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

using model chemistry: B3LYP/CEP-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 B3LYP/CEP-31G*
 hartrees
Energy at 0K-52.014033
Energy at 298.15K-52.019176
Nuclear repulsion energy106.795139
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 B3LYP/CEP-31G*
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 3217 3107 0.00      
2 Ag 1477 1426 0.00      
3 Ag 1029 994 0.00      
4 Ag 736 711 0.00      
5 Au 337 325 0.00      
6 B1u 3211 3100 9.53      
7 B1u 1210 1168 56.85      
8 B1u 1069 1032 0.15      
9 B2g 990 956 0.00      
10 B2g 805 777 0.00      
11 B2u 1467 1417 2.01      
12 B2u 1142 1103 11.89      
13 B2u 1003 968 37.19      
14 B3g 1547 1494 0.00      
15 B3g 1319 1274 0.00      
16 B3g 630 608 0.00      
17 B3u 924 892 5.63      
18 B3u 268 258 55.86      

Unscaled Zero Point Vibrational Energy (zpe) 11189.4 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 10805.6 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 B3LYP/CEP-31G*
ABC
0.22355 0.20542 0.10705

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G*

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.274
C2 0.000 0.000 -1.274
N3 0.000 1.210 0.670
N4 0.000 -1.210 0.670
N5 0.000 -1.210 -0.670
N6 0.000 1.210 -0.670
H7 0.000 0.000 2.368
H8 0.000 0.000 -2.368

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.54851.35291.35292.29012.29011.09403.6426
C22.54852.29012.29011.35291.35293.64261.0940
N31.35292.29012.42082.76681.33972.08563.2704
N41.35292.29012.42081.33972.76682.08563.2704
N52.29011.35292.76681.33972.42083.27042.0856
N62.29011.35291.33972.76682.42083.27042.0856
H71.09403.64262.08562.08563.27043.27044.7366
H83.64261.09403.27043.27042.08562.08564.7366

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 116.535 C1 N4 N5 116.535
C2 N5 N4 116.535 C2 N6 N3 116.535
N3 C1 N4 126.929 N3 C1 H7 116.535
N4 C1 H7 116.535 N5 C2 N6 126.929
N5 C2 H8 116.535 N6 C2 H8 116.535
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.526      
2 C -0.526      
3 N 0.124      
4 N 0.124      
5 N 0.124      
6 N 0.124      
7 H 0.277      
8 H 0.277      


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 -32.610 0.000 0.000
y 0.000 -44.135 0.000
z 0.000 0.000 -27.651
Traceless
 xyz
x 3.283 0.000 0.000
y 0.000 -14.005 0.000
z 0.000 0.000 10.722
Polar
3z2-r221.444
x2-y211.525
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.627 0.000 0.000
y 0.000 7.006 0.000
z 0.000 0.000 8.087


<r2> (average value of r2) Å2
<r2> 84.218
(<r2>)1/2 9.177