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

using model chemistry: BLYP/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 BLYP/6-31G(2df,p)
 hartrees
Energy at 0K-296.271213
Energy at 298.15K-296.276116
Nuclear repulsion energy210.439470
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 BLYP/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 3114 3097 0.00      
2 Ag 1372 1364 0.00      
3 Ag 990 985 0.00      
4 Ag 729 725 0.00      
5 Au 300 299 0.00      
6 B1u 3112 3095 14.37      
7 B1u 1171 1165 57.55      
8 B1u 1060 1054 0.60      
9 B2g 976 970 0.00      
10 B2g 807 803 0.00      
11 B2u 1418 1411 3.32      
12 B2u 1104 1098 6.42      
13 B2u 921 916 24.82      
14 B3g 1468 1460 0.00      
15 B3g 1284 1277 0.00      
16 B3g 630 626 0.00      
17 B3u 901 896 0.28      
18 B3u 152 151 48.49      

Unscaled Zero Point Vibrational Energy (zpe) 10753.7 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 10694.6 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 BLYP/6-31G(2df,p)
ABC
0.22384 0.20623 0.10734

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.272
C2 0.000 0.000 -1.272
N3 0.000 1.208 0.671
N4 0.000 -1.208 0.671
N5 0.000 -1.208 -0.671
N6 0.000 1.208 -0.671
H7 0.000 0.000 2.364
H8 0.000 0.000 -2.364

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.54381.34931.34932.28782.28781.09263.6364
C22.54382.28782.28781.34931.34933.63641.0926
N31.34932.28782.41612.76371.34192.08033.2670
N41.34932.28782.41611.34192.76372.08033.2670
N52.28781.34932.76371.34192.41613.26702.0803
N62.28781.34931.34192.76372.41613.26702.0803
H71.09263.63642.08032.08033.26703.26704.7290
H83.63641.09263.26703.26702.08032.08034.7290

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 116.449 C1 N4 N5 116.449
C2 N5 N4 116.449 C2 N6 N3 116.449
N3 C1 N4 127.103 N3 C1 H7 116.449
N4 C1 H7 116.449 N5 C2 N6 127.103
N5 C2 H8 116.449 N6 C2 H8 116.449
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.161      
2 C 0.161      
3 N -0.149      
4 N -0.149      
5 N -0.149      
6 N -0.149      
7 H 0.137      
8 H 0.137      


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 -32.136 0.000 0.000
y 0.000 -42.694 0.000
z 0.000 0.000 -28.066
Traceless
 xyz
x 3.244 0.000 0.000
y 0.000 -12.593 0.000
z 0.000 0.000 9.348
Polar
3z2-r218.696
x2-y210.558
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.498 0.000 0.000
y 0.000 6.928 0.000
z 0.000 0.000 8.452


<r2> (average value of r2) Å2
<r2> 105.484
(<r2>)1/2 10.271