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All results from a given calculation for CH3CHO (Acetaldehyde)

using model chemistry: CCSD=FULL/cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCSD=FULL/cc-pVQZ
 hartrees
Energy at 0K-153.695984
Energy at 298.15K 
HF Energy-152.986846
Nuclear repulsion energy70.126162
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 CCSD=FULL/cc-pVQZ
Rotational Constants (cm-1) from geometry optimized at CCSD=FULL/cc-pVQZ
ABC
1.92263 0.34297 0.30744

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.461 0.000
C2 -0.929 -0.711 0.000
O3 1.197 0.377 0.000
H4 -0.485 1.450 0.000
H5 -0.370 -1.639 0.000
H6 -1.573 -0.663 0.875
H7 -1.573 -0.663 -0.875

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7
C11.49551.19981.10162.13212.12242.1224
C21.49552.38832.20631.08321.08791.0879
O31.19982.38831.99472.55343.08603.0860
H41.10162.20631.99473.09102.53272.5327
H52.13211.08322.55343.09101.77961.7796
H62.12241.08793.08602.53271.77961.7499
H72.12241.08793.08602.53271.77961.7499

picture of Acetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.524 C1 C2 H6 109.468
C1 C2 H7 109.468 C2 C1 O3 124.413
C2 C1 H4 115.480 O3 C1 H4 120.107
H5 C2 H6 110.115 H5 C2 H7 110.115
H6 C2 H7 107.085
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability