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All results from a given calculation for CH3CHO (Acetaldehyde)

using model chemistry: B3LYP/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/TZVP
 hartrees
Energy at 0K-153.892225
Energy at 298.15K-153.896143
HF Energy-153.892225
Nuclear repulsion energy69.741319
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 B3LYP/TZVP
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' 3140 3031 10.15 51.13 0.69 0.82
2 A' 3025 2921 2.15 167.30 0.01 0.02
3 A' 2875 2776 128.06 158.88 0.33 0.49
4 A' 1810 1747 188.00 10.15 0.60 0.75
5 A' 1465 1414 22.38 14.68 0.62 0.76
6 A' 1433 1383 9.49 5.55 0.53 0.69
7 A' 1384 1337 27.98 4.45 0.74 0.85
8 A' 1132 1093 25.96 2.65 0.31 0.48
9 A' 886 856 10.15 5.69 0.38 0.55
10 A' 514 496 12.98 1.59 0.47 0.64
11 A" 3079 2972 7.83 65.94 0.75 0.86
12 A" 1473 1422 12.29 8.75 0.75 0.86
13 A" 1140 1100 0.36 1.13 0.75 0.86
14 A" 780 753 0.70 6.41 0.75 0.86
15 A" 154 149 0.75 1.14 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12144.7 cm-1
Scaled (by 0.9654) Zero Point Vibrational Energy (zpe) 11724.5 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 B3LYP/TZVP
ABC
1.91211 0.33860 0.30376

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.460 0.000
C2 -0.931 -0.718 0.000
O3 1.203 0.386 0.000
H4 -0.496 1.455 0.000
H5 -0.374 -1.653 0.000
H6 -1.583 -0.670 0.878
H7 -1.583 -0.670 -0.878

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7
C11.50211.20551.11102.14652.13432.1343
C21.50212.40322.21591.08881.09451.0945
O31.20552.40322.00732.57773.10653.1065
H41.11102.21592.00733.11022.54282.5428
H52.14651.08882.57773.11021.78911.7891
H62.13431.09453.10652.54281.78911.7556
H72.13431.09453.10652.54281.78911.7556

picture of Acetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.869 C1 C2 H6 109.557
C1 C2 H7 109.557 C2 C1 O3 124.774
C2 C1 H4 115.166 O3 C1 H4 120.060
H5 C2 H6 110.060 H5 C2 H7 110.060
H6 C2 H7 106.644
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.133      
2 C -0.306      
3 O -0.277      
4 H 0.057      
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
  -2.848 -0.324 0.000 2.867
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.412 -0.822 0.000
y -0.822 -18.108 0.000
z 0.000 0.000 -18.004
Traceless
 xyz
x -3.356 -0.822 0.000
y -0.822 1.600 0.000
z 0.000 0.000 1.756
Polar
3z2-r23.512
x2-y2-3.304
xy-0.822
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.040 0.119 0.000
y 0.119 4.119 0.000
z 0.000 0.000 3.087


<r2> (average value of r2) Å2
<r2> 47.007
(<r2>)1/2 6.856