All results from a given calculation for C4H4N2 (Pyrazine)
using model chemistry: CISD/6-31G
19 10 17 12 22
States and conformations
| State |
Conformation |
minimum conformation |
conformer description |
state description |
| 1 |
1 |
yes |
D2H |
1Ag |
Energy calculated at CISD/6-31G
| | hartrees |
| Energy at 0K | -263.048384 |
| Energy at 298.15K | -263.043124 |
| Nuclear repulsion energy | 207.306943 |
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 CISD/6-31G
Geometric Data calculated at CISD/6-31G
Point Group is D2h
Cartesians (Å)
| Atom |
x (Å) |
y (Å) |
z (Å) |
| N1 |
0.000 |
0.000 |
1.404 |
| N2 |
0.000 |
0.000 |
-1.404 |
| C3 |
0.000 |
1.152 |
0.699 |
| C4 |
0.000 |
-1.152 |
0.699 |
| C5 |
0.000 |
-1.152 |
-0.699 |
| C6 |
0.000 |
1.152 |
-0.699 |
| H7 |
0.000 |
2.073 |
1.265 |
| H8 |
0.000 |
-2.073 |
1.265 |
| H9 |
0.000 |
-2.073 |
-1.265 |
| H10 |
0.000 |
2.073 |
-1.265 |
Atom - Atom Distances (Å)
| |
N1 |
N2 |
C3 |
C4 |
C5 |
C6 |
H7 |
H8 |
H9 |
H10 |
| N1 | | 2.8076 | 1.3506 | 1.3506 | 2.3979 | 2.3979 | 2.0776 | 2.0776 | 3.3796 | 3.3796 |
N2 | 2.8076 | | 2.3979 | 2.3979 | 1.3506 | 1.3506 | 3.3796 | 3.3796 | 2.0776 | 2.0776 | C3 | 1.3506 | 2.3979 | | 2.3043 | 2.6953 | 1.3982 | 1.0810 | 3.2745 | 3.7763 | 2.1696 | C4 | 1.3506 | 2.3979 | 2.3043 | | 1.3982 | 2.6953 | 3.2745 | 1.0810 | 2.1696 | 3.7763 | C5 | 2.3979 | 1.3506 | 2.6953 | 1.3982 | | 2.3043 | 3.7763 | 2.1696 | 1.0810 | 3.2745 | C6 | 2.3979 | 1.3506 | 1.3982 | 2.6953 | 2.3043 | | 2.1696 | 3.7763 | 3.2745 | 1.0810 | H7 | 2.0776 | 3.3796 | 1.0810 | 3.2745 | 3.7763 | 2.1696 | | 4.1460 | 4.8573 | 2.5307 | H8 | 2.0776 | 3.3796 | 3.2745 | 1.0810 | 2.1696 | 3.7763 | 4.1460 | | 2.5307 | 4.8573 | H9 | 3.3796 | 2.0776 | 3.7763 | 2.1696 | 1.0810 | 3.2745 | 4.8573 | 2.5307 | | 4.1460 | H10 | 3.3796 | 2.0776 | 2.1696 | 3.7763 | 3.2745 | 1.0810 | 2.5307 | 4.8573 | 4.1460 | |
More geometry information
Calculated Bond Angles
| atom1 |
atom2 |
atom3 |
angle |
|
atom1 |
atom2 |
atom3 |
angle |
| N1 |
C3 |
C6 |
121.452 |
|
N1 |
C3 |
H7 |
116.958 |
| N1 |
C4 |
C5 |
121.452 |
|
N1 |
C4 |
H8 |
116.958 |
| N2 |
C5 |
C4 |
121.452 |
|
N2 |
C5 |
H9 |
116.958 |
| N2 |
C6 |
C3 |
121.452 |
|
N2 |
C6 |
H10 |
116.958 |
| C3 |
N1 |
C4 |
117.096 |
|
C3 |
C6 |
H10 |
121.590 |
| C4 |
C5 |
H9 |
121.590 |
|
C5 |
N2 |
C6 |
117.096 |
| C5 |
C4 |
H8 |
121.590 |
|
C6 |
C3 |
H7 |
121.590 |
Electronic energy levels
Electronic state
Charges, Dipole, Quadrupole and Polarizability