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

using model chemistry: B3LYP/TZVP

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/TZVP
 hartrees
Energy at 0K-296.413032
Energy at 298.15K-296.418213
HF Energy-296.413032
Nuclear repulsion energy213.153628
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/TZVP
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 3211 3100 0.00      
2 Ag 1467 1417 0.00      
3 Ag 1045 1009 0.00      
4 Ag 760 734 0.00      
5 Au 341 329 0.00      
6 B1u 3209 3098 5.45      
7 B1u 1233 1191 58.28      
8 B1u 1097 1059 0.09      
9 B2g 953 920 0.00      
10 B2g 795 767 0.00      
11 B2u 1482 1431 2.53      
12 B2u 1150 1110 12.01      
13 B2u 950 917 34.73      
14 B3g 1554 1500 0.00      
15 B3g 1336 1290 0.00      
16 B3g 653 630 0.00      
17 B3u 923 891 1.28      
18 B3u 258 249 58.54      

Unscaled Zero Point Vibrational Energy (zpe) 11208.1 cm-1
Scaled (by 0.9654) Zero Point Vibrational Energy (zpe) 10820.3 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/TZVP
ABC
0.22861 0.21253 0.11014

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.263
C2 0.000 0.000 -1.263
N3 0.000 1.190 0.660
N4 0.000 -1.190 0.660
N5 0.000 -1.190 -0.660
N6 0.000 1.190 -0.660
H7 0.000 0.000 2.345
H8 0.000 0.000 -2.345

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.52561.33411.33412.26112.26111.08223.6078
C22.52562.26112.26111.33411.33413.60781.0822
N31.33412.26112.38002.72141.31962.06303.2319
N41.33412.26112.38001.31962.72142.06303.2319
N52.26111.33412.72141.31962.38003.23192.0630
N62.26111.33411.31962.72142.38003.23192.0630
H71.08223.60782.06302.06303.23193.23194.6900
H83.60781.08223.23193.23192.06302.06304.6900

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 116.872 C1 N4 N5 116.872
C2 N5 N4 116.872 C2 N6 N3 116.872
N3 C1 N4 126.255 N3 C1 H7 116.872
N4 C1 H7 116.872 N5 C2 N6 126.255
N5 C2 H8 116.872 N6 C2 H8 116.872
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.086      
2 C -0.086      
3 N -0.035      
4 N -0.035      
5 N -0.035      
6 N -0.035      
7 H 0.155      
8 H 0.155      


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 -32.728 0.000 0.000
y 0.000 -44.846 0.000
z 0.000 0.000 -28.556
Traceless
 xyz
x 3.973 0.000 0.000
y 0.000 -14.204 0.000
z 0.000 0.000 10.231
Polar
3z2-r220.461
x2-y212.118
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.095 0.000 0.000
y 0.000 7.452 0.000
z 0.000 0.000 8.489


<r2> (average value of r2) Å2
<r2> 104.070
(<r2>)1/2 10.201