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

using model chemistry: BLYP/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at BLYP/3-21G*
 hartrees
Energy at 0K-294.583166
Energy at 298.15K-294.587741
Nuclear repulsion energy205.427043
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 BLYP/3-21G*
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 3135 3115 0.00      
2 Ag 1208 1201 0.00      
3 Ag 868 862 0.00      
4 Ag 711 706 0.00      
5 Au 268 266 0.00      
6 B1u 3134 3113 12.61      
7 B1u 1106 1099 41.33      
8 B1u 988 982 10.17      
9 B2g 977 971 0.00      
10 B2g 778 773 0.00      
11 B2u 1384 1375 20.06      
12 B2u 998 991 0.07      
13 B2u 641 636 10.28      
14 B3g 1367 1358 0.00      
15 B3g 1242 1234 0.00      
16 B3g 605 601 0.00      
17 B3u 914 908 4.54      
18 B3u 115 114 57.66      

Unscaled Zero Point Vibrational Energy (zpe) 10218.3 cm-1
Scaled (by 0.9935) Zero Point Vibrational Energy (zpe) 10151.8 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 BLYP/3-21G*
ABC
0.21131 0.19812 0.10225

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/3-21G*

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.299
C2 0.000 0.000 -1.299
N3 0.000 1.233 0.705
N4 0.000 -1.233 0.705
N5 0.000 -1.233 -0.705
N6 0.000 1.233 -0.705
H7 0.000 0.000 2.388
H8 0.000 0.000 -2.388

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.59701.36811.36812.35202.35201.08973.6867
C22.59702.35202.35201.36811.36813.68671.0897
N31.36812.35202.46502.83951.40932.08653.3294
N41.36812.35202.46501.40932.83952.08653.3294
N52.35201.36812.83951.40932.46503.32942.0865
N62.35201.36811.40932.83952.46503.32942.0865
H71.08973.68672.08652.08653.32943.32944.7764
H83.68671.08973.32943.32942.08652.08654.7764

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 115.726 C1 N4 N5 115.726
C2 N5 N4 115.726 C2 N6 N3 115.726
N3 C1 N4 128.549 N3 C1 H7 115.726
N4 C1 H7 115.726 N5 C2 N6 128.549
N5 C2 H8 115.726 N6 C2 H8 115.726
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.195      
2 C 0.195      
3 N -0.225      
4 N -0.225      
5 N -0.225      
6 N -0.225      
7 H 0.254      
8 H 0.254      


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 -32.873 0.000 0.000
y 0.000 -44.489 0.000
z 0.000 0.000 -28.350
Traceless
 xyz
x 3.547 0.000 0.000
y 0.000 -13.878 0.000
z 0.000 0.000 10.332
Polar
3z2-r220.663
x2-y211.617
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.475 0.000 0.000
y 0.000 6.100 0.000
z 0.000 0.000 8.010


<r2> (average value of r2) Å2
<r2> 110.087
(<r2>)1/2 10.492