All results from a given calculation for C4H4N2 (Pyrazine)
using model chemistry: CISD/6-31+G**
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/6-31+G**
| hartrees |
Energy at 0K | -263.414129 |
Energy at 298.15K | -263.408888 |
Nuclear repulsion energy | 209.975575 |
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/6-31+G**
Geometric Data calculated at CISD/6-31+G**
Point Group is D2h
Cartesians (Å)
Atom |
x (Å) |
y (Å) |
z (Å) |
N1 |
0.000 |
0.000 |
1.398 |
N2 |
0.000 |
0.000 |
-1.398 |
C3 |
0.000 |
1.126 |
0.694 |
C4 |
0.000 |
-1.126 |
0.694 |
C5 |
0.000 |
-1.126 |
-0.694 |
C6 |
0.000 |
1.126 |
-0.694 |
H7 |
0.000 |
2.050 |
1.246 |
H8 |
0.000 |
-2.050 |
1.246 |
H9 |
0.000 |
-2.050 |
-1.246 |
H10 |
0.000 |
2.050 |
-1.246 |
Atom - Atom Distances (Å)
|
N1 |
N2 |
C3 |
C4 |
C5 |
C6 |
H7 |
H8 |
H9 |
H10 |
N1 | | 2.7958 | 1.3280 | 1.3280 | 2.3763 | 2.3763 | 2.0560 | 2.0560 | 3.3456 | 3.3456 |
N2 | 2.7958 | | 2.3763 | 2.3763 | 1.3280 | 1.3280 | 3.3456 | 3.3456 | 2.0560 | 2.0560 | C3 | 1.3280 | 2.3763 | | 2.2527 | 2.6465 | 1.3890 | 1.0759 | 3.2242 | 3.7224 | 2.1490 | C4 | 1.3280 | 2.3763 | 2.2527 | | 1.3890 | 2.6465 | 3.2242 | 1.0759 | 2.1490 | 3.7224 | C5 | 2.3763 | 1.3280 | 2.6465 | 1.3890 | | 2.2527 | 3.7224 | 2.1490 | 1.0759 | 3.2242 | C6 | 2.3763 | 1.3280 | 1.3890 | 2.6465 | 2.2527 | | 2.1490 | 3.7224 | 3.2242 | 1.0759 | H7 | 2.0560 | 3.3456 | 1.0759 | 3.2242 | 3.7224 | 2.1490 | | 4.1007 | 4.7983 | 2.4915 | H8 | 2.0560 | 3.3456 | 3.2242 | 1.0759 | 2.1490 | 3.7224 | 4.1007 | | 2.4915 | 4.7983 | H9 | 3.3456 | 2.0560 | 3.7224 | 2.1490 | 1.0759 | 3.2242 | 4.7983 | 2.4915 | | 4.1007 | H10 | 3.3456 | 2.0560 | 2.1490 | 3.7224 | 3.2242 | 1.0759 | 2.4915 | 4.7983 | 4.1007 | |
More geometry information
Calculated Bond Angles
atom1 |
atom2 |
atom3 |
angle |
|
atom1 |
atom2 |
atom3 |
angle |
N1 |
C3 |
C6 |
121.984 |
|
N1 |
C3 |
H7 |
117.195 |
N1 |
C4 |
C5 |
121.984 |
|
N1 |
C4 |
H8 |
117.195 |
N2 |
C5 |
C4 |
121.984 |
|
N2 |
C5 |
H9 |
117.195 |
N2 |
C6 |
C3 |
121.984 |
|
N2 |
C6 |
H10 |
117.195 |
C3 |
N1 |
C4 |
116.031 |
|
C3 |
C6 |
H10 |
120.821 |
C4 |
C5 |
H9 |
120.821 |
|
C5 |
N2 |
C6 |
116.031 |
C5 |
C4 |
H8 |
120.821 |
|
C6 |
C3 |
H7 |
120.821 |
Electronic energy levels
Electronic state
Charges, Dipole, Quadrupole and Polarizability