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All results from a given calculation for CH3CHO (Acetaldehyde)

using model chemistry: HSEh1PBE/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 HSEh1PBE/aug-cc-pVTZ
 hartrees
Energy at 0K-153.724054
Energy at 298.15K-153.727978
HF Energy-153.724054
Nuclear repulsion energy69.995347
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 HSEh1PBE/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' 3164 3043 7.00 42.69 0.70 0.82
2 A' 3042 2926 1.57 191.76 0.01 0.01
3 A' 2890 2779 115.35 164.91 0.28 0.44
4 A' 1839 1769 199.00 12.72 0.50 0.67
5 A' 1452 1396 23.19 9.55 0.52 0.68
6 A' 1421 1367 10.60 2.78 0.33 0.49
7 A' 1370 1318 29.45 2.27 0.73 0.85
8 A' 1134 1090 24.69 2.68 0.18 0.31
9 A' 897 863 7.67 5.28 0.33 0.50
10 A' 509 490 13.47 1.27 0.30 0.46
11 A" 3105 2986 4.16 58.69 0.75 0.86
12 A" 1461 1405 11.03 3.69 0.75 0.86
13 A" 1136 1092 0.18 1.23 0.75 0.86
14 A" 770 741 1.66 2.91 0.75 0.86
15 A" 159 153 1.09 1.02 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12173.6 cm-1
Scaled (by 0.9618) Zero Point Vibrational Energy (zpe) 11708.5 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 HSEh1PBE/aug-cc-pVTZ
ABC
1.92053 0.34178 0.30647

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.458 0.000
C2 -0.927 -0.714 0.000
O3 1.199 0.382 0.000
H4 -0.496 1.452 0.000
H5 -0.373 -1.650 0.000
H6 -1.579 -0.661 0.876
H7 -1.579 -0.661 -0.876

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7
C11.49371.20101.11122.14052.12422.1242
C21.49372.39152.20811.08801.09361.0936
O31.20102.39152.00412.56923.09393.0939
H41.11122.20812.00413.10442.53052.5305
H52.14051.08802.56923.10441.78941.7894
H62.12421.09363.09392.53051.78941.7522
H72.12421.09363.09392.53051.78941.7522

picture of Acetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 111.035 C1 C2 H6 109.397
C1 C2 H7 109.397 C2 C1 O3 124.761
C2 C1 H4 115.127 O3 C1 H4 120.112
H5 C2 H6 110.213 H5 C2 H7 110.213
H6 C2 H7 106.475
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.032      
2 C -0.538      
3 O -0.539      
4 H 0.359      
5 H 0.241      
6 H 0.223      
7 H 0.223      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.852 -0.340 0.000 2.872
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.154 -0.765 0.000
y -0.765 -17.888 0.000
z 0.000 0.000 -17.914
Traceless
 xyz
x -3.253 -0.765 0.000
y -0.765 1.646 0.000
z 0.000 0.000 1.607
Polar
3z2-r23.214
x2-y2-3.266
xy-0.765
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.364 0.214 0.000
y 0.214 4.631 0.000
z 0.000 0.000 3.545


<r2> (average value of r2) Å2
<r2> 46.602
(<r2>)1/2 6.827