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All results from a given calculation for CH3CHO (Acetaldehyde)

using model chemistry: B3LYP/daug-cc-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 B3LYP/daug-cc-pVTZ
 hartrees
Energy at 0K-153.896617
Energy at 298.15K-153.900528
HF Energy-153.896617
Nuclear repulsion energy69.809119
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/daug-cc-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' 3134 3134 8.93 44.20 0.67 0.80
2 A' 3022 3022 2.39 192.74 0.01 0.02
3 A' 2870 2870 118.63 169.86 0.29 0.45
4 A' 1804 1804 195.83 12.61 0.51 0.67
5 A' 1460 1460 22.66 9.36 0.53 0.70
6 A' 1421 1421 9.78 3.41 0.35 0.52
7 A' 1380 1380 24.98 2.51 0.72 0.84
8 A' 1130 1130 25.06 2.51 0.18 0.31
9 A' 886 886 9.79 5.95 0.34 0.51
10 A' 510 510 13.21 1.38 0.29 0.45
11 A" 3072 3072 6.29 61.03 0.75 0.86
12 A" 1469 1469 9.95 3.83 0.75 0.86
13 A" 1135 1135 0.11 1.20 0.75 0.86
14 A" 775 775 1.24 3.20 0.75 0.86
15 A" 158 158 1.23 1.06 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12112.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12112.4 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/daug-cc-pVTZ
ABC
1.91530 0.33933 0.30437

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/daug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.460 0.000
C2 -0.931 -0.717 0.000
O3 1.202 0.384 0.000
H4 -0.494 1.453 0.000
H5 -0.376 -1.652 0.000
H6 -1.582 -0.666 0.876
H7 -1.582 -0.666 -0.876

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7
C11.50041.20481.10982.14552.13042.1304
C21.50042.40072.21401.08731.09321.0932
O31.20482.40072.00542.57703.10253.1025
H41.10982.21402.00543.10812.53832.5383
H52.14551.08732.57703.10811.78761.7876
H62.13041.09323.10252.53831.78761.7525
H72.13041.09323.10252.53831.78761.7525

picture of Acetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 111.005 C1 C2 H6 109.451
C1 C2 H7 109.451 C2 C1 O3 124.750
C2 C1 H4 115.212 O3 C1 H4 120.038
H5 C2 H6 110.133 H5 C2 H7 110.133
H6 C2 H7 106.563
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.124      
2 C -0.510      
3 O -1.002      
4 H 0.513      
5 H 0.306      
6 H 0.284      
7 H 0.284      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.860 -0.333 0.000 2.880
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.409 -0.770 0.000
y -0.770 -18.074 0.000
z 0.000 0.000 -18.063
Traceless
 xyz
x -3.341 -0.770 0.000
y -0.770 1.662 0.000
z 0.000 0.000 1.679
Polar
3z2-r23.357
x2-y2-3.335
xy-0.770
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.453 0.217 0.000
y 0.217 4.713 0.000
z 0.000 0.000 3.608


<r2> (average value of r2) Å2
<r2> 46.939
(<r2>)1/2 6.851