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

using model chemistry: B3LYP/CEP-121G*

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/CEP-121G*
 hartrees
Energy at 0K-52.025941
Energy at 298.15K-52.031091
Nuclear repulsion energy107.191558
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/CEP-121G*
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 3197 3099 0.00      
2 Ag 1460 1416 0.00      
3 Ag 1025 993 0.00      
4 Ag 739 717 0.00      
5 Au 341 331 0.00      
6 B1u 3196 3098 14.70      
7 B1u 1210 1173 59.19      
8 B1u 1074 1041 0.50      
9 B2g 972 942 0.00      
10 B2g 804 780 0.00      
11 B2u 1467 1422 2.10      
12 B2u 1133 1098 12.14      
13 B2u 962 932 35.53      
14 B3g 1539 1492 0.00      
15 B3g 1318 1278 0.00      
16 B3g 637 617 0.00      
17 B3u 911 883 2.92      
18 B3u 264 256 54.65      

Unscaled Zero Point Vibrational Energy (zpe) 11124.1 cm-1
Scaled (by 0.9694) Zero Point Vibrational Energy (zpe) 10783.7 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 B3LYP/CEP-121G*
ABC
0.22450 0.20756 0.10785

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G*

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.273
C2 0.000 0.000 -1.273
N3 0.000 1.204 0.668
N4 0.000 -1.204 0.668
N5 0.000 -1.204 -0.668
N6 0.000 1.204 -0.668
H7 0.000 0.000 2.361
H8 0.000 0.000 -2.361

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.54541.34761.34762.28372.28371.08853.6339
C22.54542.28372.28371.34761.34763.63391.0885
N31.34762.28372.40832.75381.33552.07793.2596
N41.34762.28372.40831.33552.75382.07793.2596
N52.28371.34762.75381.33552.40833.25962.0779
N62.28371.34761.33552.75382.40833.25962.0779
H71.08853.63392.07792.07793.25963.25964.7224
H83.63391.08853.25963.25962.07792.07794.7224

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 116.673 C1 N4 N5 116.673
C2 N5 N4 116.673 C2 N6 N3 116.673
N3 C1 N4 126.655 N3 C1 H7 116.673
N4 C1 H7 116.673 N5 C2 N6 126.655
N5 C2 H8 116.673 N6 C2 H8 116.673
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.250      
2 C -0.250      
3 N 0.018      
4 N 0.018      
5 N 0.018      
6 N 0.018      
7 H 0.213      
8 H 0.213      


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 -32.632 0.000 0.000
y 0.000 -44.057 0.000
z 0.000 0.000 -28.025
Traceless
 xyz
x 3.409 0.000 0.000
y 0.000 -13.728 0.000
z 0.000 0.000 10.319
Polar
3z2-r220.638
x2-y211.424
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.810 0.000 0.000
y 0.000 7.180 0.000
z 0.000 0.000 8.534


<r2> (average value of r2) Å2
<r2> 83.827
(<r2>)1/2 9.156