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

using model chemistry: B1B95/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at B1B95/STO-3G
 hartrees
Energy at 0K-292.425369
Energy at 298.15K-292.429915
Nuclear repulsion energy203.638439
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 B1B95/STO-3G
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 3447 3044 0.00      
2 Ag 1400 1236 0.00      
3 Ag 1001 884 0.00      
4 Ag 704 621 0.00      
5 Au 262 231 0.00      
6 B1u 3444 3041 29.37      
7 B1u 1177 1039 61.05      
8 B1u 1053 930 0.02      
9 B2g 977 863 0.00      
10 B2g 783 691 0.00      
11 B2u 1474 1302 44.49      
12 B2u 1118 987 1.27      
13 B2u 785 693 11.10      
14 B3g 1532 1353 0.00      
15 B3g 1311 1158 0.00      
16 B3g 619 547 0.00      
17 B3u 898 793 0.92      
18 B3u 211 186 30.18      

Unscaled Zero Point Vibrational Energy (zpe) 11097.9 cm-1
Scaled (by 0.883) Zero Point Vibrational Energy (zpe) 9799.4 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 B1B95/STO-3G
ABC
0.21352 0.18949 0.10039

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/STO-3G

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.288
C2 0.000 0.000 -1.288
N3 0.000 1.260 0.702
N4 0.000 -1.260 0.702
N5 0.000 -1.260 -0.702
N6 0.000 1.260 -0.702
H7 0.000 0.000 2.392
H8 0.000 0.000 -2.392

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.57541.38961.38962.35552.35551.10403.6794
C22.57542.35552.35551.38961.38963.67941.1040
N31.38962.35552.52052.88551.40462.10773.3408
N41.38962.35552.52051.40462.88552.10773.3408
N52.35551.38962.88551.40462.52053.34082.1077
N62.35551.38961.40462.88552.52053.34082.1077
H71.10403.67942.10772.10773.34083.34084.7834
H83.67941.10403.34083.34082.10772.10774.7834

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 114.915 C1 N4 N5 114.915
C2 N5 N4 114.915 C2 N6 N3 114.915
N3 C1 N4 130.169 N3 C1 H7 114.915
N4 C1 H7 114.915 N5 C2 N6 130.169
N5 C2 H8 114.915 N6 C2 H8 114.915
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.064      
2 C 0.064      
3 N -0.097      
4 N -0.097      
5 N -0.097      
6 N -0.097      
7 H 0.130      
8 H 0.130      


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 -29.976 0.000 0.000
y 0.000 -41.348 0.000
z 0.000 0.000 -27.640
Traceless
 xyz
x 4.517 0.000 0.000
y 0.000 -12.539 0.000
z 0.000 0.000 8.022
Polar
3z2-r216.044
x2-y211.371
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.386 0.000 0.000
y 0.000 4.204 0.000
z 0.000 0.000 5.756


<r2> (average value of r2) Å2
<r2> 110.224
(<r2>)1/2 10.499