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All results from a given calculation for CH3CHO (Acetaldehyde)

using model chemistry: MP3/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP3/daug-cc-pVTZ
 hartrees
Energy at 0K-153.569347
Energy at 298.15K 
HF Energy-152.977768
Nuclear repulsion energy69.954863
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 MP3/daug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at MP3/daug-cc-pVTZ
ABC
1.91121 0.34130 0.30588

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/daug-cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.234 0.399 0.000
C2 -1.164 -0.147 0.000
O3 1.226 -0.278 0.000
H4 0.317 1.500 0.000
H5 -1.149 -1.233 -0.000
H6 -1.697 0.222 0.877
H7 -1.697 0.222 -0.877

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7
C11.50101.20171.10332.13912.12852.1285
C21.50102.39412.21491.08581.09091.0909
O31.20172.39411.99672.55983.09323.0932
H41.10332.21491.99673.10072.54162.5416
H52.13911.08582.55983.10071.78521.7852
H62.12851.09093.09322.54161.78521.7544
H72.12851.09093.09322.54161.78521.7544

picture of Acetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.537 C1 C2 H6 109.390
C1 C2 H7 109.390 C2 C1 O3 124.329
C2 C1 H4 115.682 O3 C1 H4 119.989
H5 C2 H6 110.202 H5 C2 H7 110.202
H6 C2 H7 107.050
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability