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All results from a given calculation for CH3CHO (Acetaldehyde)

using model chemistry: B97D3/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B97D3/6-311+G(3df,2p)
 hartrees
Energy at 0K-153.797415
Energy at 298.15K-153.801287
HF Energy-153.797415
Nuclear repulsion energy69.524748
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 B97D3/6-311+G(3df,2p)
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' 3088 3048 12.39 46.49 0.68 0.81
2 A' 2967 2928 3.24 185.42 0.01 0.02
3 A' 2778 2742 148.37 175.23 0.32 0.48
4 A' 1761 1738 190.00 12.65 0.52 0.69
5 A' 1432 1413 22.28 10.01 0.54 0.70
6 A' 1391 1373 8.86 3.70 0.43 0.60
7 A' 1343 1325 26.50 3.00 0.73 0.84
8 A' 1102 1087 26.52 2.62 0.18 0.31
9 A' 862 851 11.80 6.36 0.41 0.58
10 A' 500 494 11.61 1.45 0.31 0.47
11 A" 3023 2983 8.28 63.25 0.75 0.86
12 A" 1439 1420 9.67 3.96 0.75 0.86
13 A" 1102 1088 0.10 1.79 0.75 0.86
14 A" 751 741 1.12 3.51 0.75 0.86
15 A" 152 150 0.90 1.26 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11844.7 cm-1
Scaled (by 0.987) Zero Point Vibrational Energy (zpe) 11690.7 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 B97D3/6-311+G(3df,2p)
ABC
1.90444 0.33631 0.30176

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.460 0.000
C2 -0.932 -0.723 0.000
O3 1.207 0.390 0.000
H4 -0.508 1.456 0.000
H5 -0.379 -1.663 0.000
H6 -1.588 -0.669 0.879
H7 -1.588 -0.669 -0.879

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7
C11.50561.20901.11832.15662.13712.1371
C21.50562.41152.21961.09141.09781.0978
O31.20902.41152.01902.59493.11553.1155
H41.11832.21962.01903.12212.54032.5403
H52.15661.09142.59493.12211.79551.7955
H62.13711.09783.11552.54031.79551.7573
H72.13711.09783.11552.54031.79551.7573

picture of Acetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 111.284 C1 C2 H6 109.347
C1 C2 H7 109.347 C2 C1 O3 124.968
C2 C1 H4 114.738 O3 C1 H4 120.294
H5 C2 H6 110.201 H5 C2 H7 110.201
H6 C2 H7 106.332
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.390      
2 C -0.327      
3 O -0.576      
4 H 0.094      
5 H 0.135      
6 H 0.142      
7 H 0.142      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.772 -0.380 0.000 2.798
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.245 -0.712 0.000
y -0.712 -18.068 0.000
z 0.000 0.000 -17.969
Traceless
 xyz
x -3.227 -0.712 0.000
y -0.712 1.539 0.000
z 0.000 0.000 1.688
Polar
3z2-r23.375
x2-y2-3.177
xy-0.712
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.584 0.267 0.000
y 0.267 4.796 0.000
z 0.000 0.000 3.572


<r2> (average value of r2) Å2
<r2> 47.186
(<r2>)1/2 6.869