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

using model chemistry: mPW1PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at mPW1PW91/6-31G(2df,p)
 hartrees
Energy at 0K-296.263804
Energy at 298.15K-296.269043
Nuclear repulsion energy213.832601
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 mPW1PW91/6-31G(2df,p)
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 3233 3087 0.00      
2 Ag 1529 1460 0.00      
3 Ag 1078 1029 0.00      
4 Ag 761 727 0.00      
5 Au 349 333 0.00      
6 B1u 3231 3085 7.79      
7 B1u 1257 1200 63.09      
8 B1u 1108 1058 3.80      
9 B2g 1019 972 0.00      
10 B2g 848 810 0.00      
11 B2u 1496 1428 2.21      
12 B2u 1175 1122 9.17      
13 B2u 1034 987 38.33      
14 B3g 1601 1529 0.00      
15 B3g 1336 1276 0.00      
16 B3g 651 622 0.00      
17 B3u 945 902 0.58      
18 B3u 253 242 50.92      

Unscaled Zero Point Vibrational Energy (zpe) 11452.6 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 10933.8 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 mPW1PW91/6-31G(2df,p)
ABC
0.23087 0.21319 0.11084

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(2df,p)

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.256
C2 0.000 0.000 -1.256
N3 0.000 1.188 0.656
N4 0.000 -1.188 0.656
N5 0.000 -1.188 -0.656
N6 0.000 1.188 -0.656
H7 0.000 0.000 2.340
H8 0.000 0.000 -2.340

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.51171.33081.33082.25132.25131.08413.5958
C22.51172.25132.25131.33081.33083.59581.0841
N31.33082.25132.37632.71481.31272.06073.2233
N41.33082.25132.37631.31272.71482.06073.2233
N52.25131.33082.71481.31272.37633.22332.0607
N62.25131.33081.31272.71482.37633.22332.0607
H71.08413.59582.06072.06073.22333.22334.6799
H83.59581.08413.22333.22332.06072.06074.6799

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 116.775 C1 N4 N5 116.775
C2 N5 N4 116.775 C2 N6 N3 116.775
N3 C1 N4 126.450 N3 C1 H7 116.775
N4 C1 H7 116.775 N5 C2 N6 126.450
N5 C2 H8 116.775 N6 C2 H8 116.775
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.139      
2 C 0.139      
3 N -0.164      
4 N -0.164      
5 N -0.164      
6 N -0.164      
7 H 0.188      
8 H 0.188      


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 -32.086 0.000 0.000
y 0.000 -42.468 0.000
z 0.000 0.000 -27.379
Traceless
 xyz
x 2.838 0.000 0.000
y 0.000 -12.736 0.000
z 0.000 0.000 9.898
Polar
3z2-r219.796
x2-y210.382
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.494 0.000 0.000
y 0.000 6.736 0.000
z 0.000 0.000 8.022


<r2> (average value of r2) Å2
<r2> 102.688
(<r2>)1/2 10.134