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All results from a given calculation for CH3CHO (Acetaldehyde)

using model chemistry: TPSSh/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-153.896104
Energy at 298.15K-153.900009
HF Energy-153.896104
Nuclear repulsion energy69.680529
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/aug-cc-pVTZ
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' 3137 3028 10.44 44.88 0.68 0.81
2 A' 3018 2913 3.01 195.71 0.01 0.01
3 A' 2869 2769 124.24 173.10 0.30 0.46
4 A' 1788 1726 185.65 12.43 0.50 0.66
5 A' 1469 1417 22.65 9.72 0.54 0.70
6 A' 1421 1371 10.23 3.61 0.36 0.52
7 A' 1380 1332 20.82 2.71 0.71 0.83
8 A' 1130 1090 24.82 2.72 0.18 0.31
9 A' 882 852 9.55 6.21 0.34 0.50
10 A' 497 480 12.72 1.31 0.31 0.48
11 A" 3073 2966 7.69 62.38 0.75 0.86
12 A" 1479 1427 9.17 4.01 0.75 0.86
13 A" 1131 1092 0.01 1.17 0.75 0.86
14 A" 764 738 1.30 3.25 0.75 0.86
15 A" 157 152 1.10 1.13 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12097.1 cm-1
Scaled (by 0.9652) Zero Point Vibrational Energy (zpe) 11676.1 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/aug-cc-pVTZ
ABC
1.90540 0.33842 0.30344

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

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 1.206 0.381 0.000
H4 -0.491 1.457 0.000
H5 -0.380 -1.653 0.000
H6 -1.586 -0.661 0.878
H7 -1.586 -0.661 -0.878

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7
C11.50191.20861.11092.14752.13212.1321
C21.50192.40422.21751.08861.09481.0948
O31.20862.40422.00982.57883.10683.1068
H41.11092.21752.00983.11202.54152.5415
H52.14751.08862.57883.11201.79071.7907
H62.13211.09483.10682.54151.79071.7554
H72.13211.09483.10682.54151.79071.7554

picture of Acetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.980 C1 C2 H6 109.384
C1 C2 H7 109.384 C2 C1 O3 124.640
C2 C1 H4 115.320 O3 C1 H4 120.041
H5 C2 H6 110.202 H5 C2 H7 110.202
H6 C2 H7 106.583
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.142      
2 C -0.217      
3 O -0.573      
4 H 0.264      
5 H 0.132      
6 H 0.126      
7 H 0.126      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.806 -0.327 0.000 2.825
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 5.478 0.235 0.000
y 0.235 4.725 0.000
z 0.000 0.000 3.579


<r2> (average value of r2) Å2
<r2> 46.934
(<r2>)1/2 6.851