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All results from a given calculation for CH3CHO (Acetaldehyde)

using model chemistry: B97D3/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B97D3/6-31G
 hartrees
Energy at 0K-153.693178
Energy at 298.15K-153.697069
HF Energy-153.693178
Nuclear repulsion energy68.663669
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 B97D3/6-31G
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' 3122 3122 16.34 53.54 0.71 0.83
2 A' 2982 2982 4.08 142.82 0.01 0.02
3 A' 2858 2858 155.70 143.98 0.36 0.53
4 A' 1690 1690 115.51 3.99 0.54 0.70
5 A' 1477 1477 24.26 25.51 0.69 0.81
6 A' 1418 1418 5.71 12.98 0.67 0.80
7 A' 1399 1399 32.45 10.55 0.70 0.82
8 A' 1128 1128 27.98 3.80 0.49 0.66
9 A' 892 892 10.84 5.79 0.37 0.54
10 A' 502 502 11.42 1.93 0.56 0.72
11 A" 3049 3049 12.43 78.13 0.75 0.86
12 A" 1489 1489 13.75 18.08 0.75 0.86
13 A" 1125 1125 1.03 0.57 0.75 0.86
14 A" 785 785 2.66 8.55 0.75 0.86
15 A" 149 149 0.11 1.39 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12032.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12032.6 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 B97D3/6-31G
ABC
1.86397 0.32881 0.29491

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.465 0.000
C2 -0.962 -0.698 0.000
O3 1.239 0.358 0.000
H4 -0.478 1.471 0.000
H5 -0.420 -1.650 0.000
H6 -1.619 -0.643 0.884
H7 -1.619 -0.643 -0.884

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7
C11.50941.24331.11442.15602.15142.1514
C21.50942.44122.22281.09581.10261.1026
O31.24332.44122.04662.60403.15403.1540
H41.11442.22282.04663.12192.55962.5596
H52.15601.09582.60403.12191.79841.7984
H62.15141.10263.15402.55961.79841.7684
H72.15141.10263.15402.55961.79841.7684

picture of Acetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.697 C1 C2 H6 109.929
C1 C2 H7 109.929 C2 C1 O3 124.670
C2 C1 H4 114.972 O3 C1 H4 120.358
H5 C2 H6 109.785 H5 C2 H7 109.785
H6 C2 H7 106.631
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.219      
2 C -0.492      
3 O -0.368      
4 H 0.112      
5 H 0.181      
6 H 0.174      
7 H 0.174      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.882 -0.285 0.000 2.896
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.022 -0.701 0.000
y -0.701 -17.769 0.000
z 0.000 0.000 -17.689
Traceless
 xyz
x -3.293 -0.701 0.000
y -0.701 1.586 0.000
z 0.000 0.000 1.707
Polar
3z2-r23.414
x2-y2-3.253
xy-0.701
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.611 0.110 0.000
y 0.110 3.599 0.000
z 0.000 0.000 2.488


<r2> (average value of r2) Å2
<r2> 47.757
(<r2>)1/2 6.911