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

using model chemistry: HF/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at HF/6-31G*
 hartrees
Energy at 0K-294.592926
Energy at 298.15K-294.598536
Nuclear repulsion energy216.354137
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/6-31G*
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 3447 3097 0.00      
2 Ag 1733 1557 0.00      
3 Ag 1178 1058 0.00      
4 Ag 825 742 0.00      
5 Au 451 405 0.00      
6 B1u 3445 3095 9.27      
7 B1u 1380 1240 79.95      
8 B1u 1191 1070 6.42      
9 B2g 1103 991 0.00      
10 B2g 898 807 0.00      
11 B2u 1647 1480 0.99      
12 B2u 1274 1145 23.59      
13 B2u 886 796 99.92      
14 B3g 1792 1610 0.00      
15 B3g 1449 1302 0.00      
16 B3g 707 635 0.00      
17 B3u 1035 930 1.17      
18 B3u 409 368 57.79      

Unscaled Zero Point Vibrational Energy (zpe) 12424.9 cm-1
Scaled (by 0.8985) Zero Point Vibrational Energy (zpe) 11163.8 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/6-31G*
ABC
0.23445 0.21990 0.11347

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G*

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.253
C2 0.000 0.000 -1.253
N3 0.000 1.170 0.645
N4 0.000 -1.170 0.645
N5 0.000 -1.170 -0.645
N6 0.000 1.170 -0.645
H7 0.000 0.000 2.324
H8 0.000 0.000 -2.324

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.50611.31831.31832.23002.23001.07123.5773
C22.50612.23002.23001.31831.31833.57731.0712
N31.31832.23002.33982.67221.29082.04633.1917
N41.31832.23002.33981.29082.67222.04633.1917
N52.23001.31832.67221.29082.33983.19172.0463
N62.23001.31831.29082.67222.33983.19172.0463
H71.07123.57732.04632.04633.19173.19174.6485
H83.57731.07123.19173.19172.04632.04634.6485

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 117.449 C1 N4 N5 117.449
C2 N5 N4 117.449 C2 N6 N3 117.449
N3 C1 N4 125.101 N3 C1 H7 117.449
N4 C1 H7 117.449 N5 C2 N6 125.101
N5 C2 H8 117.449 N6 C2 H8 117.449
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.210      
2 C 0.210      
3 N -0.232      
4 N -0.232      
5 N -0.232      
6 N -0.232      
7 H 0.255      
8 H 0.255      


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 -32.865 0.000 0.000
y 0.000 -44.219 0.000
z 0.000 0.000 -27.822
Traceless
 xyz
x 3.155 0.000 0.000
y 0.000 -13.875 0.000
z 0.000 0.000 10.720
Polar
3z2-r221.441
x2-y211.354
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.917 0.000 0.000
y 0.000 6.324 0.000
z 0.000 0.000 7.364


<r2> (average value of r2) Å2
<r2> 101.471
(<r2>)1/2 10.073