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

using model chemistry: HSEh1PBE/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HSEh1PBE/3-21G
 hartrees
Energy at 0K-262.565290
Energy at 298.15K-262.571277
HF Energy-262.565290
Nuclear repulsion energy207.980302
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 HSEh1PBE/3-21G
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 3258 3138 3.12      
2 A1 3238 3119 17.97      
3 A1 3212 3094 5.85      
4 A1 1583 1525 15.84      
5 A1 1436 1383 71.18      
6 A1 1181 1138 7.37      
7 A1 1103 1062 0.14      
8 A1 996 959 1.75      
9 A1 713 687 5.44      
10 A2 1034 996 0.00      
11 A2 427 411 0.00      
12 B1 1080 1040 0.06      
13 B1 1027 990 0.12      
14 B1 857 826 8.07      
15 B1 773 745 56.44      
16 B1 367 354 3.92      
17 B2 3215 3097 20.65      
18 B2 1586 1528 60.53      
19 B2 1498 1443 10.69      
20 B2 1420 1368 0.51      
21 B2 1260 1214 6.41      
22 B2 1189 1145 0.21      
23 B2 1096 1056 2.99      
24 B2 652 628 12.16      

Unscaled Zero Point Vibrational Energy (zpe) 17099.9 cm-1
Scaled (by 0.9633) Zero Point Vibrational Energy (zpe) 16472.3 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 HSEh1PBE/3-21G
ABC
0.20659 0.20229 0.10221

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.353
C2 0.000 0.000 1.322
C3 0.000 1.190 -0.626
C4 0.000 -1.190 -0.626
N5 0.000 1.198 0.714
N6 0.000 -1.198 0.714
H7 0.000 0.000 -2.434
H8 0.000 0.000 2.399
H9 0.000 2.147 -1.128
H10 0.000 -2.147 -1.128

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C12.67521.39461.39462.38892.38891.08083.75212.15842.1584
C22.67522.28292.28291.34341.34343.75601.07693.25723.2572
C31.39462.28292.38031.33992.73822.16443.25081.08003.3742
C41.39462.28292.38032.73821.33992.16443.25083.37421.0800
N52.38891.34341.33992.73822.39563.36792.06752.07163.8179
N62.38891.34342.73821.33992.39563.36792.06753.81792.0716
H71.08083.75602.16442.16443.36793.36794.83292.51272.5127
H83.75211.07693.25083.25082.06752.06754.83294.12874.1287
H92.15843.25721.08003.37422.07163.81792.51274.12874.2932
H102.15843.25723.37421.08003.81792.07162.51274.12874.2932

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 121.744 C1 C3 H9 120.903
C1 C4 N6 121.744 C1 C4 H10 120.903
C2 N5 C3 116.595 C2 N6 C4 116.595
C3 C1 C4 117.163 C3 C1 H7 121.418
C4 C1 H7 121.418 N5 C2 N6 126.158
N5 C2 H8 116.921 N5 C3 H9 117.352
N6 C2 H8 116.921 N6 C4 H10 117.352
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.297      
2 C 0.205      
3 C 0.055      
4 C 0.055      
5 N -0.513      
6 N -0.513      
7 H 0.236      
8 H 0.262      
9 H 0.255      
10 H 0.255      


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 -2.393 2.393
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -36.195 0.000 0.000
y 0.000 -36.893 0.000
z 0.000 0.000 -30.043
Traceless
 xyz
x -2.727 0.000 0.000
y 0.000 -3.773 0.000
z 0.000 0.000 6.501
Polar
3z2-r213.001
x2-y20.698
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.344 0.000 0.000
y 0.000 7.673 0.000
z 0.000 0.000 8.524


<r2> (average value of r2) Å2
<r2> 115.653
(<r2>)1/2 10.754