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All results from a given calculation for CH3CCH (propyne)

using model chemistry: wB97X-D/CEP-121G*

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/CEP-121G*
 hartrees
Energy at 0K-19.299623
Energy at 298.15K 
HF Energy-19.299623
Nuclear repulsion energy31.414086
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/CEP-121G*
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 3466 3466 35.19 35.69 0.25 0.39
2 A1 3053 3053 28.04 199.85 0.01 0.01
3 A1 2217 2217 4.97 128.45 0.27 0.42
4 A1 1427 1427 0.07 12.53 0.60 0.75
5 A1 935 935 1.05 5.97 0.16 0.28
6 E 3123 3123 16.88 83.41 0.75 0.86
6 E 3123 3123 17.32 83.69 0.75 0.86
7 E 1499 1499 8.75 13.44 0.75 0.86
7 E 1499 1499 8.72 13.59 0.75 0.86
8 E 1067 1067 0.98 0.01 0.75 0.86
8 E 1066 1066 0.95 0.01 0.75 0.86
9 E 681 681 73.69 7.90 0.75 0.86
9 E 681 681 73.68 7.89 0.75 0.86
10 E 395 395 11.55 12.29 0.75 0.86
10 E 395 395 11.60 12.19 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12314.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12314.4 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 wB97X-D/CEP-121G*
ABC
5.30830 0.28223 0.28223

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/CEP-121G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.250
C2 0.000 0.000 0.222
C3 0.000 0.000 1.430
H4 0.000 0.000 2.498
H5 0.000 1.025 -1.637
H6 0.888 -0.512 -1.637
H7 -0.888 -0.512 -1.637

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.47252.68043.74831.09541.09541.0954
C21.47251.20792.27582.12302.12302.1230
C32.68041.20791.06793.23383.23383.2338
H43.74832.27581.06794.26024.26024.2602
H51.09542.12303.23384.26021.77511.7751
H61.09542.12303.23384.26021.77511.7751
H71.09542.12303.23384.26021.77511.7751

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/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.640      
2 C 0.633      
3 C -0.982      
4 H 0.370      
5 H 0.207      
6 H 0.207      
7 H 0.207      


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 -0.780 0.780
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.426 0.000 0.000
y 0.000 -19.426 0.000
z 0.000 0.000 -13.257
Traceless
 xyz
x -3.084 0.000 0.000
y 0.000 -3.084 0.000
z 0.000 0.000 6.168
Polar
3z2-r212.337
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 3.157 0.000 0.000
y 0.000 3.161 0.001
z 0.000 0.001 7.156


<r2> (average value of r2) Å2
<r2> 42.911
(<r2>)1/2 6.551