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All results from a given calculation for CH3CCH (propyne)

using model chemistry: BLYP/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A'
Energy calculated at BLYP/Def2TZVPP
 hartrees
Energy at 0K-116.648226
Energy at 298.15K 
HF Energy-116.648226
Nuclear repulsion energy58.524487
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 BLYP/Def2TZVPP
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 3404 3404 56.96 31.14 0.22 0.35
2 A1 2955 2955 20.30 243.51 0.02 0.03
3 A1 2154 2154 9.78 143.38 0.21 0.35
4 A1 1382 1382 0.08 17.24 0.42 0.59
5 A1 918 918 0.23 2.98 0.05 0.10
6 E 3005 3005 8.97 85.00 0.75 0.86
6 E 3005 3005 8.97 84.99 0.75 0.86
7 E 1443 1443 7.28 9.46 0.75 0.86
7 E 1443 1443 7.28 9.46 0.75 0.86
8 E 1031 1031 0.27 0.05 0.75 0.86
8 E 1031 1031 0.27 0.05 0.75 0.86
9 E 622 622 50.66 3.03 0.75 0.86
9 E 622 622 50.66 3.03 0.75 0.86
10 E 331 331 8.41 6.95 0.75 0.86
10 E 331 331 8.41 6.94 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11837.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11837.9 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 BLYP/Def2TZVPP
ABC
5.31226 0.28384 0.28384

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/Def2TZVPP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.243
C2 0.000 0.000 0.218
C3 0.000 0.000 1.428
H4 0.000 0.000 2.494
H5 0.000 1.024 -1.638
H6 0.887 -0.512 -1.638
H7 -0.887 -0.512 -1.638

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.46072.67043.73711.09821.09821.0982
C21.46071.20972.27632.12032.12032.1203
C32.67041.20971.06663.23273.23273.2327
H43.73712.27631.06664.25784.25784.2578
H51.09822.12033.23274.25781.77451.7745
H61.09822.12033.23274.25781.77451.7745
H71.09822.12033.23274.25781.77451.7745

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 111.116
C2 C1 H6 111.116 C2 C1 H7 111.116
C2 C3 H4 180.000 H5 C1 H6 107.778
H5 C1 H7 107.778 H6 C1 H7 107.778
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.249      
2 C -0.394      
3 C 0.070      
4 H 0.246      
5 H 0.109      
6 H 0.109      
7 H 0.109      


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 -0.847 0.847
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.899 0.000 0.000
y 0.000 -19.899 0.000
z 0.000 0.000 -14.479
Traceless
 xyz
x -2.710 0.000 0.000
y 0.000 -2.710 0.000
z 0.000 0.000 5.421
Polar
3z2-r210.841
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 3.857 0.000 0.000
y 0.000 3.857 0.000
z 0.000 0.000 7.757


<r2> (average value of r2) Å2
<r2> 50.504
(<r2>)1/2 7.107