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All results from a given calculation for CH3CHO (Acetaldehyde)

using model chemistry: B3LYPultrafine/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 B3LYPultrafine/aug-cc-pVDZ
 hartrees
Energy at 0K-153.853210
Energy at 298.15K-153.857123
HF Energy-153.853210
Nuclear repulsion energy69.465521
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 B3LYPultrafine/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' 3147 3054 9.34 45.22 0.70 0.82
2 A' 3024 2935 2.48 193.77 0.01 0.01
3 A' 2885 2800 119.24 169.54 0.30 0.46
4 A' 1798 1744 193.45 12.60 0.55 0.71
5 A' 1429 1387 22.25 10.93 0.53 0.69
6 A' 1409 1367 9.34 2.50 0.33 0.50
7 A' 1354 1314 25.33 2.46 0.75 0.85
8 A' 1121 1088 23.50 2.89 0.18 0.30
9 A' 889 863 7.62 5.97 0.34 0.51
10 A' 505 490 13.71 1.30 0.32 0.48
11 A" 3086 2994 6.75 62.49 0.75 0.86
12 A" 1439 1396 9.87 4.08 0.75 0.86
13 A" 1120 1086 0.05 1.40 0.75 0.86
14 A" 764 742 1.30 3.25 0.75 0.86
15 A" 162 157 1.24 1.18 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12064.8 cm-1
Scaled (by 0.9704) Zero Point Vibrational Energy (zpe) 11707.6 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 B3LYPultrafine/aug-cc-pVDZ
ABC
1.88900 0.33690 0.30202

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.461 0.000
C2 -0.936 -0.716 0.000
O3 1.209 0.380 0.000
H4 -0.492 1.465 0.000
H5 -0.378 -1.659 0.000
H6 -1.592 -0.661 0.883
H7 -1.592 -0.661 -0.883

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7
C11.50421.21181.11782.15402.13872.1387
C21.50422.40922.22581.09601.10151.1015
O31.21182.40922.01752.58423.11613.1161
H41.11782.22582.01753.12632.55142.5514
H52.15401.09602.58423.12631.80311.8031
H62.13871.10153.11612.55141.80311.7666
H72.13871.10153.11612.55141.80311.7666

picture of Acetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.888 C1 C2 H6 109.348
C1 C2 H7 109.348 C2 C1 O3 124.656
C2 C1 H4 115.396 O3 C1 H4 119.948
H5 C2 H6 110.270 H5 C2 H7 110.270
H6 C2 H7 106.617
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.739      
2 C 0.603      
3 O -0.446      
4 H -0.290      
5 H -0.244      
6 H -0.181      
7 H -0.181      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.889 -0.323 0.000 2.907
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.558 -0.778 0.000
y -0.778 -18.137 0.000
z 0.000 0.000 -18.098
Traceless
 xyz
x -3.441 -0.778 0.000
y -0.778 1.691 0.000
z 0.000 0.000 1.750
Polar
3z2-r23.499
x2-y2-3.421
xy-0.778
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.517 0.213 0.000
y 0.213 4.710 0.000
z 0.000 0.000 3.582


<r2> (average value of r2) Å2
<r2> 47.283
(<r2>)1/2 6.876