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All results from a given calculation for CH3CHO (Acetaldehyde)

using model chemistry: B2PLYP=FULLultrafine/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 B2PLYP=FULLultrafine/daug-cc-pVDZ
 hartrees
Energy at 0K-153.705727
Energy at 298.15K 
HF Energy-153.542715
Nuclear repulsion energy69.383318
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=FULLultrafine/daug-cc-pVDZ
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' 3171 3171 9.14 42.50 0.72 0.84
2 A' 3046 3046 2.84 195.42 0.01 0.01
3 A' 2925 2925 115.97 170.97 0.29 0.44
4 A' 1773 1773 169.10 11.54 0.47 0.64
5 A' 1446 1446 22.60 10.42 0.53 0.69
6 A' 1415 1415 8.87 4.04 0.28 0.44
7 A' 1365 1365 21.24 1.91 0.75 0.86
8 A' 1130 1130 22.07 3.35 0.17 0.29
9 A' 895 895 6.57 6.19 0.32 0.48
10 A' 505 505 13.24 1.49 0.28 0.44
11 A" 3117 3117 7.28 60.16 0.75 0.86
12 A" 1457 1457 9.71 4.00 0.75 0.86
13 A" 1126 1126 0.01 1.15 0.75 0.86
14 A" 770 770 1.20 3.20 0.75 0.86
15 A" 161 161 1.36 1.04 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12149.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12149.9 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 B2PLYP=FULLultrafine/daug-cc-pVDZ
ABC
1.88503 0.33614 0.30131

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/daug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.462 0.000
C2 -0.941 -0.712 0.000
O3 1.213 0.375 0.000
H4 -0.485 1.466 0.000
H5 -0.385 -1.655 0.000
H6 -1.594 -0.654 0.883
H7 -1.594 -0.654 -0.883

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7
C11.50501.21641.11482.15262.13742.1374
C21.50502.41292.22541.09501.10011.1001
O31.21642.41292.01882.58383.11773.1177
H41.11482.22542.01883.12312.55072.5507
H52.15261.09502.58383.12311.80121.8012
H62.13741.10013.11772.55071.80121.7669
H72.13741.10013.11772.55071.80121.7669

picture of Acetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.784 C1 C2 H6 109.277
C1 C2 H7 109.277 C2 C1 O3 124.570
C2 C1 H4 115.498 O3 C1 H4 119.932
H5 C2 H6 110.282 H5 C2 H7 110.282
H6 C2 H7 106.850
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability