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All results from a given calculation for CH3CCH (propyne)

using model chemistry: wB97X-D/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 wB97X-D/daug-cc-pVTZ
 hartrees
Energy at 0K-116.654382
Energy at 298.15K 
HF Energy-116.654382
Nuclear repulsion energy58.966184
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 wB97X-D/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 3480 3480 61.64 23.29 0.29 0.45
2 A1 3058 3058 15.09 237.04 0.01 0.01
3 A1 2254 2254 9.93 167.12 0.12 0.21
4 A1 1416 1416 0.02 10.57 0.46 0.63
5 A1 949 949 0.33 6.45 0.02 0.04
6 E 3131 3131 5.10 63.73 0.75 0.86
6 E 3131 3131 5.12 64.39 0.75 0.86
7 E 1485 1485 9.69 5.86 0.75 0.86
7 E 1485 1485 9.70 6.02 0.75 0.86
8 E 1061 1061 0.29 0.18 0.75 0.86
8 E 1061 1061 0.29 0.18 0.75 0.86
9 E 695 695 48.48 3.13 0.75 0.86
9 E 695 695 48.48 3.07 0.75 0.86
10 E 353 353 11.15 3.64 0.75 0.86
10 E 353 353 11.15 3.67 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12302.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12302.1 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 wB97X-D/daug-cc-pVTZ
ABC
5.36563 0.28805 0.28805

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/daug-cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.236
C2 0.000 0.000 0.219
C3 0.000 0.000 1.415
H4 0.000 0.000 2.477
H5 0.000 1.019 -1.621
H6 0.883 -0.510 -1.621
H7 -0.883 -0.510 -1.621

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.45552.65183.71371.08961.08961.0896
C21.45551.19632.25822.10382.10382.1038
C32.65181.19631.06193.20323.20323.2032
H43.71372.25821.06194.22344.22344.2234
H51.08962.10383.20324.22341.76561.7656
H61.08962.10383.20324.22341.76561.7656
H71.08962.10383.20324.22341.76561.7656

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 110.685
C2 C1 H6 110.685 C2 C1 H7 110.685
C2 C3 H4 180.000 H5 C1 H6 108.231
H5 C1 H7 108.231 H6 C1 H7 108.231
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.560      
2 C 1.103      
3 C -1.860      
4 H 1.015      
5 H 0.100      
6 H 0.100      
7 H 0.100      


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 -0.831 0.831
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.587 0.000 0.000
y 0.000 -19.587 0.000
z 0.000 0.000 -13.930
Traceless
 xyz
x -2.829 0.000 0.000
y 0.000 -2.829 0.000
z 0.000 0.000 5.657
Polar
3z2-r211.315
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 4.356 0.000 0.000
y 0.000 4.355 -0.000
z 0.000 -0.000 7.488


<r2> (average value of r2) Å2
<r2> 49.676
(<r2>)1/2 7.048