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All results from a given calculation for CH3CCH (propyne)

using model chemistry: B97D3/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A'
Energy calculated at B97D3/aug-cc-pVDZ
 hartrees
Energy at 0K-116.587986
Energy at 298.15K 
HF Energy-116.587986
Nuclear repulsion energy58.245014
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 B97D3/aug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3438 3438 51.93 30.41 0.27 0.42
2 A1 2976 2976 26.83 269.75 0.02 0.05
3 A1 2170 2170 11.66 188.43 0.15 0.26
4 A1 1358 1358 0.30 14.86 0.41 0.59
5 A1 932 932 0.35 5.18 0.02 0.03
6 E 3049 3049 10.11 85.65 0.75 0.86
6 E 3049 3049 10.11 85.61 0.75 0.86
7 E 1421 1421 7.61 6.55 0.75 0.86
7 E 1421 1421 7.61 6.53 0.75 0.86
8 E 1012 1012 0.05 0.18 0.75 0.86
8 E 1012 1012 0.05 0.18 0.75 0.86
9 E 565 565 54.13 3.03 0.75 0.86
9 E 565 565 54.14 3.01 0.75 0.86
10 E 296 296 4.89 4.78 0.75 0.86
10 E 296 296 4.90 4.78 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11779.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11779.3 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 B97D3/aug-cc-pVDZ
ABC
5.24607 0.28146 0.28146

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/aug-cc-pVDZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.248
C2 0.000 0.000 0.215
C3 0.000 0.000 1.435
H4 0.000 0.000 2.508
H5 0.000 1.031 -1.640
H6 0.893 -0.515 -1.640
H7 -0.893 -0.515 -1.640

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.46262.68323.75581.10301.10301.1030
C21.46261.22062.29312.12202.12202.1220
C32.68321.22061.07263.24353.24353.2435
H43.75582.29311.07264.27404.27404.2740
H51.10302.12203.24354.27401.78561.7856
H61.10302.12203.24354.27401.78561.7856
H71.10302.12203.24354.27401.78561.7856

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 110.824
C2 C1 H6 110.824 C2 C1 H7 110.824
C2 C3 H4 180.000 H5 C1 H6 108.086
H5 C1 H7 108.086 H6 C1 H7 108.086
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.535      
2 C -0.771      
3 C 1.290      
4 H -0.739      
5 H -0.105      
6 H -0.105      
7 H -0.105      


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 -0.862 0.862
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.813 0.000 0.000
y 0.000 -19.813 0.000
z 0.000 0.000 -14.317
Traceless
 xyz
x -2.748 0.000 0.000
y 0.000 -2.748 0.000
z 0.000 0.000 5.496
Polar
3z2-r210.992
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 4.463 0.000 0.000
y 0.000 4.462 0.000
z 0.000 0.000 8.109


<r2> (average value of r2) Å2
<r2> 50.757
(<r2>)1/2 7.124