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

using model chemistry: B1B95/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at B1B95/6-31+G**
 hartrees
Energy at 0K-296.232641
Energy at 298.15K-296.237815
Nuclear repulsion energy213.409187
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 B1B95/6-31+G**
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 3245 3104 0.00      
2 Ag 1523 1457 0.00      
3 Ag 1071 1024 0.00      
4 Ag 751 719 0.00      
5 Au 331 317 0.00      
6 B1u 3244 3103 4.80      
7 B1u 1250 1196 56.89      
8 B1u 1094 1047 1.09      
9 B2g 993 950 0.00      
10 B2g 818 783 0.00      
11 B2u 1490 1426 1.21      
12 B2u 1171 1120 9.43      
13 B2u 1035 991 35.33      
14 B3g 1596 1527 0.00      
15 B3g 1331 1273 0.00      
16 B3g 640 612 0.00      
17 B3u 931 890 1.60      
18 B3u 246 235 57.63      

Unscaled Zero Point Vibrational Energy (zpe) 11380.6 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 10886.7 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 B1B95/6-31+G**
ABC
0.23002 0.21225 0.11039

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31+G**

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.259
C2 0.000 0.000 -1.259
N3 0.000 1.191 0.657
N4 0.000 -1.191 0.657
N5 0.000 -1.191 -0.657
N6 0.000 1.191 -0.657
H7 0.000 0.000 2.342
H8 0.000 0.000 -2.342

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.51711.33391.33392.25592.25591.08373.6008
C22.51712.25592.25591.33391.33393.60081.0837
N31.33392.25592.38162.72051.31502.06313.2274
N41.33392.25592.38161.31502.72052.06313.2274
N52.25591.33392.72051.31502.38163.22742.0631
N62.25591.33391.31502.72052.38163.22742.0631
H71.08373.60082.06312.06313.22743.22744.6845
H83.60081.08373.22743.22742.06312.06314.6845

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 116.784 C1 N4 N5 116.784
C2 N5 N4 116.784 C2 N6 N3 116.784
N3 C1 N4 126.433 N3 C1 H7 116.784
N4 C1 H7 116.784 N5 C2 N6 126.433
N5 C2 H8 116.784 N6 C2 H8 116.784
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.038      
2 C -0.038      
3 N -0.072      
4 N -0.072      
5 N -0.072      
6 N -0.072      
7 H 0.182      
8 H 0.182      


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 -32.825 0.000 0.000
y 0.000 -44.432 0.000
z 0.000 0.000 -28.270
Traceless
 xyz
x 3.526 0.000 0.000
y 0.000 -13.884 0.000
z 0.000 0.000 10.358
Polar
3z2-r220.716
x2-y211.606
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.259 0.000 0.000
y 0.000 7.818 0.000
z 0.000 0.000 8.604


<r2> (average value of r2) Å2
<r2> 103.758
(<r2>)1/2 10.186