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

using model chemistry: HF/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-294.705604
Energy at 298.15K-294.711230
HF Energy-294.705604
Nuclear repulsion energy217.078707
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/Def2TZVPP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Ag 3386 3069 0.00      
2 Ag 1713 1552 0.00      
3 Ag 1172 1062 0.00      
4 Ag 822 745 0.00      
5 Au 459 416 0.00      
6 B1u 3384 3067 7.70      
7 B1u 1368 1240 79.76      
8 B1u 1194 1082 5.82      
9 B2g 1112 1008 0.00      
10 B2g 909 824 0.00      
11 B2u 1640 1487 1.35      
12 B2u 1266 1147 19.82      
13 B2u 831 753 116.18      
14 B3g 1773 1607 0.00      
15 B3g 1446 1311 0.00      
16 B3g 711 644 0.00      
17 B3u 1043 945 2.41      
18 B3u 408 370 52.08      

Unscaled Zero Point Vibrational Energy (zpe) 12316.7 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 11163.8 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/Def2TZVPP
ABC
0.23611 0.22132 0.11424

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.245
C2 0.000 0.000 -1.245
N3 0.000 1.165 0.638
N4 0.000 -1.165 0.638
N5 0.000 -1.165 -0.638
N6 0.000 1.165 -0.638
H7 0.000 0.000 2.312
H8 0.000 0.000 -2.312

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.49041.31401.31402.21472.21471.06723.5576
C22.49042.21472.21471.31401.31403.55761.0672
N31.31402.21472.33072.65721.27622.03993.1723
N41.31402.21472.33071.27622.65722.03993.1723
N52.21471.31402.65721.27622.33073.17232.0399
N62.21471.31401.27622.65722.33073.17232.0399
H71.06723.55762.03992.03993.17233.17234.6248
H83.55761.06723.17233.17232.03992.03994.6248

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 117.518 C1 N4 N5 117.518
C2 N5 N4 117.518 C2 N6 N3 117.518
N3 C1 N4 124.963 N3 C1 H7 117.518
N4 C1 H7 117.518 N5 C2 N6 124.963
N5 C2 H8 117.518 N6 C2 H8 117.518
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.223      
2 C 0.223      
3 N -0.169      
4 N -0.169      
5 N -0.169      
6 N -0.169      
7 H 0.116      
8 H 0.116      


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 -32.968 0.000 0.000
y 0.000 -43.910 0.000
z 0.000 0.000 -27.956
Traceless
 xyz
x 2.965 0.000 0.000
y 0.000 -13.448 0.000
z 0.000 0.000 10.483
Polar
3z2-r220.966
x2-y210.941
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.149 0.000 0.000
y 0.000 7.204 0.000
z 0.000 0.000 8.064


<r2> (average value of r2) Å2
<r2> 100.936
(<r2>)1/2 10.047