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All results from a given calculation for CH3CHO (Acetaldehyde)

using model chemistry: wB97X-D/LANL2DZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at wB97X-D/LANL2DZ
 hartrees
Energy at 0K-153.755228
Energy at 298.15K-153.759144
HF Energy-153.755228
Nuclear repulsion energy68.897391
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 wB97X-D/LANL2DZ
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' 3212 3212 18.70 44.68 0.73 0.84
2 A' 3069 3069 5.95 174.17 0.01 0.01
3 A' 3010 3010 117.47 104.23 0.38 0.55
4 A' 1755 1755 147.21 6.62 0.32 0.49
5 A' 1503 1503 34.02 18.42 0.68 0.81
6 A' 1447 1447 17.16 9.09 0.59 0.74
7 A' 1434 1434 31.05 5.05 0.73 0.85
8 A' 1161 1161 27.80 6.51 0.48 0.65
9 A' 925 925 5.48 6.60 0.32 0.48
10 A' 506 506 14.21 1.96 0.50 0.67
11 A" 3156 3156 17.32 60.58 0.75 0.86
12 A" 1514 1514 22.57 11.78 0.75 0.86
13 A" 1154 1154 0.33 0.06 0.75 0.86
14 A" 807 807 5.66 5.88 0.75 0.86
15 A" 148 148 1.13 0.75 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12400.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12400.3 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 wB97X-D/LANL2DZ
ABC
1.87306 0.33078 0.29666

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/LANL2DZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.466 0.000
C2 -0.960 -0.699 0.000
O3 1.233 0.358 0.000
H4 -0.471 1.467 0.000
H5 -0.422 -1.648 0.000
H6 -1.608 -0.642 0.882
H7 -1.608 -0.642 -0.882

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7
C11.50921.23791.10632.15562.14252.1425
C21.50922.43452.22051.09111.09641.0964
O31.23792.43452.03282.60093.13853.1385
H41.10632.22052.03283.11562.55312.5531
H52.15561.09112.60093.11561.78851.7885
H62.14251.09643.13852.55311.78851.7650
H72.14251.09643.13852.55311.78851.7650

picture of Acetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.967 C1 C2 H6 109.605
C1 C2 H7 109.605 C2 C1 O3 124.508
C2 C1 H4 115.339 O3 C1 H4 120.153
H5 C2 H6 109.693 H5 C2 H7 109.693
H6 C2 H7 107.201
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.043      
2 C -0.654      
3 O -0.243      
4 H 0.164      
5 H 0.242      
6 H 0.224      
7 H 0.224      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -3.312 -0.188 0.000 3.317
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.477 -0.965 0.000
y -0.965 -17.314 0.000
z 0.000 0.000 -17.707
Traceless
 xyz
x -3.967 -0.965 0.000
y -0.965 2.278 0.000
z 0.000 0.000 1.689
Polar
3z2-r23.378
x2-y2-4.163
xy-0.965
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.407 0.092 0.000
y 0.092 3.219 0.000
z 0.000 0.000 2.483


<r2> (average value of r2) Å2
<r2> 47.535
(<r2>)1/2 6.895