return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH2CHO (Vinyloxy radical)

using model chemistry: QCISD/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A"
Energy calculated at QCISD/6-31G(2df,p)
 hartrees
Energy at 0K-152.833603
Energy at 298.15K 
HF Energy-152.315383
Nuclear repulsion energy63.553236
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/6-31G(2df,p)
Rotational Constants (cm-1) from geometry optimized at QCISD/6-31G(2df,p)
See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.431 0.000
H2 0.309 1.490 0.000
C3 1.054 -0.543 0.000
O4 -1.191 0.128 0.000
H5 2.094 -0.244 0.000
H6 0.798 -1.595 0.000

Atom - Atom Distances (Å)
  C1 H2 C3 O4 H5 H6
C11.10321.43481.22842.20012.1768
H21.10322.16482.02572.48813.1228
C31.43482.16482.34271.08251.0826
O41.22842.02572.34273.30582.6308
H52.20012.48811.08253.30581.8726
H62.17683.12281.08262.63081.8726

picture of Vinyloxy radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 H5 121.217 C1 C3 H6 119.033
H2 C1 C3 116.455 H2 C1 O4 120.536
C3 C1 O4 123.009 H5 C3 H6 119.749
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability