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All results from a given calculation for CH3CHO (Acetaldehyde)

using model chemistry: B2PLYP/daug-cc-pVDZ

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-pVDZ
 hartrees
Energy at 0K-153.703176
Energy at 298.15K-153.707097
HF Energy-153.542690
Nuclear repulsion energy69.365831
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-pVDZ
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' 3169 3169 9.20 42.56 0.72 0.84
2 A' 3044 3044 2.87 195.62 0.01 0.01
3 A' 2923 2923 116.06 171.13 0.29 0.44
4 A' 1772 1772 169.03 11.53 0.47 0.64
5 A' 1445 1445 22.57 10.42 0.53 0.69
6 A' 1415 1415 8.83 4.07 0.28 0.44
7 A' 1365 1365 21.14 1.91 0.75 0.86
8 A' 1130 1130 22.08 3.36 0.17 0.29
9 A' 895 895 6.60 6.21 0.32 0.48
10 A' 504 504 13.23 1.49 0.28 0.44
11 A" 3115 3115 7.36 60.25 0.75 0.86
12 A" 1457 1457 9.68 4.01 0.75 0.86
13 A" 1125 1125 0.01 1.14 0.75 0.86
14 A" 769 769 1.19 3.20 0.75 0.86
15 A" 161 161 1.36 1.04 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12144.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12144.4 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 B2PLYP/daug-cc-pVDZ
ABC
1.88391 0.33598 0.30116

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.463 0.000
C2 -0.941 -0.712 0.000
O3 1.213 0.375 0.000
H4 -0.485 1.466 0.000
H5 -0.385 -1.656 0.000
H6 -1.594 -0.655 0.884
H7 -1.594 -0.655 -0.884

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7
C11.50551.21661.11512.15322.13812.1381
C21.50552.41342.22601.09521.10041.1004
O31.21662.41342.01932.58443.11853.1185
H41.11512.22602.01933.12402.55142.5514
H52.15321.09522.58443.12401.80161.8016
H62.13811.10043.11852.55141.80161.7673
H72.13811.10043.11852.55141.80161.7673

picture of Acetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.786 C1 C2 H6 109.280
C1 C2 H7 109.280 C2 C1 O3 124.563
C2 C1 H4 115.496 O3 C1 H4 119.941
H5 C2 H6 110.280 H5 C2 H7 110.280
H6 C2 H7 106.845
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.713      
2 C 1.175      
3 O -0.613      
4 H -0.555      
5 H -0.346      
6 H -0.187      
7 H -0.187      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.851 -0.283 0.000 2.865
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.589 -0.787 0.010
y -0.787 -18.229 0.004
z 0.010 0.004 -18.202
Traceless
 xyz
x -3.374 -0.787 0.010
y -0.787 1.666 0.004
z 0.010 0.004 1.707
Polar
3z2-r23.415
x2-y2-3.360
xy-0.787
xz0.010
yz0.004


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.485 0.199 -0.001
y 0.199 4.704 -0.000
z -0.001 -0.000 3.622


<r2> (average value of r2) Å2
<r2> 47.407
(<r2>)1/2 6.885