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All results from a given calculation for CH3CCH (propyne)

using model chemistry: CID/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A'
Energy calculated at CID/daug-cc-pVTZ
 hartrees
Energy at 0K-116.358514
Energy at 298.15K 
HF Energy-115.910358
Nuclear repulsion energy59.052537
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 CID/daug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at CID/daug-cc-pVTZ
ABC
5.41444 0.28826 0.28826

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.238
C2 0.000 0.000 0.221
C3 0.000 0.000 1.415
H4 0.000 0.000 2.471
H5 0.000 1.015 -1.619
H6 0.879 -0.507 -1.619
H7 -0.879 -0.507 -1.619

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.45892.65253.70921.08381.08381.0838
C21.45891.19362.25022.10092.10092.1009
C32.65251.19361.05663.19843.19843.1984
H43.70922.25021.05664.21394.21394.2139
H51.08382.10093.19844.21391.75761.7576
H61.08382.10093.19844.21391.75761.7576
H71.08382.10093.19844.21391.75761.7576

picture of propyne state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 180.000 C2 C1 H5 110.563
C2 C1 H6 110.563 C2 C1 H7 110.563
C2 C3 H4 180.000 H5 C1 H6 108.358
H5 C1 H7 108.358 H6 C1 H7 108.358
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability