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All results from a given calculation for CH3CCH (propyne)

using model chemistry: B3LYPultrafine/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A'
Energy calculated at B3LYPultrafine/TZVP
 hartrees
Energy at 0K-116.701276
Energy at 298.15K 
HF Energy-116.701276
Nuclear repulsion energy58.845261
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 B3LYPultrafine/TZVP
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 3353 65.54 26.44 0.19 0.32
2 A1 3032 2921 17.25 221.98 0.01 0.02
3 A1 2233 2151 8.22 131.65 0.23 0.37
4 A1 1421 1369 0.02 15.47 0.52 0.69
5 A1 942 907 0.44 2.58 0.09 0.16
6 E 3091 2978 8.35 83.17 0.75 0.86
6 E 3091 2978 8.35 83.17 0.75 0.86
7 E 1482 1428 9.00 11.32 0.75 0.86
7 E 1482 1428 9.00 11.32 0.75 0.86
8 E 1058 1020 0.40 0.04 0.75 0.86
8 E 1058 1020 0.40 0.04 0.75 0.86
9 E 661 637 54.16 5.48 0.75 0.86
9 E 661 637 54.16 5.48 0.75 0.86
10 E 344 331 10.80 11.41 0.75 0.86
10 E 344 331 10.80 11.41 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12190.0 cm-1
Scaled (by 0.9634) Zero Point Vibrational Energy (zpe) 11743.9 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 B3LYPultrafine/TZVP
ABC
5.35676 0.28691 0.28691

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/TZVP

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 0.218
C3 0.000 0.000 1.419
H4 0.000 0.000 2.481
H5 0.000 1.020 -1.628
H6 0.884 -0.510 -1.628
H7 -0.884 -0.510 -1.628

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.45572.65643.71841.09231.09231.0923
C21.45571.20072.26272.10912.10912.1091
C32.65641.20071.06203.21293.21293.2129
H43.71842.26271.06204.23344.23344.2334
H51.09232.10913.21294.23341.76711.7671
H61.09232.10913.21294.23341.76711.7671
H71.09232.10913.21294.23341.76711.7671

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 110.931
C2 C1 H6 110.931 C2 C1 H7 110.931
C2 C3 H4 180.000 H5 C1 H6 107.972
H5 C1 H7 107.972 H6 C1 H7 107.973
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.462      
2 C -0.059      
3 C -0.095      
4 H 0.168      
5 H 0.149      
6 H 0.149      
7 H 0.149      


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 -0.826 0.826
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.795 0.000 0.000
y 0.000 -19.795 0.000
z 0.000 0.000 -14.160
Traceless
 xyz
x -2.818 0.000 0.000
y 0.000 -2.818 0.000
z 0.000 0.000 5.635
Polar
3z2-r211.271
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 3.385 0.000 0.000
y 0.000 3.385 0.000
z 0.000 0.000 7.270


<r2> (average value of r2) Å2
<r2> 49.971
(<r2>)1/2 7.069