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All results from a given calculation for CH3CHO (Acetaldehyde)

using model chemistry: TPSSh/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 TPSSh/daug-cc-pVDZ
 hartrees
Energy at 0K-153.858859
Energy at 298.15K-153.862762
HF Energy-153.858859
Nuclear repulsion energy69.387937
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 TPSSh/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' 3146 3146 13.38 46.05 0.69 0.82
2 A' 3018 3018 4.03 201.69 0.01 0.01
3 A' 2876 2876 131.96 177.88 0.30 0.47
4 A' 1784 1784 186.65 12.26 0.49 0.66
5 A' 1447 1447 21.68 10.73 0.53 0.70
6 A' 1411 1411 9.59 3.32 0.36 0.53
7 A' 1360 1360 19.79 2.74 0.73 0.84
8 A' 1124 1124 23.33 3.28 0.19 0.32
9 A' 887 887 7.63 6.18 0.34 0.51
10 A' 494 494 12.84 1.29 0.30 0.46
11 A" 3082 3082 10.47 64.62 0.75 0.86
12 A" 1458 1458 8.70 4.28 0.75 0.86
13 A" 1120 1120 0.00 1.27 0.75 0.86
14 A" 759 759 1.20 3.55 0.75 0.86
15 A" 159 159 1.09 1.14 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12061.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12061.9 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 TPSSh/daug-cc-pVDZ
ABC
1.88418 0.33628 0.30140

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.462 0.000
C2 -0.939 -0.714 0.000
O3 1.212 0.377 0.000
H4 -0.490 1.466 0.000
H5 -0.384 -1.658 0.000
H6 -1.594 -0.655 0.883
H7 -1.594 -0.655 -0.883

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7
C11.50501.21521.11702.15442.13802.1380
C21.50502.41202.22581.09511.10141.1014
O31.21522.41202.02072.58583.11803.1180
H41.11702.22582.02073.12562.54952.5495
H52.15441.09512.58583.12561.80311.8031
H62.13801.10143.11802.54951.80311.7667
H72.13801.10143.11802.54951.80311.7667

picture of Acetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.920 C1 C2 H6 109.240
C1 C2 H7 109.240 C2 C1 O3 124.577
C2 C1 H4 115.383 O3 C1 H4 120.040
H5 C2 H6 110.347 H5 C2 H7 110.347
H6 C2 H7 106.641
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.578      
2 C 0.843      
3 O -0.607      
4 H -0.430      
5 H -0.244      
6 H -0.070      
7 H -0.070      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.819 -0.318 0.000 2.837
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.559 0.226 0.000
y 0.226 4.796 0.000
z 0.000 0.000 3.631


<r2> (average value of r2) Å2
<r2> 47.227
(<r2>)1/2 6.872