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

using model chemistry: B1B95/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 B1B95/cc-pVDZ
 hartrees
Energy at 0K-296.245769
Energy at 298.15K-296.250959
Nuclear repulsion energy213.326315
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/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 3223 3098 0.00      
2 Ag 1520 1461 0.00      
3 Ag 1072 1030 0.00      
4 Ag 751 722 0.00      
5 Au 332 319 0.00      
6 B1u 3222 3097 7.04      
7 B1u 1249 1200 57.97      
8 B1u 1098 1056 4.77      
9 B2g 997 958 0.00      
10 B2g 834 801 0.00      
11 B2u 1483 1425 1.67      
12 B2u 1171 1125 10.02      
13 B2u 1035 995 35.57      
14 B3g 1605 1542 0.00      
15 B3g 1316 1265 0.00      
16 B3g 638 613 0.00      
17 B3u 926 890 1.10      
18 B3u 246 237 51.02      

Unscaled Zero Point Vibrational Energy (zpe) 11358.0 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 10917.3 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/cc-pVDZ
ABC
0.23046 0.21163 0.11032

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/cc-pVDZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.255
C2 0.000 0.000 -1.255
N3 0.000 1.193 0.658
N4 0.000 -1.193 0.658
N5 0.000 -1.193 -0.658
N6 0.000 1.193 -0.658
H7 0.000 0.000 2.346
H8 0.000 0.000 -2.346

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.51061.33391.33392.25432.25431.09113.6017
C22.51062.25432.25431.33391.33393.60171.0911
N31.33392.25432.38512.72381.31542.06733.2322
N41.33392.25432.38511.31542.72382.06733.2322
N52.25431.33392.72381.31542.38513.23222.0673
N62.25431.33391.31542.72382.38513.23222.0673
H71.09113.60172.06732.06733.23223.23224.6928
H83.60171.09113.23223.23222.06732.06734.6928

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 116.616 C1 N4 N5 116.616
C2 N5 N4 116.616 C2 N6 N3 116.616
N3 C1 N4 126.767 N3 C1 H7 116.616
N4 C1 H7 116.616 N5 C2 N6 126.767
N5 C2 H8 116.616 N6 C2 H8 116.616
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.174      
2 C 0.174      
3 N -0.116      
4 N -0.116      
5 N -0.116      
6 N -0.116      
7 H 0.059      
8 H 0.059      


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 -32.103 0.000 0.000
y 0.000 -42.701 0.000
z 0.000 0.000 -27.908
Traceless
 xyz
x 3.201 0.000 0.000
y 0.000 -12.696 0.000
z 0.000 0.000 9.494
Polar
3z2-r218.989
x2-y210.598
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.154 0.000 0.000
y 0.000 6.421 0.000
z 0.000 0.000 8.000


<r2> (average value of r2) Å2
<r2> 103.238
(<r2>)1/2 10.161