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All results from a given calculation for CH3CHO (Acetaldehyde)

using model chemistry: wB97X-D/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 wB97X-D/6-311G**
 hartrees
Energy at 0K-153.820932
Energy at 298.15K-153.824853
HF Energy-153.820932
Nuclear repulsion energy69.865335
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 wB97X-D/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' 3165 3027 10.24 52.31 0.73 0.84
2 A' 3043 2911 2.38 145.37 0.01 0.02
3 A' 2895 2769 136.10 152.28 0.33 0.50
4 A' 1863 1782 188.54 8.67 0.71 0.83
5 A' 1465 1402 22.35 16.05 0.64 0.78
6 A' 1436 1374 14.13 5.49 0.53 0.69
7 A' 1382 1322 26.62 3.95 0.70 0.82
8 A' 1135 1086 26.12 2.26 0.33 0.49
9 A' 896 857 7.76 5.43 0.39 0.56
10 A' 514 491 14.57 1.46 0.49 0.65
11 A" 3113 2978 8.86 67.91 0.75 0.86
12 A" 1475 1411 12.84 9.32 0.75 0.86
13 A" 1144 1094 0.69 1.07 0.75 0.86
14 A" 781 747 1.05 5.40 0.75 0.86
15 A" 154 147 0.56 1.02 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12230.1 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 11698.1 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 wB97X-D/6-311G**
ABC
1.90936 0.34023 0.30507

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.462 0.000
C2 -0.928 -0.720 0.000
O3 1.198 0.388 0.000
H4 -0.502 1.454 0.000
H5 -0.359 -1.649 0.000
H6 -1.578 -0.677 0.879
H7 -1.578 -0.677 -0.879

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7
C11.50271.20031.11212.14132.13532.1353
C21.50272.39722.21571.08961.09471.0947
O31.20032.39722.00682.56363.10053.1005
H41.11212.21572.00683.10682.54382.5438
H52.14131.08962.56363.10681.79101.7910
H62.13531.09473.10052.54381.79101.7588
H72.13531.09473.10052.54381.79101.7588

picture of Acetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.372 C1 C2 H6 109.593
C1 C2 H7 109.593 C2 C1 O3 124.590
C2 C1 H4 115.037 O3 C1 H4 120.373
H5 C2 H6 110.157 H5 C2 H7 110.157
H6 C2 H7 106.903
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.155      
2 C -0.366      
3 O -0.283      
4 H 0.072      
5 H 0.145      
6 H 0.138      
7 H 0.138      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.721 -0.278 0.000 2.735
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.793 -0.882 0.000
y -0.882 -17.809 0.000
z 0.000 0.000 -17.724
Traceless
 xyz
x -3.026 -0.882 0.000
y -0.882 1.449 0.000
z 0.000 0.000 1.577
Polar
3z2-r23.154
x2-y2-2.984
xy-0.882
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.588 0.105 0.000
y 0.105 3.881 0.000
z 0.000 0.000 2.822


<r2> (average value of r2) Å2
<r2> 46.626
(<r2>)1/2 6.828