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All results from a given calculation for CH3CCH (propyne)

using model chemistry: wB97X-D/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 wB97X-D/aug-cc-pVQZ
 hartrees
Energy at 0K-116.662266
Energy at 298.15K 
HF Energy-116.662266
Nuclear repulsion energy58.981536
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 wB97X-D/aug-cc-pVQZ
Rotational Constants (cm-1) from geometry optimized at wB97X-D/aug-cc-pVQZ
ABC
5.36743 0.28820 0.28820

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/aug-cc-pVQZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.236
C2 0.000 0.000 0.219
C3 0.000 0.000 1.415
H4 0.000 0.000 2.477
H5 0.000 1.019 -1.621
H6 0.883 -0.510 -1.621
H7 -0.883 -0.510 -1.621

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.45542.65113.71301.08941.08941.0894
C21.45541.19572.25762.10342.10342.1034
C32.65111.19571.06193.20223.20223.2022
H43.71302.25761.06194.22254.22254.2225
H51.08942.10343.20224.22251.76531.7653
H61.08942.10343.20224.22251.76531.7653
H71.08942.10343.20224.22251.76531.7653

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 110.677
C2 C1 H6 110.677 C2 C1 H7 110.677
C2 C3 H4 180.000 H5 C1 H6 108.239
H5 C1 H7 108.239 H6 C1 H7 108.239
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/aug-cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.110      
2 C -0.275      
3 C -0.271      
4 H 0.231      
5 H 0.068      
6 H 0.068      
7 H 0.068      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -0.834 0.834
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.580 0.000 0.000
y 0.000 -19.580 0.000
z 0.000 0.000 -13.915
Traceless
 xyz
x -2.832 0.000 0.000
y 0.000 -2.832 0.000
z 0.000 0.000 5.664
Polar
3z2-r211.329
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 49.650
(<r2>)1/2 7.046