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All results from a given calculation for CH3CHO (Acetaldehyde)

using model chemistry: HF/Sadlej_pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/Sadlej_pVTZ
 hartrees
Energy at 0K-152.959290
Energy at 298.15K-152.963325
HF Energy-152.959290
Nuclear repulsion energy70.269013
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 HF/Sadlej_pVTZ
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' 3291 3005 13.63      
2 A' 3168 2893 5.48      
3 A' 3088 2819 95.93      
4 A' 2005 1831 257.98      
5 A' 1562 1426 20.48      
6 A' 1529 1396 18.83      
7 A' 1496 1366 8.11      
8 A' 1214 1109 25.33      
9 A' 958 875 4.05      
10 A' 546 499 20.24      
11 A" 3236 2955 13.48      
12 A" 1574 1437 8.59      
13 A" 1245 1137 0.36      
14 A" 843 770 0.32      
15 A" 164 150 2.92      

Unscaled Zero Point Vibrational Energy (zpe) 12959.4 cm-1
Scaled (by 0.913) Zero Point Vibrational Energy (zpe) 11831.9 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 HF/Sadlej_pVTZ
ABC
1.92809 0.34370 0.30832

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.461 0.000
C2 -0.917 -0.727 0.000
O3 1.185 0.397 0.000
H4 -0.499 1.447 0.000
H5 -0.347 -1.653 0.000
H6 -1.565 -0.685 0.879
H7 -1.565 -0.685 -0.879

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7
C11.50061.18691.10542.14182.12912.1291
C21.50062.38392.21351.08731.09261.0926
O31.18692.38391.98512.55903.08293.0829
H41.10542.21351.98513.10332.53992.5399
H52.14181.08732.55903.10331.78671.7867
H62.12911.09263.08292.53991.78671.7582
H72.12911.09263.08292.53991.78671.7582

picture of Acetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.697 C1 C2 H6 109.369
C1 C2 H7 109.369 C2 C1 O3 124.593
C2 C1 H4 115.457 O3 C1 H4 119.950
H5 C2 H6 110.095 H5 C2 H7 110.095
H6 C2 H7 107.141
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Sadlej_pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.464      
2 C 2.978      
3 O -0.206      
4 H -0.687      
5 H -0.643      
6 H -0.489      
7 H -0.489      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -3.106 -0.287 0.000 3.119
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.558 -1.040 0.000
y -1.040 -17.789 0.000
z 0.000 0.000 -17.918
Traceless
 xyz
x -3.704 -1.040 0.000
y -1.040 1.948 0.000
z 0.000 0.000 1.755
Polar
3z2-r23.511
x2-y2-3.768
xy-1.040
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.883 0.154 0.000
y 0.154 4.152 0.000
z 0.000 0.000 3.343


<r2> (average value of r2) Å2
<r2> 46.485
(<r2>)1/2 6.818