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

using model chemistry: HF/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at HF/6-311G*
 hartrees
Energy at 0K-294.653987
Energy at 298.15K-294.659600
Nuclear repulsion energy216.668376
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 HF/6-311G*
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 3419 3092 0.00      
2 Ag 1723 1558 0.00      
3 Ag 1170 1058 0.00      
4 Ag 826 747 0.00      
5 Au 449 406 0.00      
6 B1u 3417 3090 12.35      
7 B1u 1370 1239 76.68      
8 B1u 1195 1081 6.24      
9 B2g 1093 989 0.00      
10 B2g 900 814 0.00      
11 B2u 1643 1486 1.00      
12 B2u 1270 1148 25.28      
13 B2u 849 768 103.91      
14 B3g 1784 1614 0.00      
15 B3g 1444 1306 0.00      
16 B3g 706 639 0.00      
17 B3u 1028 930 1.98      
18 B3u 411 372 57.34      

Unscaled Zero Point Vibrational Energy (zpe) 12348.3 cm-1
Scaled (by 0.9044) Zero Point Vibrational Energy (zpe) 11167.8 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 HF/6-311G*
ABC
0.23532 0.22038 0.11380

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311G*

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.251
C2 0.000 0.000 -1.251
N3 0.000 1.169 0.644
N4 0.000 -1.169 0.644
N5 0.000 -1.169 -0.644
N6 0.000 1.169 -0.644
H7 0.000 0.000 2.322
H8 0.000 0.000 -2.322

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.50101.31661.31662.22612.22611.07133.5724
C22.50102.22612.22611.31661.31663.57241.0713
N31.31662.22612.33722.66871.28832.04463.1879
N41.31662.22612.33721.28832.66872.04463.1879
N52.22611.31662.66871.28832.33723.18792.0446
N62.22611.31661.28832.66872.33723.18792.0446
H71.07133.57242.04462.04463.18793.18794.6437
H83.57241.07133.18793.18792.04462.04464.6437

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 117.424 C1 N4 N5 117.424
C2 N5 N4 117.424 C2 N6 N3 117.424
N3 C1 N4 125.151 N3 C1 H7 117.424
N4 C1 H7 117.424 N5 C2 N6 125.151
N5 C2 H8 117.424 N6 C2 H8 117.424
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.076      
2 C 0.076      
3 N -0.176      
4 N -0.176      
5 N -0.176      
6 N -0.176      
7 H 0.276      
8 H 0.276      


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 -32.907 0.000 0.000
y 0.000 -44.365 0.000
z 0.000 0.000 -27.957
Traceless
 xyz
x 3.254 0.000 0.000
y 0.000 -13.933 0.000
z 0.000 0.000 10.679
Polar
3z2-r221.358
x2-y211.458
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.274 0.000 0.000
y 0.000 6.477 0.000
z 0.000 0.000 7.509


<r2> (average value of r2) Å2
<r2> 101.311
(<r2>)1/2 10.065