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

using model chemistry: B1B95/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at B1B95/6-31G(2df,p)
 hartrees
Energy at 0K-296.238268
Energy at 298.15K-296.243458
Nuclear repulsion energy213.854532
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 B1B95/6-31G(2df,p)
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 3220 3084 0.00      
2 Ag 1519 1455 0.00      
3 Ag 1073 1028 0.00      
4 Ag 751 719 0.00      
5 Au 339 325 0.00      
6 B1u 3218 3082 9.17      
7 B1u 1248 1195 62.15      
8 B1u 1098 1052 4.49      
9 B2g 1014 971 0.00      
10 B2g 842 807 0.00      
11 B2u 1489 1426 1.99      
12 B2u 1172 1122 8.68      
13 B2u 1028 984 35.46      
14 B3g 1594 1527 0.00      
15 B3g 1330 1274 0.00      
16 B3g 639 612 0.00      
17 B3u 939 899 0.44      
18 B3u 240 230 49.41      

Unscaled Zero Point Vibrational Energy (zpe) 11375.8 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 10894.6 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 B1B95/6-31G(2df,p)
ABC
0.23113 0.21305 0.11086

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G(2df,p)

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.254
C2 0.000 0.000 -1.254
N3 0.000 1.189 0.657
N4 0.000 -1.189 0.657
N5 0.000 -1.189 -0.657
N6 0.000 1.189 -0.657
H7 0.000 0.000 2.338
H8 0.000 0.000 -2.338

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.50881.33041.33042.25052.25051.08383.5926
C22.50882.25052.25051.33041.33043.59261.0838
N31.33042.25052.37712.71571.31332.05923.2221
N41.33042.25052.37711.31332.71572.05923.2221
N52.25051.33042.71571.31332.37713.22212.0592
N62.25051.33041.31332.71572.37713.22212.0592
H71.08383.59262.05922.05923.22213.22214.6764
H83.59261.08383.22213.22212.05922.05924.6764

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 116.699 C1 N4 N5 116.699
C2 N5 N4 116.699 C2 N6 N3 116.699
N3 C1 N4 126.602 N3 C1 H7 116.699
N4 C1 H7 116.699 N5 C2 N6 126.602
N5 C2 H8 116.699 N6 C2 H8 116.699
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.155      
2 C 0.155      
3 N -0.162      
4 N -0.162      
5 N -0.162      
6 N -0.162      
7 H 0.169      
8 H 0.169      


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 -32.032 0.000 0.000
y 0.000 -42.316 0.000
z 0.000 0.000 -27.503
Traceless
 xyz
x 2.878 0.000 0.000
y 0.000 -12.549 0.000
z 0.000 0.000 9.671
Polar
3z2-r219.342
x2-y210.284
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.476 0.000 0.000
y 0.000 6.711 0.000
z 0.000 0.000 8.044


<r2> (average value of r2) Å2
<r2> 102.648
(<r2>)1/2 10.132