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All results from a given calculation for CH3CCH (propyne)

using model chemistry: wB97X-D/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 wB97X-D/aug-cc-pVDZ
 hartrees
Energy at 0K-116.620152
Energy at 298.15K 
HF Energy-116.620152
Nuclear repulsion energy58.523335
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/aug-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 3493 3344 59.86 25.14 0.26 0.42
2 A1 3057 2927 17.11 230.16 0.02 0.03
3 A1 2254 2158 9.67 159.93 0.14 0.25
4 A1 1395 1335 0.00 7.79 0.45 0.62
5 A1 953 913 0.47 6.39 0.03 0.06
6 E 3142 3008 5.92 68.98 0.75 0.86
6 E 3142 3008 5.91 68.90 0.75 0.86
7 E 1457 1395 9.53 5.30 0.75 0.86
7 E 1457 1395 9.57 5.31 0.75 0.86
8 E 1040 996 0.15 0.25 0.75 0.86
8 E 1040 996 0.15 0.25 0.75 0.86
9 E 640 613 53.68 3.53 0.75 0.86
9 E 640 613 53.67 3.54 0.75 0.86
10 E 329 315 8.70 4.25 0.75 0.86
10 E 329 315 8.70 4.26 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12183.9 cm-1
Scaled (by 0.9573) Zero Point Vibrational Energy (zpe) 11663.7 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/aug-cc-pVDZ
ABC
5.27670 0.28400 0.28400

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.245
C2 0.000 0.000 0.217
C3 0.000 0.000 1.427
H4 0.000 0.000 2.496
H5 0.000 1.028 -1.630
H6 0.890 -0.514 -1.630
H7 -0.890 -0.514 -1.630

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.46212.67153.74121.09781.09781.0978
C21.46211.20942.27912.11412.11412.1141
C32.67151.20941.06963.22503.22503.2250
H43.74122.27911.06964.25254.25254.2525
H51.09782.11413.22504.25251.78041.7804
H61.09782.11413.22504.25251.78041.7804
H71.09782.11413.22504.25251.78041.7804

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 110.546
C2 C1 H6 110.545 C2 C1 H7 110.545
C2 C3 H4 180.000 H5 C1 H6 108.376
H5 C1 H7 108.376 H6 C1 H7 108.376
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.386      
2 C -0.826      
3 C 1.183      
4 H -0.615      
5 H -0.043      
6 H -0.043      
7 H -0.043      


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 -0.846 0.846
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.732 0.000 0.000
y 0.000 -19.732 0.000
z 0.000 0.000 -13.904
Traceless
 xyz
x -2.914 0.000 0.000
y 0.000 -2.914 0.000
z 0.000 0.000 5.828
Polar
3z2-r211.657
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 4.333 0.000 0.000
y 0.000 4.332 -0.000
z 0.000 -0.000 7.650


<r2> (average value of r2) Å2
<r2> 50.277
(<r2>)1/2 7.091