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

using model chemistry: PBEPBE/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBE/6-31+G**
 hartrees
Energy at 0K-264.019703
Energy at 298.15K-264.025422
Nuclear repulsion energy207.298167
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 PBEPBE/6-31+G**
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 3144 3108 11.19      
2 A1 3113 3078 15.45      
3 A1 3096 3061 13.38      
4 A1 1567 1549 40.17      
5 A1 1396 1380 48.85      
6 A1 1131 1118 0.92      
7 A1 1051 1039 0.61      
8 A1 979 968 3.09      
9 A1 671 663 3.07      
10 A2 959 948 0.00      
11 A2 381 376 0.00      
12 B1 979 968 0.00      
13 B1 941 930 0.02      
14 B1 790 781 5.98      
15 B1 712 704 41.55      
16 B1 317 313 3.35      
17 B2 3099 3064 20.36      
18 B2 1565 1547 73.79      
19 B2 1447 1430 3.97      
20 B2 1349 1333 0.13      
21 B2 1259 1244 1.88      
22 B2 1206 1193 9.63      
23 B2 1062 1050 4.17      
24 B2 610 603 8.82      

Unscaled Zero Point Vibrational Energy (zpe) 16411.2 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 16224.1 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 PBEPBE/6-31+G**
ABC
0.20680 0.19959 0.10157

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.364
C2 0.000 0.000 -1.316
C3 0.000 1.191 0.626
C4 0.000 -1.191 0.626
N5 0.000 1.209 -0.721
N6 0.000 -1.209 -0.721
H7 0.000 0.000 2.457
H8 0.000 0.000 -2.412
H9 0.000 2.169 1.125
H10 0.000 -2.169 1.125

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C12.67981.40131.40132.41002.41001.09353.77622.18182.1818
C22.67982.27862.27861.34701.34703.77331.09643.26503.2650
C31.40132.27862.38301.34762.75252.18463.26391.09703.3969
C41.40132.27862.38302.75251.34762.18463.26393.39691.0970
N52.41001.34701.34762.75252.41723.40062.07872.08083.8489
N62.41001.34702.75251.34762.41723.40062.07873.84892.0808
H71.09353.77332.18462.18463.40063.40064.86972.54532.5453
H83.77621.09643.26393.26392.07872.07874.86974.14914.1491
H92.18183.26501.09703.39692.08083.84892.54534.14914.3373
H102.18183.26503.39691.09703.84892.08082.54534.14914.3373

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 122.486 C1 C3 H9 121.210
C1 C4 N6 122.486 C1 C4 H10 121.210
C2 N5 C3 115.474 C2 N6 C4 115.474
C3 C1 C4 116.484 C3 C1 H7 121.758
C4 C1 H7 121.758 N5 C2 N6 127.597
N5 C2 H8 116.202 N5 C3 H9 116.305
N6 C2 H8 116.202 N6 C4 H10 116.305
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.187      
2 C -0.034      
3 C -0.251      
4 C -0.251      
5 N -0.136      
6 N -0.136      
7 H 0.157      
8 H 0.152      
9 H 0.155      
10 H 0.155      


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 2.431 2.431
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -36.324 0.000 0.000
y 0.000 -37.791 0.000
z 0.000 0.000 -31.072
Traceless
 xyz
x -1.892 0.000 0.000
y 0.000 -4.093 0.000
z 0.000 0.000 5.985
Polar
3z2-r211.971
x2-y21.468
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.036 0.000 0.000
y 0.000 10.016 0.000
z 0.000 0.000 10.462


<r2> (average value of r2) Å2
<r2> 116.718
(<r2>)1/2 10.804