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All results from a given calculation for CH3CCH (propyne)

using model chemistry: CCSD(T)=FULL/aug-cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A'
Energy calculated at CCSD(T)=FULL/aug-cc-pVQZ
 hartrees
Energy at 0K-116.562141
Energy at 298.15K 
HF Energy-115.915884
Nuclear repulsion energy58.796145
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(T)=FULL/aug-cc-pVQZ
Rotational Constants (cm-1) from geometry optimized at CCSD(T)=FULL/aug-cc-pVQZ
ABC
5.37517 0.28608 0.28608

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.241
C2 0.000 0.000 0.217
C3 0.000 0.000 1.422
H4 0.000 0.000 2.483
H5 0.000 1.018 -1.623
H6 0.882 -0.509 -1.623
H7 -0.882 -0.509 -1.623

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.45782.66323.72401.08791.08791.0879
C21.45781.20542.26622.10322.10322.1032
C32.66321.20541.06073.21143.21143.2114
H43.72402.26621.06074.23084.23084.2308
H51.08792.10323.21144.23081.76401.7640
H61.08792.10323.21144.23081.76401.7640
H71.08792.10323.21144.23081.76401.7640

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 110.578
C2 C1 H6 110.578 C2 C1 H7 110.578
C2 C3 H4 180.000 H5 C1 H6 108.342
H5 C1 H7 108.342 H6 C1 H7 108.342
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability