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

using model chemistry: HF/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 HF/cc-pVDZ
 hartrees
Energy at 0K-294.619871
Energy at 298.15K-294.625506
Nuclear repulsion energy216.229565
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 HF/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 3411 3097 0.00      
2 Ag 1730 1571 0.00      
3 Ag 1177 1068 0.00      
4 Ag 824 748 0.00      
5 Au 449 408 0.00      
6 B1u 3409 3095 6.03      
7 B1u 1375 1248 74.97      
8 B1u 1194 1085 9.26      
9 B2g 1098 997 0.00      
10 B2g 902 819 0.00      
11 B2u 1635 1485 0.84      
12 B2u 1268 1151 24.53      
13 B2u 889 807 100.07      
14 B3g 1794 1629 0.00      
15 B3g 1430 1298 0.00      
16 B3g 707 642 0.00      
17 B3u 1030 936 1.92      
18 B3u 410 373 55.33      

Unscaled Zero Point Vibrational Energy (zpe) 12366.3 cm-1
Scaled (by 0.908) Zero Point Vibrational Energy (zpe) 11228.6 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 HF/cc-pVDZ
ABC
0.23479 0.21916 0.11335

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.251
C2 0.000 0.000 -1.251
N3 0.000 1.172 0.645
N4 0.000 -1.172 0.645
N5 0.000 -1.172 -0.645
N6 0.000 1.172 -0.645
H7 0.000 0.000 2.330
H8 0.000 0.000 -2.330

Atom - Atom Distances (Å)
  C1 C2 N3 N4 N5 N6 H7 H8
C12.50231.31941.31942.22892.22891.07913.5814
C22.50232.22892.22891.31941.31943.58141.0791
N31.31942.22892.34372.67511.28962.05283.1975
N41.31942.22892.34371.28962.67512.05283.1975
N52.22891.31942.67511.28962.34373.19752.0528
N62.22891.31941.28962.67512.34373.19752.0528
H71.07913.58142.05282.05283.19753.19754.6604
H83.58141.07913.19753.19752.05282.05284.6604

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 117.359 C1 N4 N5 117.359
C2 N5 N4 117.359 C2 N6 N3 117.359
N3 C1 N4 125.282 N3 C1 H7 117.359
N4 C1 H7 117.359 N5 C2 N6 125.282
N5 C2 H8 117.359 N6 C2 H8 117.359
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.244      
2 C 0.244      
3 N -0.163      
4 N -0.163      
5 N -0.163      
6 N -0.163      
7 H 0.082      
8 H 0.082      


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 -32.781 0.000 0.000
y 0.000 -43.839 0.000
z 0.000 0.000 -27.870
Traceless
 xyz
x 3.074 0.000 0.000
y 0.000 -13.514 0.000
z 0.000 0.000 10.440
Polar
3z2-r220.881
x2-y211.058
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.102 0.000 0.000
y 0.000 6.240 0.000
z 0.000 0.000 7.508


<r2> (average value of r2) Å2
<r2> 101.490
(<r2>)1/2 10.074