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

using model chemistry: B3LYP/6-31G**

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/6-31G**
 hartrees
Energy at 0K-264.329486
Energy at 298.15K-264.335372
Nuclear repulsion energy208.647832
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/6-31G**
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 3217 3091 9.23      
2 A1 3181 3057 21.41      
3 A1 3166 3042 13.49      
4 A1 1626 1562 41.05      
5 A1 1445 1388 57.33      
6 A1 1167 1121 2.66      
7 A1 1084 1041 1.09      
8 A1 1012 972 5.01      
9 A1 696 669 3.91      
10 A2 1002 963 0.00      
11 A2 409 393 0.00      
12 B1 1022 982 0.01      
13 B1 980 942 0.11      
14 B1 826 794 2.29      
15 B1 739 710 32.58      
16 B1 354 340 3.22      
17 B2 3169 3045 29.39      
18 B2 1623 1560 78.13      
19 B2 1505 1446 8.38      
20 B2 1402 1347 0.23      
21 B2 1269 1219 4.62      
22 B2 1233 1185 5.69      
23 B2 1099 1056 2.69      
24 B2 632 608 11.47      

Unscaled Zero Point Vibrational Energy (zpe) 16928.5 cm-1
Scaled (by 0.9608) Zero Point Vibrational Energy (zpe) 16264.9 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/6-31G**
ABC
0.20924 0.20241 0.10288

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.356
C2 0.000 0.000 -1.309
C3 0.000 1.184 0.622
C4 0.000 -1.184 0.622
N5 0.000 1.199 -0.716
N6 0.000 -1.199 -0.716
H7 0.000 0.000 2.441
H8 0.000 0.000 -2.398
H9 0.000 2.153 1.119
H10 0.000 -2.153 1.119

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C12.66551.39331.39332.39442.39441.08473.75382.16652.1665
C22.66552.26602.26601.33771.33773.75021.08823.24553.2455
C31.39332.26602.36891.33882.73382.17023.24391.08873.3746
C41.39332.26602.36892.73381.33882.17023.24393.37461.0887
N52.39441.33771.33882.73382.39823.37722.06512.06843.8219
N62.39441.33772.73381.33882.39823.37722.06513.82192.0684
H71.08473.75022.17022.17023.37723.37724.83852.52692.5269
H83.75381.08823.24393.24392.06512.06514.83854.12344.1234
H92.16653.24551.08873.37462.06843.82192.52694.12344.3069
H102.16653.24553.37461.08873.82192.06842.52694.12344.3069

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 122.406 C1 C3 H9 121.096
C1 C4 N6 122.406 C1 C4 H10 121.096
C2 N5 C3 115.689 C2 N6 C4 115.689
C3 C1 C4 116.443 C3 C1 H7 121.779
C4 C1 H7 121.779 N5 C2 N6 127.368
N5 C2 H8 116.316 N5 C3 H9 116.498
N6 C2 H8 116.316 N6 C4 H10 116.498
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.096      
2 C 0.231      
3 C 0.109      
4 C 0.109      
5 N -0.400      
6 N -0.400      
7 H 0.104      
8 H 0.116      
9 H 0.113      
10 H 0.113      


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 2.287 2.287
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 3.068 0.000 0.000
y 0.000 8.440 0.000
z 0.000 0.000 9.137


<r2> (average value of r2) Å2
<r2> 114.851
(<r2>)1/2 10.717