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All results from a given calculation for CH3CCH (propyne)

using model chemistry: B97D3/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 B97D3/Def2TZVPP
 hartrees
Energy at 0K-116.623539
Energy at 298.15K 
HF Energy-116.623539
Nuclear repulsion energy58.665511
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/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 3428 3381 53.26 30.20 0.21 0.35
2 A1 2976 2935 22.25 242.46 0.02 0.03
3 A1 2173 2143 10.66 146.64 0.21 0.35
4 A1 1384 1365 0.08 15.80 0.43 0.60
5 A1 931 918 0.21 3.40 0.05 0.10
6 E 3037 2996 9.56 83.65 0.75 0.86
6 E 3037 2996 9.56 83.60 0.75 0.86
7 E 1448 1428 7.43 8.95 0.75 0.86
7 E 1448 1428 7.43 8.94 0.75 0.86
8 E 1032 1018 0.31 0.08 0.75 0.86
8 E 1032 1018 0.31 0.07 0.75 0.86
9 E 624 615 50.36 3.14 0.75 0.86
9 E 624 615 50.36 3.17 0.75 0.86
10 E 330 326 8.08 6.84 0.75 0.86
10 E 330 326 8.08 6.86 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11916.5 cm-1
Scaled (by 0.9863) Zero Point Vibrational Energy (zpe) 11753.3 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/Def2TZVPP
ABC
5.32675 0.28539 0.28539

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/Def2TZVPP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.239
C2 0.000 0.000 0.216
C3 0.000 0.000 1.424
H4 0.000 0.000 2.490
H5 0.000 1.023 -1.632
H6 0.886 -0.512 -1.632
H7 -0.886 -0.512 -1.632

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.45542.66333.72891.09601.09601.0960
C21.45541.20792.27352.11282.11282.1128
C32.66331.20791.06563.22313.22313.2231
H43.72892.27351.06564.24714.24714.2471
H51.09602.11283.22314.24711.77201.7720
H61.09602.11283.22314.24711.77201.7720
H71.09602.11283.22314.24711.77201.7720

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 111.020
C2 C1 H6 111.020 C2 C1 H7 111.020
C2 C3 H4 180.000 H5 C1 H6 107.879
H5 C1 H7 107.879 H6 C1 H7 107.879
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.205      
2 C -0.229      
3 C 0.010      
4 H 0.161      
5 H 0.088      
6 H 0.088      
7 H 0.088      


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 -0.850 0.850
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.635 0.000 0.000
y 0.000 -19.635 0.000
z 0.000 0.000 -14.158
Traceless
 xyz
x -2.739 0.000 0.000
y 0.000 -2.739 0.000
z 0.000 0.000 5.477
Polar
3z2-r210.954
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 3.821 0.000 0.000
y 0.000 3.821 0.000
z 0.000 0.000 7.700


<r2> (average value of r2) Å2
<r2> 50.118
(<r2>)1/2 7.079