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All results from a given calculation for CH3CHO (Acetaldehyde)

using model chemistry: QCISD(T)=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 QCISD(T)=FULL/daug-cc-pVTZ
 hartrees
Energy at 0K-153.655423
Energy at 298.15K 
HF Energy-152.977120
Nuclear repulsion energy69.790256
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 QCISD(T)=FULL/daug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at QCISD(T)=FULL/daug-cc-pVTZ
ABC
1.90591 0.33990 0.30468

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.230 0.400 0.000
C2 -1.165 -0.149 0.000
O3 1.232 -0.277 -0.000
H4 0.304 1.503 0.000
H5 -1.147 -1.236 0.000
H6 -1.698 0.220 0.878
H7 -1.698 0.219 -0.879

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7
C11.49911.20921.10522.13832.12622.1262
C21.49912.40012.21131.08681.09171.0917
O31.20922.40012.00662.56473.09863.0984
H41.10522.21132.00663.09982.53552.5358
H52.13831.08682.56473.09981.78711.7871
H62.12621.09173.09862.53551.78711.7571
H72.12621.09173.09842.53581.78711.7571

picture of Acetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.549 C1 C2 H6 109.290
C1 C2 H7 109.290 C2 C1 O3 124.449
C2 C1 H4 115.392 O3 C1 H4 120.159
H5 C2 H6 110.236 H5 C2 H7 110.236
H6 C2 H7 107.170
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability