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All results from a given calculation for CH3CHO (Acetaldehyde)

using model chemistry: B3PW91/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 B3PW91/daug-cc-pVTZ
 hartrees
Energy at 0K-153.832582
Energy at 298.15K-153.836486
HF Energy-153.832582
Nuclear repulsion energy69.894995
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 B3PW91/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' 3151 3151 7.54 43.21 0.69 0.82
2 A' 3031 3031 1.76 191.17 0.01 0.01
3 A' 2876 2876 118.40 166.06 0.29 0.45
4 A' 1821 1821 194.47 12.77 0.48 0.65
5 A' 1451 1451 22.99 9.62 0.52 0.69
6 A' 1417 1417 10.37 2.93 0.35 0.52
7 A' 1368 1368 27.73 2.45 0.72 0.83
8 A' 1128 1128 25.03 2.59 0.19 0.32
9 A' 890 890 8.72 5.43 0.34 0.50
10 A' 507 507 13.09 1.31 0.29 0.45
11 A" 3091 3091 4.68 59.41 0.75 0.86
12 A" 1460 1460 10.58 3.72 0.75 0.86
13 A" 1131 1131 0.16 1.20 0.75 0.86
14 A" 768 768 1.66 3.06 0.75 0.86
15 A" 157 157 1.05 1.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12124.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12124.3 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 B3PW91/daug-cc-pVTZ
ABC
1.91711 0.34057 0.30542

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/daug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.458 0.000
C2 -0.929 -0.715 0.000
O3 1.201 0.383 0.000
H4 -0.495 1.454 0.000
H5 -0.375 -1.651 0.000
H6 -1.581 -0.663 0.876
H7 -1.581 -0.663 -0.876

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7
C11.49661.20311.11142.14282.12752.1275
C21.49662.39602.21171.08801.09381.0938
O31.20312.39602.00532.57293.09863.0986
H41.11142.21172.00533.10732.53552.5355
H52.14281.08802.57293.10731.78911.7891
H62.12751.09383.09862.53551.78911.7529
H72.12751.09383.09862.53551.78911.7529

picture of Acetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 111.011 C1 C2 H6 109.442
C1 C2 H7 109.442 C2 C1 O3 124.761
C2 C1 H4 115.203 O3 C1 H4 120.036
H5 C2 H6 110.168 H5 C2 H7 110.168
H6 C2 H7 106.501
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.222      
2 C -0.598      
3 O -1.057      
4 H 0.496      
5 H 0.320      
6 H 0.308      
7 H 0.308      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.841 -0.343 0.000 2.862
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.090 -0.760 0.000
y -0.760 -17.838 0.000
z 0.000 0.000 -17.859
Traceless
 xyz
x -3.241 -0.760 0.000
y -0.760 1.636 0.000
z 0.000 0.000 1.605
Polar
3z2-r23.209
x2-y2-3.252
xy-0.760
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.381 0.221 0.000
y 0.221 4.656 0.000
z 0.000 0.000 3.562


<r2> (average value of r2) Å2
<r2> 46.677
(<r2>)1/2 6.832