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All results from a given calculation for CH3CCH (propyne)

using model chemistry: PBEPBE/daug-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 PBEPBE/daug-cc-pVDZ
 hartrees
Energy at 0K-116.501392
Energy at 298.15K 
HF Energy-116.501392
Nuclear repulsion energy58.197227
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 PBEPBE/daug-cc-pVDZ
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 3417 3417 63.06 30.94 0.27 0.43
2 A1 2965 2965 19.60 278.80 0.03 0.05
3 A1 2164 2164 12.24 200.31 0.13 0.23
4 A1 1334 1334 0.00 16.63 0.43 0.60
5 A1 941 941 0.13 5.63 0.01 0.03
6 E 3041 3041 5.50 86.97 0.75 0.86
6 E 3041 3041 5.50 86.91 0.75 0.86
7 E 1399 1399 8.88 6.96 0.75 0.86
7 E 1399 1399 8.88 6.99 0.75 0.86
8 E 992 992 0.18 0.15 0.75 0.86
8 E 992 992 0.18 0.16 0.75 0.86
9 E 550 550 52.97 2.01 0.75 0.86
9 E 550 550 52.97 1.99 0.75 0.86
10 E 297 297 4.67 3.43 0.75 0.86
10 E 297 297 4.67 3.44 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11689.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11689.6 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 PBEPBE/daug-cc-pVDZ
ABC
5.22078 0.28138 0.28138

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.247
C2 0.000 0.000 0.213
C3 0.000 0.000 1.436
H4 0.000 0.000 2.512
H5 0.000 1.033 -1.642
H6 0.895 -0.517 -1.642
H7 -0.895 -0.517 -1.642

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.45952.68253.75811.10631.10631.1063
C21.45951.22312.29872.12302.12302.1230
C32.68251.22311.07563.24643.24643.2464
H43.75812.29871.07564.27984.27984.2798
H51.10632.12303.24644.27981.78991.7899
H61.10632.12303.24644.27981.78991.7899
H71.10632.12303.24644.27981.78991.7899

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 110.918
C2 C1 H6 110.918 C2 C1 H7 110.918
C2 C3 H4 180.000 H5 C1 H6 107.987
H5 C1 H7 107.987 H6 C1 H7 107.987
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.186      
2 C -0.808      
3 C 2.009      
4 H -0.836      
5 H -0.060      
6 H -0.060      
7 H -0.060      


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 -0.887 0.887
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.898 0.000 0.000
y 0.000 -19.898 0.000
z 0.000 0.000 -14.342
Traceless
 xyz
x -2.778 0.000 0.000
y 0.000 -2.778 0.000
z 0.000 0.000 5.556
Polar
3z2-r211.112
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 4.595 0.000 0.000
y 0.000 4.595 0.000
z 0.000 0.000 8.194


<r2> (average value of r2) Å2
<r2> 50.834
(<r2>)1/2 7.130