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

using model chemistry: B3LYP/cc-pVQZ

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/cc-pVQZ
 hartrees
Energy at 0K-296.447496
Energy at 298.15K-296.452730
Nuclear repulsion energy213.488920
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/cc-pVQZ
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 3197 3098 0.00      
2 Ag 1477 1431 0.00      
3 Ag 1052 1019 0.00      
4 Ag 756 733 0.00      
5 Au 356 345 0.00      
6 B1u 3196 3096 6.63      
7 B1u 1237 1199 63.13      
8 B1u 1103 1069 0.77      
9 B2g 1011 980 0.00      
10 B2g 838 812 0.00      
11 B2u 1481 1434 2.33      
12 B2u 1150 1114 9.28      
13 B2u 967 937 35.44      
14 B3g 1559 1510 0.00      
15 B3g 1331 1289 0.00      
16 B3g 656 636 0.00      
17 B3u 940 911 1.25      
18 B3u 259 251 53.56      

Unscaled Zero Point Vibrational Energy (zpe) 11282.8 cm-1
Scaled (by 0.9688) Zero Point Vibrational Energy (zpe) 10930.8 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/cc-pVQZ
ABC
0.22914 0.21337 0.11049

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/cc-pVQZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.262
C2 0.000 0.000 -1.262
N3 0.000 1.188 0.658
N4 0.000 -1.188 0.658
N5 0.000 -1.188 -0.658
N6 0.000 1.188 -0.658
H7 0.000 0.000 2.343
H8 0.000 0.000 -2.343

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.52391.33221.33222.25802.25801.08123.6051
C22.52392.25802.25801.33221.33223.60511.0812
N31.33222.25802.37532.71591.31682.06133.2280
N41.33222.25802.37531.31682.71592.06133.2280
N52.25801.33222.71591.31682.37533.22802.0613
N62.25801.33221.31682.71592.37533.22802.0613
H71.08123.60512.06132.06133.22803.22804.6863
H83.60511.08123.22803.22802.06132.06134.6863

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 116.939 C1 N4 N5 116.939
C2 N5 N4 116.939 C2 N6 N3 116.939
N3 C1 N4 126.121 N3 C1 H7 116.939
N4 C1 H7 116.939 N5 C2 N6 126.121
N5 C2 H8 116.939 N6 C2 H8 116.939
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.109      
2 C 0.109      
3 N -0.141      
4 N -0.141      
5 N -0.141      
6 N -0.141      
7 H 0.173      
8 H 0.173      


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 -32.748 0.000 0.000
y 0.000 -43.982 0.000
z 0.000 0.000 -28.279
Traceless
 xyz
x 3.382 0.000 0.000
y 0.000 -13.468 0.000
z 0.000 0.000 10.086
Polar
3z2-r220.172
x2-y211.233
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.379 0.000 0.000
y 0.000 7.707 0.000
z 0.000 0.000 8.802


<r2> (average value of r2) Å2
<r2> 103.586
(<r2>)1/2 10.178