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All results from a given calculation for CH3CCH (propyne)

using model chemistry: B3LYP/daug-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 B3LYP/daug-cc-pVTZ
 hartrees
Energy at 0K-116.705023
Energy at 298.15K 
HF Energy-116.705023
Nuclear repulsion energy58.901670
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 B3LYP/daug-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 3469 3469 63.03 24.70 0.29 0.45
2 A1 3029 3029 17.59 233.10 0.02 0.05
3 A1 2225 2225 10.25 182.70 0.12 0.22
4 A1 1413 1413 0.04 12.66 0.38 0.55
5 A1 941 941 0.32 5.00 0.02 0.03
6 E 3086 3086 6.36 79.01 0.75 0.86
6 E 3086 3086 6.36 78.35 0.75 0.86
7 E 1478 1478 8.60 6.48 0.75 0.86
7 E 1478 1478 8.60 6.10 0.75 0.86
8 E 1058 1058 0.21 0.17 0.75 0.86
8 E 1058 1058 0.21 0.13 0.75 0.86
9 E 672 672 47.82 3.04 0.75 0.86
9 E 672 672 47.81 3.04 0.75 0.86
10 E 346 346 10.00 2.62 0.75 0.86
10 E 346 346 10.00 2.63 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12177.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12177.4 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 B3LYP/daug-cc-pVTZ
ABC
5.37028 0.28739 0.28739

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/daug-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 1.418
H4 0.000 0.000 2.479
H5 0.000 1.019 -1.626
H6 0.882 -0.509 -1.626
H7 -0.882 -0.509 -1.626

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.45522.65433.71531.09091.09091.0909
C21.45521.19912.26022.10742.10742.1074
C32.65431.19911.06113.20983.20983.2098
H43.71532.26021.06114.22954.22954.2295
H51.09092.10743.20984.22951.76481.7648
H61.09092.10743.20984.22951.76481.7648
H71.09092.10743.20984.22951.76481.7648

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 110.922
C2 C1 H6 110.922 C2 C1 H7 110.922
C2 C3 H4 180.000 H5 C1 H6 107.982
H5 C1 H7 107.982 H6 C1 H7 107.982
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.362      
2 C 1.117      
3 C -1.623      
4 H 0.878      
5 H -0.003      
6 H -0.003      
7 H -0.003      


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 -0.837 0.837
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.803 0.000 0.000
y 0.000 -19.803 0.000
z 0.000 0.000 -14.368
Traceless
 xyz
x -2.718 0.000 0.000
y 0.000 -2.718 0.000
z 0.000 0.000 5.435
Polar
3z2-r210.870
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 4.406 0.000 0.000
y 0.000 4.406 0.000
z 0.000 0.000 7.690


<r2> (average value of r2) Å2
<r2> 49.950
(<r2>)1/2 7.068