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All results from a given calculation for CH3CHO (Acetaldehyde)

using model chemistry: wB97X-D/STO-3G

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/STO-3G
 hartrees
Energy at 0K-151.795935
Energy at 298.15K-151.799719
HF Energy-151.795935
Nuclear repulsion energy67.920689
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/STO-3G
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' 3534 3534 0.36 24.81 0.75 0.86
2 A' 3340 3340 1.13 43.65 0.01 0.02
3 A' 3228 3228 34.89 44.79 0.35 0.52
4 A' 1899 1899 29.81 2.61 0.05 0.10
5 A' 1671 1671 7.96 18.17 0.73 0.85
6 A' 1552 1552 9.34 6.31 0.73 0.84
7 A' 1498 1498 9.21 9.75 0.74 0.85
8 A' 1185 1185 25.09 5.20 0.58 0.73
9 A' 961 961 5.76 4.75 0.32 0.48
10 A' 505 505 5.73 1.25 0.58 0.74
11 A" 3504 3504 0.10 32.19 0.75 0.86
12 A" 1671 1671 6.03 14.12 0.75 0.86
13 A" 1162 1162 1.18 0.12 0.75 0.86
14 A" 810 810 3.83 2.96 0.75 0.86
15 A" 147 147 0.32 0.48 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13333.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13333.2 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/STO-3G
ABC
1.83289 0.31867 0.28619

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.477 0.000
C2 -0.964 -0.738 0.000
O3 1.243 0.397 0.000
H4 -0.534 1.467 0.000
H5 -0.402 -1.681 0.000
H6 -1.610 -0.698 0.890
H7 -1.610 -0.698 -0.890

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7
C11.55181.24551.12462.19582.18332.1833
C21.55182.48232.24681.09791.10041.1004
O31.24552.48232.07432.65083.18313.1831
H41.12462.24682.07433.15102.57652.5765
H52.19581.09792.65083.15101.79381.7938
H62.18331.10043.18312.57651.79381.7804
H72.18331.10043.18312.57651.79381.7804

picture of Acetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.770 C1 C2 H6 109.645
C1 C2 H7 109.645 C2 C1 O3 124.734
C2 C1 H4 113.213 O3 C1 H4 122.053
H5 C2 H6 109.370 H5 C2 H7 109.370
H6 C2 H7 107.993
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.098      
2 C -0.246      
3 O -0.175      
4 H 0.059      
5 H 0.089      
6 H 0.088      
7 H 0.088      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.655 -0.127 0.000 1.660
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.579 -0.578 0.000
y -0.578 -16.527 0.000
z 0.000 0.000 -16.376
Traceless
 xyz
x -2.128 -0.578 0.000
y -0.578 0.951 0.000
z 0.000 0.000 1.177
Polar
3z2-r22.354
x2-y2-2.052
xy-0.578
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.488 0.088 0.000
y 0.088 1.768 0.000
z 0.000 0.000 1.171


<r2> (average value of r2) Å2
<r2> 47.728
(<r2>)1/2 6.909