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All results from a given calculation for CH3CCH (propyne)

using model chemistry: TPSSh/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A'
Energy calculated at TPSSh/TZVP
 hartrees
Energy at 0K-116.702854
Energy at 298.15K 
HF Energy-116.702854
Nuclear repulsion energy58.770163
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 TPSSh/TZVP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3474 3348 60.59 29.45 0.19 0.33
2 A1 3030 2920 19.01 223.01 0.01 0.02
3 A1 2219 2139 8.23 131.56 0.23 0.37
4 A1 1421 1370 0.08 16.43 0.52 0.69
5 A1 940 906 0.56 2.88 0.09 0.17
6 E 3093 2981 10.02 84.63 0.75 0.86
6 E 3093 2981 10.02 84.63 0.75 0.86
7 E 1491 1437 8.09 11.79 0.75 0.86
7 E 1491 1437 8.09 11.79 0.75 0.86
8 E 1057 1018 0.15 0.02 0.75 0.86
8 E 1057 1018 0.15 0.02 0.75 0.86
9 E 651 627 54.11 4.70 0.75 0.86
9 E 651 627 54.11 4.71 0.75 0.86
10 E 337 324 9.48 11.58 0.75 0.86
10 E 337 324 9.48 11.58 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12170.7 cm-1
Scaled (by 0.9637) Zero Point Vibrational Energy (zpe) 11728.9 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at TPSSh/TZVP
ABC
5.33626 0.28627 0.28627

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/TZVP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.239
C2 0.000 0.000 0.217
C3 0.000 0.000 1.421
H4 0.000 0.000 2.484
H5 0.000 1.022 -1.627
H6 0.885 -0.511 -1.627
H7 -0.885 -0.511 -1.627

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.45642.66023.72351.09331.09331.0933
C21.45641.20382.26712.10862.10862.1086
C32.66021.20381.06333.21493.21493.2149
H43.72352.26711.06334.23654.23654.2365
H51.09332.10863.21494.23651.77051.7705
H61.09332.10863.21494.23651.77051.7705
H71.09332.10863.21494.23651.77051.7705

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 110.778
C2 C1 H6 110.778 C2 C1 H7 110.778
C2 C3 H4 180.000 H5 C1 H6 108.134
H5 C1 H7 108.134 H6 C1 H7 108.134
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.451      
2 C 0.021      
3 C -0.121      
4 H 0.133      
5 H 0.139      
6 H 0.139      
7 H 0.139      


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 -0.827 0.827
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.347 0.000 0.000
y 0.000 3.347 0.000
z 0.000 0.000 7.292


<r2> (average value of r2) Å2
<r2> 49.912
(<r2>)1/2 7.065