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 CH2CCH2 (allene)

using model chemistry: QCISD/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at QCISD/daug-cc-pVTZ
 hartrees
Energy at 0K-116.417966
Energy at 298.15K 
HF Energy-115.906721
Nuclear repulsion energy59.166527
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/daug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at QCISD/daug-cc-pVTZ
ABC
4.85147 0.29641 0.29641

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

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.000 0.000 1.309
C3 0.000 0.000 -1.309
H4 0.000 0.928 1.865
H5 0.000 -0.928 1.865
H6 0.928 0.000 -1.865
H7 -0.928 0.000 -1.865

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.30891.30892.08302.08302.08302.0830
C21.30892.61781.08201.08203.30663.3066
C31.30892.61783.30663.30661.08201.0820
H42.08301.08203.30661.85683.95373.9537
H52.08301.08203.30661.85683.95373.9537
H62.08303.30661.08203.95373.95371.8568
H72.08303.30661.08203.95373.95371.8568

picture of allene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 120.905 C1 C2 H5 120.905
C1 C3 H6 120.905 C1 C3 H7 120.905
C2 C1 C3 180.000 H4 C2 H5 118.190
H6 C3 H7 118.190
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability