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All results from a given calculation for CH3CHO (Acetaldehyde)

using model chemistry: B2PLYP/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP/Def2TZVPP
 hartrees
Energy at 0K-153.772273
Energy at 298.15K-153.776198
HF Energy-153.586781
Nuclear repulsion energy69.803182
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 B2PLYP/Def2TZVPP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3170 3170 8.34 45.71 0.70 0.83
2 A' 3052 3052 2.34 167.41 0.01 0.02
3 A' 2916 2916 118.33 153.09 0.31 0.47
4 A' 1789 1789 160.22 8.88 0.59 0.74
5 A' 1473 1473 21.62 11.83 0.60 0.75
6 A' 1434 1434 9.47 6.18 0.38 0.55
7 A' 1391 1391 21.80 2.84 0.75 0.86
8 A' 1140 1140 24.01 2.49 0.20 0.33
9 A' 896 896 8.64 5.99 0.33 0.50
10 A' 510 510 13.30 1.49 0.44 0.61
11 A" 3113 3113 6.54 60.26 0.75 0.86
12 A" 1485 1485 9.65 6.44 0.75 0.86
13 A" 1143 1143 0.10 0.93 0.75 0.86
14 A" 781 781 0.89 4.25 0.75 0.86
15 A" 160 160 1.01 0.94 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12225.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12225.8 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 B2PLYP/Def2TZVPP
ABC
1.91243 0.33956 0.30447

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.461 0.000
C2 -0.934 -0.712 0.000
O3 1.205 0.378 0.000
H4 -0.489 1.454 0.000
H5 -0.379 -1.646 0.000
H6 -1.583 -0.660 0.876
H7 -1.583 -0.660 -0.876

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7
C11.49961.20761.10682.14012.12812.1281
C21.49962.40082.21151.08581.09131.0913
O31.20762.40082.00632.56953.10093.1009
H41.10682.21152.00633.10122.53632.5363
H52.14011.08582.56953.10121.78541.7854
H62.12811.09133.10092.53631.78541.7520
H72.12811.09133.10092.53631.78541.7520

picture of Acetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.720 C1 C2 H6 109.442
C1 C2 H7 109.442 C2 C1 O3 124.596
C2 C1 H4 115.267 O3 C1 H4 120.137
H5 C2 H6 110.185 H5 C2 H7 110.185
H6 C2 H7 106.783
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.144      
2 C -0.190      
3 O -0.277      
4 H 0.044      
5 H 0.101      
6 H 0.089      
7 H 0.089      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.760 -0.291 0.000 2.775
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.250 -0.794 0.011
y -0.794 -18.092 0.004
z 0.011 0.004 -18.025
Traceless
 xyz
x -3.191 -0.794 0.011
y -0.794 1.545 0.004
z 0.011 0.004 1.646
Polar
3z2-r23.292
x2-y2-3.158
xy-0.794
xz0.011
yz0.004


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.048 0.157 -0.002
y 0.157 4.246 -0.000
z -0.002 -0.000 3.243


<r2> (average value of r2) Å2
<r2> 46.872
(<r2>)1/2 6.846