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All results from a given calculation for CH3CHO (Acetaldehyde)

using model chemistry: B1B95/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 B1B95/daug-cc-pVDZ
 hartrees
Energy at 0K-153.781675
Energy at 298.15K-153.785595
HF Energy-153.781675
Nuclear repulsion energy69.822683
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 B1B95/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' 3189 3189 8.08 43.49 0.71 0.83
2 A' 3056 3056 1.87 193.53 0.01 0.01
3 A' 2919 2919 116.54 165.55 0.29 0.45
4 A' 1839 1839 198.31 12.47 0.49 0.66
5 A' 1432 1432 21.53 11.32 0.49 0.66
6 A' 1414 1414 11.97 1.66 0.37 0.54
7 A' 1350 1350 26.79 2.17 0.75 0.86
8 A' 1128 1128 22.84 3.28 0.19 0.33
9 A' 900 900 5.67 5.30 0.32 0.49
10 A' 503 503 13.85 1.25 0.29 0.45
11 A" 3131 3131 5.44 60.31 0.75 0.86
12 A" 1441 1441 10.41 3.92 0.75 0.86
13 A" 1124 1124 0.10 1.28 0.75 0.86
14 A" 763 763 1.57 3.07 0.75 0.86
15 A" 162 162 1.12 1.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12174.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12174.7 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 B1B95/daug-cc-pVDZ
ABC
1.90353 0.34091 0.30549

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/daug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.459 0.000
C2 -0.932 -0.710 0.000
O3 1.203 0.375 0.000
H4 -0.488 1.461 0.000
H5 -0.376 -1.650 0.000
H6 -1.585 -0.653 0.880
H7 -1.585 -0.653 -0.880

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7
C11.49491.20601.11402.14172.12682.1268
C21.49492.39482.21551.09181.09751.0975
O31.20602.39482.00902.56753.09923.0992
H41.11402.21552.00903.11212.53882.5388
H52.14171.09182.56753.11211.79741.7974
H62.12681.09753.09922.53881.79741.7600
H72.12681.09753.09922.53881.79741.7600

picture of Acetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.818 C1 C2 H6 109.290
C1 C2 H7 109.290 C2 C1 O3 124.579
C2 C1 H4 115.483 O3 C1 H4 119.938
H5 C2 H6 110.365 H5 C2 H7 110.365
H6 C2 H7 106.614
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.611      
2 C 1.151      
3 O -0.572      
4 H -0.553      
5 H -0.332      
6 H -0.152      
7 H -0.152      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.858 -0.320 0.000 2.876
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.191 -0.757 0.000
y -0.757 -17.899 0.000
z 0.000 0.000 -17.913
Traceless
 xyz
x -3.285 -0.757 0.000
y -0.757 1.653 0.000
z 0.000 0.000 1.632
Polar
3z2-r23.264
x2-y2-3.292
xy-0.757
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.390 0.207 0.000
y 0.207 4.657 0.000
z 0.000 0.000 3.569


<r2> (average value of r2) Å2
<r2> 46.730
(<r2>)1/2 6.836