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All results from a given calculation for CH3CHO (Acetaldehyde)

using model chemistry: B2PLYP=FULLultrafine/TZVP

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/TZVP
 hartrees
Energy at 0K-153.754480
Energy at 298.15K 
HF Energy-153.577967
Nuclear repulsion energy69.727752
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/TZVP
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' 3175 3175 9.47 48.40 0.71 0.83
2 A' 3056 3056 2.51 163.79 0.01 0.02
3 A' 2923 2923 124.71 156.56 0.32 0.49
4 A' 1788 1788 160.35 8.69 0.58 0.73
5 A' 1481 1481 22.02 14.24 0.63 0.77
6 A' 1447 1447 8.90 6.57 0.47 0.64
7 A' 1401 1401 23.77 3.63 0.75 0.86
8 A' 1144 1144 24.42 2.85 0.31 0.47
9 A' 896 896 8.80 5.95 0.37 0.54
10 A' 516 516 12.82 1.69 0.46 0.63
11 A" 3119 3119 8.02 62.79 0.75 0.86
12 A" 1487 1487 11.80 8.63 0.75 0.86
13 A" 1148 1148 0.16 0.99 0.75 0.86
14 A" 787 787 0.50 6.37 0.75 0.86
15 A" 154 154 0.88 1.09 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12260.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12260.6 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/TZVP
ABC
1.91033 0.33868 0.30378

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.461 0.000
C2 -0.936 -0.712 0.000
O3 1.207 0.378 0.000
H4 -0.488 1.455 0.000
H5 -0.380 -1.647 0.000
H6 -1.584 -0.661 0.878
H7 -1.584 -0.661 -0.878

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7
C11.50071.20941.10732.14142.13012.1301
C21.50072.40402.21271.08691.09211.0921
O31.20942.40402.00782.57253.10433.1043
H41.10732.21272.00783.10312.53902.5390
H52.14141.08692.57253.10311.78611.7861
H62.13011.09213.10432.53901.78611.7552
H72.13011.09213.10432.53901.78611.7552

picture of Acetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.681 C1 C2 H6 109.469
C1 C2 H7 109.469 C2 C1 O3 124.661
C2 C1 H4 115.252 O3 C1 H4 120.087
H5 C2 H6 110.100 H5 C2 H7 110.100
H6 C2 H7 106.945
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability