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All results from a given calculation for CH3CHO (Acetaldehyde)

using model chemistry: wB97X-D/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 wB97X-D/aug-cc-pVDZ
 hartrees
Energy at 0K-153.799541
Energy at 298.15K-153.803467
HF Energy-153.799541
Nuclear repulsion energy69.636447
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/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' 3177 3042 9.02 42.48 0.71 0.83
2 A' 3046 2916 2.51 186.58 0.01 0.01
3 A' 2917 2792 112.80 150.57 0.29 0.44
4 A' 1841 1762 199.87 12.08 0.50 0.67
5 A' 1438 1376 22.51 10.18 0.51 0.67
6 A' 1420 1359 11.73 1.90 0.28 0.44
7 A' 1364 1306 24.27 1.88 0.75 0.86
8 A' 1131 1083 22.82 2.90 0.18 0.31
9 A' 901 862 6.53 5.44 0.30 0.46
10 A' 510 488 14.64 1.27 0.31 0.47
11 A" 3121 2988 6.85 57.83 0.75 0.86
12 A" 1448 1386 10.63 3.67 0.75 0.86
13 A" 1131 1083 0.10 1.11 0.75 0.86
14 A" 772 739 1.63 2.72 0.75 0.86
15 A" 160 154 1.39 0.96 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12187.4 cm-1
Scaled (by 0.9573) Zero Point Vibrational Energy (zpe) 11667.0 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 wB97X-D/aug-cc-pVDZ
ABC
1.89246 0.33891 0.30373

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.461 0.000
C2 -0.934 -0.715 0.000
O3 1.205 0.379 0.000
H4 -0.490 1.464 0.000
H5 -0.373 -1.656 0.000
H6 -1.587 -0.659 0.884
H7 -1.587 -0.659 -0.884

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7
C11.50141.20771.11622.14972.13372.1337
C21.50142.40202.22321.09521.10031.1003
O31.20772.40202.01252.57543.10683.1068
H41.11622.22322.01253.12202.54722.5472
H52.14971.09522.57543.12201.80221.8022
H62.13371.10033.10682.54721.80221.7670
H72.13371.10033.10682.54721.80221.7670

picture of Acetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.794 C1 C2 H6 109.227
C1 C2 H7 109.227 C2 C1 O3 124.559
C2 C1 H4 115.497 O3 C1 H4 119.944
H5 C2 H6 110.338 H5 C2 H7 110.338
H6 C2 H7 106.824
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.614      
2 C 0.268      
3 O -0.450      
4 H -0.170      
5 H -0.133      
6 H -0.065      
7 H -0.065      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.934 -0.308 0.000 2.950
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.288 -0.804 0.000
y -0.804 -17.812 0.000
z 0.000 0.000 -17.889
Traceless
 xyz
x -3.437 -0.804 0.000
y -0.804 1.777 0.000
z 0.000 0.000 1.661
Polar
3z2-r23.321
x2-y2-3.476
xy-0.804
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.356 0.193 0.000
y 0.193 4.558 0.000
z 0.000 0.000 3.540


<r2> (average value of r2) Å2
<r2> 46.929
(<r2>)1/2 6.851