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

using model chemistry: B3LYP/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at B3LYP/CEP-121G
 hartrees
Energy at 0K-51.897170
Energy at 298.15K-51.902244
Nuclear repulsion energy105.121132
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 B3LYP/CEP-121G
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 3227 3145 0.00      
2 Ag 1374 1339 0.00      
3 Ag 961 937 0.00      
4 Ag 716 698 0.00      
5 Au 340 331 0.00      
6 B1u 3225 3143 4.57      
7 B1u 1161 1131 54.41      
8 B1u 1016 991 4.16      
9 B2g 942 918 0.00      
10 B2g 781 761 0.00      
11 B2u 1433 1396 15.68      
12 B2u 1067 1040 3.35      
13 B2u 877 855 23.64      
14 B3g 1463 1425 0.00      
15 B3g 1298 1265 0.00      
16 B3g 621 605 0.00      
17 B3u 907 884 5.48      
18 B3u 256 249 69.69      

Unscaled Zero Point Vibrational Energy (zpe) 10831.7 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 10555.5 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 B3LYP/CEP-121G
ABC
0.21400 0.20075 0.10358

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.305
C2 0.000 0.000 -1.305
N3 0.000 1.224 0.687
N4 0.000 -1.224 0.687
N5 0.000 -1.224 -0.687
N6 0.000 1.224 -0.687
H7 0.000 0.000 2.388
H8 0.000 0.000 -2.388

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.60941.37151.37152.33782.33781.08343.6928
C22.60942.33782.33781.37151.37153.69281.0834
N31.37152.33782.44882.80781.37372.09603.3098
N41.37152.33782.44881.37372.80782.09603.3098
N52.33781.37152.80781.37372.44883.30982.0960
N62.33781.37151.37372.80782.44883.30982.0960
H71.08343.69282.09602.09603.30983.30984.7762
H83.69281.08343.30983.30982.09602.09604.7762

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 126.449 N3 C1 H7 116.775
N4 C1 H7 116.775 N5 C2 N6 126.449
N5 C2 H8 116.775 N6 C2 H8 116.775
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.307      
2 C -0.307      
3 N 0.048      
4 N 0.048      
5 N 0.048      
6 N 0.048      
7 H 0.210      
8 H 0.210      


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 -33.085 0.000 0.000
y 0.000 -47.438 0.000
z 0.000 0.000 -28.576
Traceless
 xyz
x 4.922 0.000 0.000
y 0.000 -16.607 0.000
z 0.000 0.000 11.686
Polar
3z2-r223.371
x2-y214.353
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.754 0.000 0.000
y 0.000 7.183 0.000
z 0.000 0.000 8.647


<r2> (average value of r2) Å2
<r2> 87.157
(<r2>)1/2 9.336