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

using model chemistry: B1B95/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-296.322130
Energy at 298.15K-296.327340
Nuclear repulsion energy214.323654
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/aug-cc-pVTZ
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 3214 3081 0.00      
2 Ag 1508 1446 0.00      
3 Ag 1071 1026 0.00      
4 Ag 749 718 0.00      
5 Au 344 330 0.00      
6 B1u 3213 3080 6.70      
7 B1u 1248 1196 62.20      
8 B1u 1097 1051 1.65      
9 B2g 1010 968 0.00      
10 B2g 840 805 0.00      
11 B2u 1486 1425 1.65      
12 B2u 1165 1117 8.08      
13 B2u 1005 963 35.49      
14 B3g 1588 1522 0.00      
15 B3g 1329 1274 0.00      
16 B3g 641 615 0.00      
17 B3u 938 899 1.26      
18 B3u 244 234 52.70      

Unscaled Zero Point Vibrational Energy (zpe) 11344.3 cm-1
Scaled (by 0.9585) Zero Point Vibrational Energy (zpe) 10873.5 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 B1B95/aug-cc-pVTZ
ABC
0.23162 0.21445 0.11135

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.254
C2 0.000 0.000 -1.254
N3 0.000 1.185 0.655
N4 0.000 -1.185 0.655
N5 0.000 -1.185 -0.655
N6 0.000 1.185 -0.655
H7 0.000 0.000 2.335
H8 0.000 0.000 -2.335

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.50891.32771.32772.24702.24701.08073.5896
C22.50892.24702.24701.32771.32773.58961.0807
N31.32772.24702.36932.70731.30982.05593.2162
N41.32772.24702.36931.30982.70732.05593.2162
N52.24701.32772.70731.30982.36933.21622.0559
N62.24701.32771.30982.70732.36933.21622.0559
H71.08073.58962.05592.05593.21623.21624.6703
H83.58961.08073.21623.21622.05592.05594.6703

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 116.844 C1 N4 N5 116.844
C2 N5 N4 116.844 C2 N6 N3 116.844
N3 C1 N4 126.313 N3 C1 H7 116.844
N4 C1 H7 116.844 N5 C2 N6 126.313
N5 C2 H8 116.844 N6 C2 H8 116.844
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.194      
2 C -0.194      
3 N -0.223      
4 N -0.223      
5 N -0.223      
6 N -0.223      
7 H 0.640      
8 H 0.640      


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 -32.634 0.000 0.000
y 0.000 -43.598 0.000
z 0.000 0.000 -28.059
Traceless
 xyz
x 3.194 0.000 0.000
y 0.000 -13.252 0.000
z 0.000 0.000 10.057
Polar
3z2-r220.115
x2-y210.964
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.681 0.000 0.000
y 0.000 8.028 0.000
z 0.000 0.000 8.932


<r2> (average value of r2) Å2
<r2> 102.808
(<r2>)1/2 10.139