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

using model chemistry: B1B95/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at B1B95/6-31G*
 hartrees
Energy at 0K-296.220073
Energy at 298.15K-296.225234
Nuclear repulsion energy213.312192
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 B1B95/6-31G*
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 3249 3084 0.00      
2 Ag 1519 1442 0.00      
3 Ag 1071 1016 0.00      
4 Ag 753 715 0.00      
5 Au 333 316 0.00      
6 B1u 3248 3083 9.96      
7 B1u 1251 1188 59.89      
8 B1u 1095 1039 2.77      
9 B2g 998 947 0.00      
10 B2g 827 786 0.00      
11 B2u 1498 1422 2.02      
12 B2u 1175 1115 10.22      
13 B2u 1029 977 35.16      
14 B3g 1601 1520 0.00      
15 B3g 1338 1270 0.00      
16 B3g 639 607 0.00      
17 B3u 928 881 0.91      
18 B3u 246 234 53.73      

Unscaled Zero Point Vibrational Energy (zpe) 11398.1 cm-1
Scaled (by 0.9493) 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 B1B95/6-31G*
ABC
0.22996 0.21195 0.11029

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G*

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.258
C2 0.000 0.000 -1.258
N3 0.000 1.192 0.659
N4 0.000 -1.192 0.659
N5 0.000 -1.192 -0.659
N6 0.000 1.192 -0.659
H7 0.000 0.000 2.342
H8 0.000 0.000 -2.342

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.51501.33371.33372.25652.25651.08463.5996
C22.51502.25652.25651.33371.33373.59961.0846
N31.33372.25652.38332.72311.31732.06253.2287
N41.33372.25652.38331.31732.72312.06253.2287
N52.25651.33372.72311.31732.38333.22872.0625
N62.25651.33371.31732.72312.38333.22872.0625
H71.08463.59962.06252.06253.22873.22874.6841
H83.59961.08463.22873.22872.06252.06254.6841

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 116.682 C1 N4 N5 116.682
C2 N5 N4 116.682 C2 N6 N3 116.682
N3 C1 N4 126.635 N3 C1 H7 116.682
N4 C1 H7 116.682 N5 C2 N6 126.635
N5 C2 H8 116.682 N6 C2 H8 116.682
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.177      
2 C 0.177      
3 N -0.197      
4 N -0.197      
5 N -0.197      
6 N -0.197      
7 H 0.216      
8 H 0.216      


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 -32.245 0.000 0.000
y 0.000 -43.056 0.000
z 0.000 0.000 -27.730
Traceless
 xyz
x 3.148 0.000 0.000
y 0.000 -13.068 0.000
z 0.000 0.000 9.920
Polar
3z2-r219.841
x2-y210.810
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.987 0.000 0.000
y 0.000 6.526 0.000
z 0.000 0.000 7.827


<r2> (average value of r2) Å2
<r2> 103.303
(<r2>)1/2 10.164