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All results from a given calculation for CH3CHO (Acetaldehyde)

using model chemistry: B2PLYP/aug-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/aug-cc-pVDZ
 hartrees
Energy at 0K-153.701984
Energy at 298.15K-153.705903
HF Energy-153.541998
Nuclear repulsion energy69.362266
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/aug-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' 3175 3175 8.73 42.90 0.71 0.83
2 A' 3048 3048 2.85 192.34 0.01 0.01
3 A' 2927 2927 115.42 166.58 0.29 0.45
4 A' 1770 1770 168.12 11.47 0.51 0.67
5 A' 1444 1444 22.63 10.32 0.54 0.70
6 A' 1414 1414 9.02 4.25 0.27 0.42
7 A' 1366 1366 21.02 1.96 0.75 0.86
8 A' 1130 1130 21.96 3.22 0.16 0.28
9 A' 896 896 6.54 6.12 0.32 0.48
10 A' 504 504 13.58 1.42 0.32 0.48
11 A" 3118 3118 6.99 59.89 0.75 0.86
12 A" 1455 1455 9.54 4.05 0.75 0.86
13 A" 1124 1124 0.01 1.21 0.75 0.86
14 A" 769 769 1.20 3.12 0.75 0.86
15 A" 161 161 1.38 1.08 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12150.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12150.0 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/aug-cc-pVDZ
ABC
1.88295 0.33607 0.30122

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.462 0.000
C2 -0.942 -0.711 0.000
O3 1.214 0.374 0.000
H4 -0.485 1.467 0.000
H5 -0.386 -1.655 0.000
H6 -1.595 -0.653 0.884
H7 -1.595 -0.653 -0.884

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7
C11.50481.21701.11562.15252.13772.1377
C21.50482.41312.22581.09551.10071.1007
O31.21702.41312.02032.58353.11853.1185
H41.11562.22582.02033.12392.55112.5511
H52.15251.09552.58353.12391.80231.8023
H62.13771.10073.11852.55111.80231.7676
H72.13771.10073.11852.55111.80231.7676

picture of Acetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.760 C1 C2 H6 109.279
C1 C2 H7 109.279 C2 C1 O3 124.553
C2 C1 H4 115.490 O3 C1 H4 119.956
H5 C2 H6 110.303 H5 C2 H7 110.303
H6 C2 H7 106.827
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.674      
2 C 0.423      
3 O -0.476      
4 H -0.219      
5 H -0.175      
6 H -0.114      
7 H -0.114      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.865 -0.281 0.000 2.879
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.635 -0.790 0.011
y -0.790 -18.220 0.004
z 0.011 0.004 -18.183
Traceless
 xyz
x -3.434 -0.790 0.011
y -0.790 1.689 0.004
z 0.011 0.004 1.745
Polar
3z2-r23.490
x2-y2-3.415
xy-0.790
xz0.011
yz0.004


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.469 0.196 -0.001
y 0.196 4.634 -0.000
z -0.001 -0.000 3.555


<r2> (average value of r2) Å2
<r2> 47.405
(<r2>)1/2 6.885