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

using model chemistry: B2PLYP/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 B2PLYP/6-31G*
 hartrees
Energy at 0K-296.041067
Energy at 298.15K-296.046242
HF Energy-295.739340
Nuclear repulsion energy211.896818
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 B2PLYP/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 3265 3099 0.00      
2 Ag 1467 1393 0.00      
3 Ag 1036 983 0.00      
4 Ag 755 717 0.00      
5 Au 341 324 0.00      
6 B1u 3263 3098 8.18      
7 B1u 1233 1171 62.31      
8 B1u 1099 1043 1.15      
9 B2g 993 942 0.00      
10 B2g 815 774 0.00      
11 B2u 1488 1412 4.25      
12 B2u 1158 1099 5.27      
13 B2u 1007 956 37.05      
14 B3g 1569 1489 0.00      
15 B3g 1341 1273 0.00      
16 B3g 647 614 0.00      
17 B3u 928 881 0.93      
18 B3u 260 247 54.78      

Unscaled Zero Point Vibrational Energy (zpe) 11332.4 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 10756.7 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 B2PLYP/6-31G*
ABC
0.22657 0.20941 0.10882

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.266
C2 0.000 0.000 -1.266
N3 0.000 1.199 0.665
N4 0.000 -1.199 0.665
N5 0.000 -1.199 -0.665
N6 0.000 1.199 -0.665
H7 0.000 0.000 2.350
H8 0.000 0.000 -2.350

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.53231.34091.34092.27332.27331.08403.6162
C22.53232.27332.27331.34091.34093.61621.0840
N31.34092.27332.39772.74221.33082.06773.2451
N41.34092.27332.39771.33082.74222.06773.2451
N52.27331.34092.74221.33082.39773.24512.0677
N62.27331.34091.33082.74222.39773.24512.0677
H71.08403.61622.06772.06773.24513.24514.7002
H83.61621.08403.24513.24512.06772.06774.7002

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 116.616 C1 N4 N5 116.616
C2 N5 N4 116.616 C2 N6 N3 116.616
N3 C1 N4 126.768 N3 C1 H7 116.616
N4 C1 H7 116.616 N5 C2 N6 126.768
N5 C2 H8 116.616 N6 C2 H8 116.616
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.204      
2 C 0.204      
3 N -0.213      
4 N -0.213      
5 N -0.213      
6 N -0.213      
7 H 0.223      
8 H 0.223      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.967 0.000 0.000
y 0.000 6.569 0.000
z 0.000 0.000 7.874


<r2> (average value of r2) Å2
<r2> 104.644
(<r2>)1/2 10.230