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All results from a given calculation for C4H4N2 (1,3-Diazine)

using model chemistry: B3LYP/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3LYP/6-311+G(3df,2p)
 hartrees
Energy at 0K-264.413489
Energy at 298.15K-264.419401
Nuclear repulsion energy209.540083
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/6-311+G(3df,2p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3195 3089 8.62      
2 A1 3161 3057 13.17      
3 A1 3146 3043 13.96      
4 A1 1610 1557 44.89      
5 A1 1440 1393 58.37      
6 A1 1165 1126 1.61      
7 A1 1083 1047 1.08      
8 A1 1012 979 3.77      
9 A1 697 674 2.87      
10 A2 1007 974 0.00      
11 A2 409 396 0.00      
12 B1 1034 1000 0.00      
13 B1 990 958 0.06      
14 B1 827 800 5.19      
15 B1 740 716 40.37      
16 B1 352 341 3.52      
17 B2 3150 3046 17.98      
18 B2 1609 1556 84.20      
19 B2 1498 1449 5.90      
20 B2 1399 1353 0.29      
21 B2 1255 1213 8.74      
22 B2 1215 1175 4.78      
23 B2 1096 1060 2.77      
24 B2 636 615 11.30      

Unscaled Zero Point Vibrational Energy (zpe) 16863.1 cm-1
Scaled (by 0.967) Zero Point Vibrational Energy (zpe) 16306.6 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 B3LYP/6-311+G(3df,2p)
ABC
0.21072 0.20446 0.10377

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.350
C2 0.000 0.000 -1.308
C3 0.000 1.180 0.621
C4 0.000 -1.180 0.621
N5 0.000 1.191 -0.712
N6 0.000 -1.191 -0.712
H7 0.000 0.000 2.431
H8 0.000 0.000 -2.392
H9 0.000 2.146 1.115
H10 0.000 -2.146 1.115

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C12.65771.38741.38742.38112.38111.08083.74192.15872.1587
C22.65772.26122.26121.33181.33183.73851.08413.23643.2364
C31.38742.26122.36081.33282.72022.16073.23581.08453.3627
C41.38742.26122.36082.72021.33282.16073.23583.36271.0845
N52.38111.33181.33282.72022.38213.36072.05942.06123.8042
N62.38111.33182.72021.33282.38213.36072.05943.80422.0612
H71.08083.73852.16072.16073.36073.36074.82262.51722.5172
H83.74191.08413.23583.23582.05942.05944.82264.11134.1113
H92.15873.23641.08453.36272.06123.80422.51724.11134.2917
H102.15873.23643.36271.08453.80422.06122.51724.11134.2917

picture of 1,3-Diazine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 N5 122.159 C1 C3 H9 121.201
C1 C4 N6 122.159 C1 C4 H10 121.201
C2 N5 C3 116.125 C2 N6 C4 116.125
C3 C1 C4 116.598 C3 C1 H7 121.701
C4 C1 H7 121.701 N5 C2 N6 126.834
N5 C2 H8 116.583 N5 C3 H9 116.640
N6 C2 H8 116.583 N6 C4 H10 116.640
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.095      
2 C 0.664      
3 C 0.238      
4 C 0.238      
5 N -0.917      
6 N -0.917      
7 H 0.136      
8 H 0.157      
9 H 0.153      
10 H 0.153      


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 2.366 2.366
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.438 0.000 0.000
y 0.000 9.886 0.000
z 0.000 0.000 10.350


<r2> (average value of r2) Å2
<r2> 114.618
(<r2>)1/2 10.706