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 CHCl2CCH (3,3-dichloropropyne)

using model chemistry: CCSD(T)/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 CCSD(T)/cc-pVTZ
 hartrees
Energy at 0K-1034.686887
Energy at 298.15K 
HF Energy-1033.760386
Nuclear repulsion energy239.902216
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)/cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at CCSD(T)/cc-pVTZ
ABC
0.10619 0.09895 0.05348

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.675 1.982 0.000
C2 -0.745 1.207 0.000
C3 0.392 0.300 0.000
Cl4 0.392 -0.719 1.473
Cl5 0.392 -0.719 -1.473
H6 -2.497 2.656 0.000
H7 1.331 0.843 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 Cl4 Cl5 H6 H7
C11.20992.66483.70603.70601.06343.2144
C21.20991.45502.67812.67812.27332.1082
C32.66481.45501.79101.79103.72821.0849
Cl43.70602.67811.79102.94644.68042.3433
Cl53.70602.67811.79102.94644.68042.3433
H61.06342.27333.72824.68044.68044.2357
H73.21442.10821.08492.34332.34334.2357

picture of 3,3-dichloropropyne state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 178.764 C2 C1 H6 179.569
C2 C3 Cl4 110.766 C2 C3 Cl5 110.766
C2 C3 H7 111.375 Cl4 C3 Cl5 110.690
Cl4 C3 H7 106.545 Cl5 C3 H7 106.545
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability