All results from a given calculation for CH3CCH (propyne)
using model chemistry: MP2/6-31+G**
19 10 17 12 22
States and conformations
| State |
Conformation |
minimum conformation |
conformer description |
state description |
| 1 |
1 |
yes |
C3V |
1A' |
Energy calculated at MP2/6-31+G**
| | hartrees |
| Energy at 0K | -116.280026 |
| Energy at 298.15K | |
| HF Energy | -115.873972 |
| Nuclear repulsion energy | 58.392416 |
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 MP2/6-31+G**
Geometric Data calculated at MP2/6-31+G**
Point Group is C3v
Cartesians (Å)
| Atom |
x (Å) |
y (Å) |
z (Å) |
| C1 |
0.000 |
0.000 |
-1.250 |
| C2 |
0.000 |
0.000 |
0.214 |
| C3 |
0.000 |
0.000 |
1.436 |
| H4 |
0.000 |
0.000 |
2.500 |
| H5 |
0.000 |
1.019 |
-1.634 |
| H6 |
0.883 |
-0.510 |
-1.634 |
| H7 |
-0.883 |
-0.510 |
-1.634 |
Atom - Atom Distances (Å)
| |
C1 |
C2 |
C3 |
H4 |
H5 |
H6 |
H7 |
| C1 | | 1.4634 | 2.6858 | 3.7493 | 1.0892 | 1.0892 | 1.0892 |
C2 | 1.4634 | | 1.2224 | 2.2859 | 2.1101 | 2.1101 | 2.1101 | C3 | 2.6858 | 1.2224 | | 1.0635 | 3.2348 | 3.2348 | 3.2348 | H4 | 3.7493 | 2.2859 | 1.0635 | | 4.2573 | 4.2573 | 4.2573 | H5 | 1.0892 | 2.1101 | 3.2348 | 4.2573 | | 1.7653 | 1.7653 | H6 | 1.0892 | 2.1101 | 3.2348 | 4.2573 | 1.7653 | | 1.7653 | H7 | 1.0892 | 2.1101 | 3.2348 | 4.2573 | 1.7653 | 1.7653 | |
More geometry information
Calculated Bond Angles
| atom1 |
atom2 |
atom3 |
angle |
|
atom1 |
atom2 |
atom3 |
angle |
| C1 |
C2 |
C3 |
180.000 |
|
C2 |
C1 |
H5 |
110.657 |
| C2 |
C1 |
H6 |
110.657 |
|
C2 |
C1 |
H7 |
110.657 |
| C2 |
C3 |
H4 |
180.000 |
|
H5 |
C1 |
H6 |
108.260 |
| H5 |
C1 |
H7 |
108.260 |
|
H6 |
C1 |
H7 |
108.260 |
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability