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

using model chemistry: B3LYP/SDD

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/SDD
 hartrees
Energy at 0K-296.235445
Energy at 298.15K-296.240524
Nuclear repulsion energy207.903491
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/SDD
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 3275 3149 0.00      
2 Ag 1396 1342 0.00      
3 Ag 978 940 0.00      
4 Ag 725 697 0.00      
5 Au 346 333 0.00      
6 B1u 3275 3148 2.32      
7 B1u 1181 1135 50.39      
8 B1u 1035 995 5.42      
9 B2g 953 916 0.00      
10 B2g 815 783 0.00      
11 B2u 1433 1377 15.51      
12 B2u 1078 1036 3.41      
13 B2u 905 870 24.77      
14 B3g 1471 1414 0.00      
15 B3g 1309 1258 0.00      
16 B3g 631 606 0.00      
17 B3u 909 874 5.89      
18 B3u 254 244 68.30      

Unscaled Zero Point Vibrational Energy (zpe) 10983.7 cm-1
Scaled (by 0.9613) Zero Point Vibrational Energy (zpe) 10558.6 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/SDD
ABC
0.21607 0.20320 0.10472

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/SDD

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.301
C2 0.000 0.000 -1.301
N3 0.000 1.217 0.681
N4 0.000 -1.217 0.681
N5 0.000 -1.217 -0.681
N6 0.000 1.217 -0.681
H7 0.000 0.000 2.384
H8 0.000 0.000 -2.384

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.60141.36581.36582.32542.32541.08303.6844
C22.60142.32542.32541.36581.36583.68441.0830
N31.36582.32542.43402.78901.36162.09303.2973
N41.36582.32542.43401.36162.78902.09303.2973
N52.32541.36582.78901.36162.43403.29732.0930
N62.32541.36581.36162.78902.43403.29732.0930
H71.08303.68442.09302.09303.29733.29734.7674
H83.68441.08303.29733.29732.09302.09304.7674

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 116.991 C1 N4 N5 116.991
C2 N5 N4 116.991 C2 N6 N3 116.991
N3 C1 N4 126.018 N3 C1 H7 116.991
N4 C1 H7 116.991 N5 C2 N6 126.018
N5 C2 H8 116.991 N6 C2 H8 116.991
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.246      
2 C -0.246      
3 N -0.017      
4 N -0.017      
5 N -0.017      
6 N -0.017      
7 H 0.280      
8 H 0.280      


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 -33.058 0.000 0.000
y 0.000 -47.245 0.000
z 0.000 0.000 -28.305
Traceless
 xyz
x 4.718 0.000 0.000
y 0.000 -16.564 0.000
z 0.000 0.000 11.846
Polar
3z2-r223.693
x2-y214.188
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.271 0.000 0.000
y 0.000 6.817 0.000
z 0.000 0.000 8.079


<r2> (average value of r2) Å2
<r2> 108.726
(<r2>)1/2 10.427