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All results from a given calculation for CH3CCH (propyne)

using model chemistry: HSEh1PBE/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A'
Energy calculated at HSEh1PBE/6-311G*
 hartrees
Energy at 0K-116.536264
Energy at 298.15K 
HF Energy-116.536264
Nuclear repulsion energy58.874231
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 HSEh1PBE/6-311G*
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 3487 3346 49.68 26.31 0.27 0.42
2 A1 3054 2930 18.17 192.63 0.01 0.02
3 A1 2249 2158 6.57 109.96 0.29 0.45
4 A1 1424 1367 0.22 17.06 0.56 0.72
5 A1 963 924 0.42 2.98 0.17 0.29
6 E 3124 2997 10.35 87.26 0.75 0.86
6 E 3124 2997 10.35 87.26 0.75 0.86
7 E 1493 1433 9.87 13.02 0.75 0.86
7 E 1493 1433 9.87 13.02 0.75 0.86
8 E 1060 1017 1.24 0.03 0.75 0.86
8 E 1060 1017 1.24 0.03 0.75 0.86
9 E 632 607 50.39 2.51 0.75 0.86
9 E 632 607 50.39 2.51 0.75 0.86
10 E 339 326 8.30 10.14 0.75 0.86
10 E 339 326 8.30 10.14 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12236.8 cm-1
Scaled (by 0.9596) Zero Point Vibrational Energy (zpe) 11742.4 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 HSEh1PBE/6-311G*
ABC
5.35663 0.28750 0.28750

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-311G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.235
C2 0.000 0.000 0.217
C3 0.000 0.000 1.418
H4 0.000 0.000 2.483
H5 0.000 1.020 -1.628
H6 0.884 -0.510 -1.628
H7 -0.884 -0.510 -1.628

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.45132.65263.71721.09341.09341.0934
C21.45131.20132.26592.10782.10782.1078
C32.65261.20131.06463.21203.21203.2120
H43.71722.26591.06464.23504.23504.2350
H51.09342.10783.21204.23501.76711.7671
H61.09342.10783.21204.23501.76711.7671
H71.09342.10783.21204.23501.76711.7671

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 111.073
C2 C1 H6 111.073 C2 C1 H7 111.073
C2 C3 H4 180.000 H5 C1 H6 107.823
H5 C1 H7 107.823 H6 C1 H7 107.823
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.796      
2 C 0.093      
3 C -0.316      
4 H 0.243      
5 H 0.259      
6 H 0.259      
7 H 0.259      


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 -0.764 0.764
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.544 0.000 0.000
y 0.000 -19.544 0.000
z 0.000 0.000 -13.572
Traceless
 xyz
x -2.986 0.000 0.000
y 0.000 -2.986 0.000
z 0.000 0.000 5.972
Polar
3z2-r211.945
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 2.976 0.000 0.000
y 0.000 2.976 0.000
z 0.000 0.000 6.892


<r2> (average value of r2) Å2
<r2> 49.689
(<r2>)1/2 7.049