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All results from a given calculation for C2H2N4 (sym-tetrazine)

using model chemistry: HF/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at HF/daug-cc-pVTZ
 hartrees
Energy at 0K-294.698912
Energy at 298.15K-294.704528
HF Energy-294.698912
Nuclear repulsion energy216.999647
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 HF/daug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 3384 3061 0.00      
2 Ag 1710 1547 0.00      
3 Ag 1170 1058 0.00      
4 Ag 820 742 0.00      
5 Au 460 416 0.00      
6 B1u 3382 3059 6.95      
7 B1u 1365 1235 80.71      
8 B1u 1192 1078 5.71      
9 B2g 1109 1003 0.00      
10 B2g 907 821 0.00      
11 B2u 1637 1481 1.49      
12 B2u 1263 1143 17.88      
13 B2u 826 748 119.55      
14 B3g 1771 1602 0.00      
15 B3g 1442 1305 0.00      
16 B3g 711 643 0.00      
17 B3u 1041 942 2.40      
18 B3u 407 368 51.02      

Unscaled Zero Point Vibrational Energy (zpe) 12298.3 cm-1
Scaled (by 0.9046) Zero Point Vibrational Energy (zpe) 11125.1 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 HF/daug-cc-pVTZ
ABC
0.23597 0.22112 0.11415

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/daug-cc-pVTZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.249
C2 0.000 0.000 -1.249
N3 0.000 1.167 0.643
N4 0.000 -1.167 0.643
N5 0.000 -1.167 -0.643
N6 0.000 1.167 -0.643
H7 0.000 0.000 2.319
H8 0.000 0.000 -2.319

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.49831.31481.31482.22282.22281.07033.5686
C22.49832.22282.22281.31481.31483.56861.0703
N31.31482.22282.33332.66411.28572.04263.1838
N41.31482.22282.33331.28572.66412.04263.1838
N52.22281.31482.66411.28572.33333.18382.0426
N62.22281.31481.28572.66412.33333.18382.0426
H71.07033.56862.04262.04263.18383.18384.6389
H83.56861.07033.18383.18382.04262.04264.6389

picture of sym-tetrazine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 N6 117.460 C1 N4 N5 117.460
C2 N5 N4 117.460 C2 N6 N3 117.460
N3 C1 N4 125.080 N3 C1 H7 117.460
N4 C1 H7 117.460 N5 C2 N6 125.080
N5 C2 H8 117.460 N6 C2 H8 117.460
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.076      
2 C -0.076      
3 N -0.666      
4 N -0.666      
5 N -0.666      
6 N -0.666      
7 H 1.409      
8 H 1.409      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.116 0.000 0.000
y 0.000 -43.918 0.000
z 0.000 0.000 -27.954
Traceless
 xyz
x 2.820 0.000 0.000
y 0.000 -13.383 0.000
z 0.000 0.000 10.563
Polar
3z2-r221.126
x2-y210.802
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.531 0.000 0.000
y 0.000 7.597 0.000
z 0.000 0.000 8.374


<r2> (average value of r2) Å2
<r2> 101.023
(<r2>)1/2 10.051