 160 0.39 1.13 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12120.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12120.6 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 TPSSh/6-311G**
ABC
1.89848 0.33751 0.30261

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.463 0.000
C2 -0.934 -0.719 0.000
O3 1.206 0.384 0.000
H4 -0.500 1.458 0.000
H5 -0.369 -1.651 0.000
H6 -1.587 -0.672 0.880
H7 -1.587 -0.672 -0.880

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7
C11.50661.20831.11342.14612.14012.1401
C21.50662.40752.21991.09011.09621.0962
O31.20832.40752.01542.57333.11233.1123
H41.11342.21992.01543.11192.54822.5482
H52.14611.09012.57333.11191.79291.7929
H62.14011.09623.11232.54821.79291.7593
H72.14011.09623.11232.54821.79291.7593

picture of Acetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.450 C1 C2 H6 109.609
C1 C2 H7 109.609 C2 C1 O3 124.572
C2 C1 H4 115.016 O3 C1 H4 120.412
H5 C2 H6 110.185 H5 C2 H7 110.185
H6 C2 H7 106.730
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.165      
2 C -0.332      
3 O -0.291      
4 H 0.064      
5 H 0.136      
6 H 0.129      
7 H 0.129      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.636 -0.280 0.000 2.651
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 4.704 0.143 0.000
y 0.143 4.009 0.000
z 0.000 0.000 2.839


<r2> (average value of r2) Å2
<r2> 46.900
(<r2>)1/2 6.848