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All results from a given calculation for CH3CHO (Acetaldehyde)

using model chemistry: B2PLYP=FULL/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=FULL/cc-pVDZ
 hartrees
Energy at 0K-153.684101
Energy at 298.15K-153.688037
HF Energy-153.529642
Nuclear repulsion energy69.400779
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=FULL/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' 3186 3054 7.78 55.55 0.73 0.84
2 A' 3058 2931 2.58 144.01 0.01 0.02
3 A' 2902 2781 144.81 161.24 0.32 0.49
4 A' 1814 1739 150.20 7.09 0.71 0.83
5 A' 1449 1389 18.38 19.90 0.66 0.80
6 A' 1423 1364 12.00 7.30 0.55 0.71
7 A' 1371 1314 17.97 4.59 0.75 0.86
8 A' 1132 1085 23.23 2.62 0.26 0.42
9 A' 899 862 6.50 6.05 0.41 0.58
10 A' 504 483 13.10 1.46 0.49 0.66
11 A" 3133 3003 7.11 73.25 0.75 0.86
12 A" 1463 1402 9.55 12.17 0.75 0.86
13 A" 1131 1084 0.70 1.61 0.75 0.86
14 A" 778 745 0.55 5.58 0.75 0.86
15 A" 171 164 0.26 1.12 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12206.3 cm-1
Scaled (by 0.9585) Zero Point Vibrational Energy (zpe) 11699.7 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 B2PLYP=FULL/cc-pVDZ
ABC
1.88583 0.33618 0.30143

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.462 0.000
C2 -0.936 -0.718 0.000
O3 1.210 0.384 0.000
H4 -0.509 1.461 0.000
H5 -0.368 -1.657 0.000
H6 -1.591 -0.670 0.885
H7 -1.591 -0.670 -0.885

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7
C11.50641.21211.12082.15132.14422.1442
C21.50642.41192.22051.09751.10231.1023
O31.21212.41192.02792.57983.12073.1207
H41.12082.22052.02793.12142.54892.5489
H52.15131.09752.57983.12141.80371.8037
H62.14421.10233.12072.54891.80371.7700
H72.14421.10233.12072.54891.80371.7700

picture of Acetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.435 C1 C2 H6 109.594
C1 C2 H7 109.594 C2 C1 O3 124.705
C2 C1 H4 114.597 O3 C1 H4 120.699
H5 C2 H6 110.165 H5 C2 H7 110.165
H6 C2 H7 106.818
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability