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All results from a given calculation for CH3CCH (propyne)

using model chemistry: wB97X-D/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-116.653134
Energy at 298.15K 
HF Energy-116.653134
Nuclear repulsion energy58.963049
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/cc-pVTZ
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 3334 61.63 24.73 0.35 0.52
2 A1 3059 2924 14.69 209.84 0.01 0.02
3 A1 2257 2158 8.04 117.99 0.25 0.40
4 A1 1420 1357 0.02 9.42 0.48 0.65
5 A1 949 907 0.32 4.02 0.09 0.17
6 E 3132 2994 6.12 74.26 0.75 0.86
6 E 3132 2994 6.13 74.45 0.75 0.86
7 E 1486 1420 8.84 8.24 0.75 0.86
7 E 1486 1420 8.87 8.26 0.75 0.86
8 E 1061 1014 0.57 0.21 0.75 0.86
8 E 1061 1014 0.57 0.21 0.75 0.86
9 E 695 665 46.70 3.10 0.75 0.86
9 E 695 665 46.70 3.10 0.75 0.86
10 E 353 337 10.52 7.16 0.75 0.86
10 E 353 337 10.52 7.17 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12311.8 cm-1
Scaled (by 0.956) Zero Point Vibrational Energy (zpe) 11770.1 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 wB97X-D/cc-pVTZ
ABC
5.36432 0.28802 0.28802

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.237
C2 0.000 0.000 0.219
C3 0.000 0.000 1.415
H4 0.000 0.000 2.477
H5 0.000 1.020 -1.622
H6 0.883 -0.510 -1.622
H7 -0.883 -0.510 -1.622

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.45562.65193.71351.08981.08981.0898
C21.45561.19632.25792.10412.10412.1041
C32.65191.19631.06163.20353.20353.2035
H43.71352.25791.06164.22344.22344.2234
H51.08982.10413.20354.22341.76581.7658
H61.08982.10413.20354.22341.76581.7658
H71.08982.10413.20354.22341.76581.7658

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 110.689
C2 C1 H6 110.689 C2 C1 H7 110.689
C2 C3 H4 180.000 H5 C1 H6 108.227
H5 C1 H7 108.227 H6 C1 H7 108.227
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.215      
2 C -0.007      
3 C -0.202      
4 H 0.120      
5 H 0.102      
6 H 0.102      
7 H 0.102      


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 -0.816 0.816
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.484 0.000 0.000
y 0.000 -19.484 0.000
z 0.000 0.000 -13.782
Traceless
 xyz
x -2.851 0.000 0.000
y 0.000 -2.851 0.000
z 0.000 0.000 5.703
Polar
3z2-r211.405
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 3.565 0.000 0.000
y 0.000 3.565 -0.000
z 0.000 -0.000 7.206


<r2> (average value of r2) Å2
<r2> 49.606
(<r2>)1/2 7.043