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

using model chemistry: PBE1PBE/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 PBE1PBE/6-31G*
 hartrees
Energy at 0K-264.016310
Energy at 298.15K-264.022197
HF Energy-264.016310
Nuclear repulsion energy209.287298
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 PBE1PBE/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 3251 3089 7.18      
2 A1 3216 3056 21.18      
3 A1 3200 3041 12.75      
4 A1 1661 1578 47.69      
5 A1 1464 1391 56.24      
6 A1 1182 1123 1.59      
7 A1 1095 1040 0.85      
8 A1 1024 973 5.56      
9 A1 698 663 4.23      
10 A2 1009 959 0.00      
11 A2 408 388 0.00      
12 B1 1030 979 0.00      
13 B1 986 937 0.12      
14 B1 830 789 3.11      
15 B1 741 704 39.62      
16 B1 351 334 3.09      
17 B2 3203 3044 27.09      
18 B2 1657 1575 82.04      
19 B2 1520 1445 10.07      
20 B2 1408 1338 0.20      
21 B2 1304 1239 1.10      
22 B2 1255 1193 8.79      
23 B2 1111 1056 3.10      
24 B2 631 600 11.14      

Unscaled Zero Point Vibrational Energy (zpe) 17117.3 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 16266.6 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 PBE1PBE/6-31G*
ABC
0.21064 0.20362 0.10354

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G*

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 -1.303
C3 0.000 1.181 0.619
C4 0.000 -1.181 0.619
N5 0.000 1.195 -0.714
N6 0.000 -1.195 -0.714
H7 0.000 0.000 2.438
H8 0.000 0.000 -2.392
H9 0.000 2.151 1.114
H10 0.000 -2.151 1.114

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C12.65621.39011.39012.38792.38791.08513.74492.16442.1644
C22.65622.25602.25601.33251.33253.74131.08873.23563.2356
C31.39012.25602.36131.33362.72452.16853.23431.08923.3683
C41.39012.25602.36132.72451.33362.16853.23433.36831.0892
N52.38791.33251.33362.72452.39043.37142.05992.06283.8131
N62.38791.33252.72451.33362.39043.37142.05993.81312.0628
H71.08513.74132.16852.16853.37143.37144.83002.52622.5262
H83.74491.08873.23433.23432.05992.05994.83004.11304.1130
H92.16443.23561.08923.36832.06283.81312.52624.11304.3023
H102.16443.23563.36831.08923.81312.06282.52624.11304.3023

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 122.487 C1 C3 H9 121.142
C1 C4 N6 122.487 C1 C4 H10 121.142
C2 N5 C3 115.606 C2 N6 C4 115.606
C3 C1 C4 116.279 C3 C1 H7 121.860
C4 C1 H7 121.860 N5 C2 N6 127.535
N5 C2 H8 116.232 N5 C3 H9 116.371
N6 C2 H8 116.232 N6 C4 H10 116.371
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.199      
2 C 0.156      
3 C 0.035      
4 C 0.035      
5 N -0.397      
6 N -0.397      
7 H 0.191      
8 H 0.192      
9 H 0.192      
10 H 0.192      


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 2.322 2.322
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.299 0.000 0.000
y 0.000 -36.280 0.000
z 0.000 0.000 -30.044
Traceless
 xyz
x -2.137 0.000 0.000
y 0.000 -3.608 0.000
z 0.000 0.000 5.745
Polar
3z2-r211.490
x2-y20.981
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.045 0.000 0.000
y 0.000 8.352 0.000
z 0.000 0.000 8.993


<r2> (average value of r2) Å2
<r2> 114.202
(<r2>)1/2 10.687