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

using model chemistry: PBEPBE/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at PBEPBE/cc-pVTZ
 hartrees
Energy at 0K-296.096831
Energy at 298.15K-296.101697
Nuclear repulsion energy211.683275
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 PBEPBE/cc-pVTZ
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 3112 3091 0.00      
2 Ag 1400 1390 0.00      
3 Ag 1011 1004 0.00      
4 Ag 729 724 0.00      
5 Au 289 287 0.00      
6 B1u 3111 3090 11.04      
7 B1u 1188 1180 56.96      
8 B1u 1064 1057 0.45      
9 B2g 971 964 0.00      
10 B2g 813 807 0.00      
11 B2u 1421 1411 3.03      
12 B2u 1116 1108 6.78      
13 B2u 956 950 26.84      
14 B3g 1493 1482 0.00      
15 B3g 1280 1271 0.00      
16 B3g 629 625 0.00      
17 B3u 897 891 1.45      
18 B3u 119 118 54.19      

Unscaled Zero Point Vibrational Energy (zpe) 10798.7 cm-1
Scaled (by 0.9931) Zero Point Vibrational Energy (zpe) 10724.2 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 PBEPBE/cc-pVTZ
ABC
0.22677 0.20847 0.10862

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/cc-pVTZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.264
C2 0.000 0.000 -1.264
N3 0.000 1.202 0.665
N4 0.000 -1.202 0.665
N5 0.000 -1.202 -0.665
N6 0.000 1.202 -0.665
H7 0.000 0.000 2.356
H8 0.000 0.000 -2.356

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.52841.34251.34252.27302.27301.09183.6202
C22.52842.27302.27301.34251.34253.62021.0918
N31.34252.27302.40312.74691.33062.07423.2514
N41.34252.27302.40311.33062.74692.07423.2514
N52.27301.34252.74691.33062.40313.25142.0742
N62.27301.34251.33062.74692.40313.25142.0742
H71.09183.62022.07422.07423.25143.25144.7120
H83.62021.09183.25143.25142.07422.07424.7120

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 116.495 C1 N4 N5 116.495
C2 N5 N4 116.495 C2 N6 N3 116.495
N3 C1 N4 127.010 N3 C1 H7 116.495
N4 C1 H7 116.495 N5 C2 N6 127.010
N5 C2 H8 116.495 N6 C2 H8 116.495
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.015      
2 C 0.015      
3 N -0.072      
4 N -0.072      
5 N -0.072      
6 N -0.072      
7 H 0.129      
8 H 0.129      


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 -32.593 0.000 0.000
y 0.000 -43.434 0.000
z 0.000 0.000 -28.272
Traceless
 xyz
x 3.260 0.000 0.000
y 0.000 -13.001 0.000
z 0.000 0.000 9.741
Polar
3z2-r219.482
x2-y210.841
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.057 0.000 0.000
y 0.000 7.446 0.000
z 0.000 0.000 8.833


<r2> (average value of r2) Å2
<r2> 104.811
(<r2>)1/2 10.238