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All results from a given calculation for CH3CHO (Acetaldehyde)

using model chemistry: B2PLYP/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 B2PLYP/daug-cc-pVTZ
 hartrees
Energy at 0K-153.772468
Energy at 298.15K-153.776386
HF Energy-153.582916
Nuclear repulsion energy69.766815
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 B2PLYP/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' 3165 3165 7.77 41.37 0.70 0.82
2 A' 3047 3047 2.47 191.05 0.01 0.01
3 A' 2913 2913 112.51 165.45 0.28 0.44
4 A' 1780 1780 169.43 11.65 0.45 0.62
5 A' 1474 1474 23.22 9.29 0.53 0.69
6 A' 1427 1427 9.61 4.50 0.29 0.45
7 A' 1391 1391 21.25 2.01 0.74 0.85
8 A' 1139 1139 23.47 2.78 0.17 0.28
9 A' 896 896 8.44 6.03 0.32 0.48
10 A' 509 509 13.15 1.50 0.29 0.45
11 A" 3108 3108 5.98 58.14 0.75 0.86
12 A" 1485 1485 9.72 3.75 0.75 0.86
13 A" 1140 1140 0.04 1.05 0.75 0.86
14 A" 780 780 1.21 3.04 0.75 0.86
15 A" 159 159 1.37 0.97 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12206.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12206.2 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 B2PLYP/daug-cc-pVTZ
ABC
1.91099 0.33925 0.30419

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/daug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.460 0.000
C2 -0.936 -0.711 0.000
O3 1.206 0.376 0.000
H4 -0.486 1.455 0.000
H5 -0.384 -1.646 0.000
H6 -1.584 -0.656 0.876
H7 -1.584 -0.656 -0.876

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7
C11.49931.20931.10672.14132.12702.1270
C21.49932.40202.21241.08591.09141.0914
O31.20932.40202.00672.57243.10163.1016
H41.10672.21242.00673.10292.53612.5361
H52.14131.08592.57243.10291.78581.7858
H62.12701.09143.10162.53611.78581.7523
H72.12701.09143.10162.53611.78581.7523

picture of Acetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.833 C1 C2 H6 109.362
C1 C2 H7 109.362 C2 C1 O3 124.604
C2 C1 H4 115.368 O3 C1 H4 120.028
H5 C2 H6 110.203 H5 C2 H7 110.203
H6 C2 H7 106.787
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.072      
2 C -0.673      
3 O -0.998      
4 H 0.575      
5 H 0.407      
6 H 0.381      
7 H 0.381      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.842 -0.289 0.000 2.857
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.423 -0.786 0.010
y -0.786 -18.091 0.004
z 0.010 0.004 -18.090
Traceless
 xyz
x -3.333 -0.786 0.010
y -0.786 1.666 0.004
z 0.010 0.004 1.667
Polar
3z2-r23.335
x2-y2-3.333
xy-0.786
xz0.010
yz0.004


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.395 0.203 -0.001
y 0.203 4.627 -0.000
z -0.001 -0.000 3.574


<r2> (average value of r2) Å2
<r2> 46.950
(<r2>)1/2 6.852