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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-51.886108
Energy at 298.15K-51.891163
Nuclear repulsion energy104.771104
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
4/u)
Dep P Dep U
1 Ag 3269 3166 0.00      
2 Ag 1378 1335 0.00      
3 Ag 959 929 0.00      
4 Ag 717 695 0.00      
5 Au 337 326 0.00      
6 B1u 3262 3159 1.94      
7 B1u 1149 1112 47.49      
8 B1u 1014 982 7.73      
9 B2g 985 954 0.00      
10 B2g 791 766 0.00      
11 B2u 1429 1384 17.96      
12 B2u 1066 1032 2.29      
13 B2u 887 859 29.72      
14 B3g 1452 1406 0.00      
15 B3g 1297 1256 0.00      
16 B3g 617 597 0.00      
17 B3u 930 901 8.70      
18 B3u 262 254 71.21      

Unscaled Zero Point Vibrational Energy (zpe) 10900.9 cm-1
Scaled (by 0.9684) Zero Point Vibrational Energy (zpe) 10556.4 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
0.21359 0.19850 0.10288

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 1.305
C2 0.000 0.000 -1.305
N3 0.000 1.231 0.688
N4 0.000 -1.231 0.688
N5 0.000 -1.231 -0.688
N6 0.000 1.231 -0.688
H7 0.000 0.000 2.394
H8 0.000 0.000 -2.394

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.61041.37751.37752.34262.34261.08903.6994
C22.61042.34262.34261.37751.37753.69941.0890
N31.37752.34262.46272.82071.37532.10443.3187
N41.37752.34262.46271.37532.82072.10443.3187
N52.34261.37752.82071.37532.46273.31872.1044
N62.34261.37751.37532.82072.46273.31872.1044
H71.08903.69942.10442.10443.31873.31874.7884
H83.69941.08903.31873.31872.10442.10444.7884

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 116.634 C1 N4 N5 116.634
C2 N5 N4 116.634 C2 N6 N3 116.634
N3 C1 N4 126.732 N3 C1 H7 116.634
N4 C1 H7 116.634 N5 C2 N6 126.732
N5 C2 H8 116.634 N6 C2 H8 116.634
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 -0.486      
2 C -0.486      
3 N 0.101      
4 N 0.101      
5 N 0.101      
6 N 0.101      
7 H 0.284      
8 H 0.284      


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 -33.152 0.000 0.000
y 0.000 -47.766 0.000
z 0.000 0.000 -28.196
Traceless
 xyz
x 4.829 0.000 0.000
y 0.000 -17.092 0.000
z 0.000 0.000 12.263
Polar
3z2-r224.525
x2-y214.614
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.525 0.000 0.000
y 0.000 6.979 0.000
z 0.000 0.000 8.170


<r2> (average value of r2) Å2
<r2> 87.590
(<r2>)1/2 9.359