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

using model chemistry: B3PW91/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at B3PW91/cc-pVDZ
 hartrees
Energy at 0K-296.227892
Energy at 298.15K-296.233077
Nuclear repulsion energy212.801877
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 B3PW91/cc-pVDZ
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 3216 3103 0.00      
2 Ag 1507 1454 0.00      
3 Ag 1064 1027 0.00      
4 Ag 756 730 0.00      
5 Au 332 320 0.00      
6 B1u 3214 3102 6.53      
7 B1u 1243 1200 58.05      
8 B1u 1100 1062 3.73      
9 B2g 995 960 0.00      
10 B2g 833 804 0.00      
11 B2u 1476 1424 2.04      
12 B2u 1164 1123 10.14      
13 B2u 1030 994 36.09      
14 B3g 1589 1534 0.00      
15 B3g 1314 1268 0.00      
16 B3g 645 622 0.00      
17 B3u 925 893 1.30      
18 B3u 242 234 52.92      

Unscaled Zero Point Vibrational Energy (zpe) 11321.8 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 10925.6 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 B3PW91/cc-pVDZ
ABC
0.22909 0.21079 0.10978

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVDZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.260
C2 0.000 0.000 -1.260
N3 0.000 1.195 0.659
N4 0.000 -1.195 0.659
N5 0.000 -1.195 -0.659
N6 0.000 1.195 -0.659
H7 0.000 0.000 2.353
H8 0.000 0.000 -2.353

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.51911.33721.33722.26062.26061.09313.6122
C22.51912.26062.26061.33721.33723.61221.0931
N31.33722.26062.38982.72951.31882.07243.2404
N41.33722.26062.38981.31882.72952.07243.2404
N52.26061.33722.72951.31882.38983.24042.0724
N62.26061.33721.31882.72952.38983.24042.0724
H71.09313.61222.07242.07243.24043.24044.7053
H83.61221.09313.24043.24042.07242.07244.7053

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 116.670 C1 N4 N5 116.670
C2 N5 N4 116.670 C2 N6 N3 116.670
N3 C1 N4 126.660 N3 C1 H7 116.670
N4 C1 H7 116.670 N5 C2 N6 126.660
N5 C2 H8 116.670 N6 C2 H8 116.670
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.169      
2 C 0.169      
3 N -0.121      
4 N -0.121      
5 N -0.121      
6 N -0.121      
7 H 0.073      
8 H 0.073      


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 -32.156 0.000 0.000
y 0.000 -42.901 0.000
z 0.000 0.000 -27.805
Traceless
 xyz
x 3.197 0.000 0.000
y 0.000 -12.920 0.000
z 0.000 0.000 9.724
Polar
3z2-r219.447
x2-y210.745
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.170 0.000 0.000
y 0.000 6.469 0.000
z 0.000 0.000 8.042


<r2> (average value of r2) Å2
<r2> 103.675
(<r2>)1/2 10.182