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All results from a given calculation for CH3CHO (Acetaldehyde)

using model chemistry: PBEPBEultrafine/daug-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 PBEPBEultrafine/daug-cc-pVDZ
 hartrees
Energy at 0K-153.665006
Energy at 298.15K-153.668861
HF Energy-153.665006
Nuclear repulsion energy69.108054
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 PBEPBEultrafine/daug-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' 3093 3093 8.35 46.71 0.71 0.83
2 A' 2960 2960 1.77 212.91 0.01 0.01
3 A' 2785 2785 138.92 201.09 0.29 0.46
4 A' 1745 1745 183.44 13.51 0.52 0.68
5 A' 1379 1379 20.73 12.65 0.49 0.65
6 A' 1360 1360 9.78 1.71 0.53 0.69
7 A' 1295 1295 33.17 3.35 0.73 0.84
8 A' 1086 1086 22.58 3.49 0.22 0.37
9 A' 866 866 7.61 5.81 0.45 0.62
10 A' 489 489 11.25 1.33 0.28 0.44
11 A" 3030 3030 4.49 65.69 0.75 0.86
12 A" 1387 1387 10.78 4.20 0.75 0.86
13 A" 1074 1074 0.03 1.84 0.75 0.86
14 A" 731 731 1.71 4.14 0.75 0.86
15 A" 156 156 0.62 1.45 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11717.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11717.7 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 PBEPBEultrafine/daug-cc-pVDZ
ABC
1.87173 0.33395 0.29932

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.460 0.000
C2 -0.942 -0.714 0.000
O3 1.218 0.377 0.000
H4 -0.498 1.472 0.000
H5 -0.389 -1.668 0.000
H6 -1.605 -0.651 0.886
H7 -1.605 -0.651 -0.886

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7
C11.50511.22101.12812.16342.14352.1435
C21.50512.41972.23091.10231.10861.1086
O31.22102.41972.03602.60113.13223.1322
H41.12812.23092.03603.14222.55302.5530
H52.16341.10232.60113.14221.81581.8158
H62.14351.10863.13222.55301.81581.7723
H72.14351.10863.13222.55301.81581.7723

picture of Acetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 111.197 C1 C2 H6 109.253
C1 C2 H7 109.253 C2 C1 O3 124.826
C2 C1 H4 115.070 O3 C1 H4 120.104
H5 C2 H6 110.429 H5 C2 H7 110.429
H6 C2 H7 106.141
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.613      
2 C 1.075      
3 O -0.546      
4 H -0.537      
5 H -0.332      
6 H -0.137      
7 H -0.137      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.772 -0.366 0.000 2.796
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.378 -0.657 0.000
y -0.657 -18.279 0.000
z 0.000 0.000 -18.175
Traceless
 xyz
x -3.151 -0.657 0.000
y -0.657 1.498 0.000
z 0.000 0.000 1.653
Polar
3z2-r23.306
x2-y2-3.099
xy-0.657
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.870 0.239 0.000
y 0.239 5.097 0.000
z 0.000 0.000 3.780


<r2> (average value of r2) Å2
<r2> 47.616
(<r2>)1/2 6.900