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All results from a given calculation for CH3CHO (Acetaldehyde)

using model chemistry: MP3=FULL/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=FULL/daug-cc-pVTZ
 hartrees
Energy at 0K-153.624162
Energy at 298.15K 
HF Energy-152.978133
Nuclear repulsion energy70.193144
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=FULL/daug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at MP3=FULL/daug-cc-pVTZ
ABC
1.92598 0.34350 0.30797

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.233 0.397 0.000
C2 -1.160 -0.147 0.000
O3 1.223 -0.276 0.000
H4 0.312 1.495 0.000
H5 -1.146 -1.230 0.000
H6 -1.691 0.222 0.876
H7 -1.691 0.222 -0.876

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7
C11.49561.19681.10092.13312.12112.1211
C21.49562.38632.20511.08351.08831.0883
O31.19682.38631.99152.55393.08293.0828
H41.10092.20511.99153.09082.52942.5294
H52.13311.08352.55393.09081.78121.7812
H62.12111.08833.08292.52941.78121.7511
H72.12111.08833.08282.52941.78121.7511

picture of Acetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.584 C1 C2 H6 109.333
C1 C2 H7 109.333 C2 C1 O3 124.461
C2 C1 H4 115.426 O3 C1 H4 120.113
H5 C2 H6 110.197 H5 C2 H7 110.197
H6 C2 H7 107.125
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability