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

using model chemistry: HF/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/6-311G*
 hartrees
Energy at 0K-262.743793
Energy at 298.15K-262.749993
Nuclear repulsion energy211.311374
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 HF/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3386 3062 11.66      
2 A1 3371 3049 34.98      
3 A1 3344 3024 12.23      
4 A1 1787 1616 95.27      
5 A1 1562 1413 90.00      
6 A1 1253 1133 1.04      
7 A1 1159 1048 2.69      
8 A1 1100 995 5.52      
9 A1 751 680 3.86      
10 A2 1125 1018 0.00      
11 A2 461 417 0.00      
12 B1 1150 1041 0.02      
13 B1 1092 988 1.22      
14 B1 908 821 6.31      
15 B1 786 711 58.62      
16 B1 415 375 2.99      
17 B2 3349 3029 40.16      
18 B2 1790 1619 139.08      
19 B2 1632 1476 22.89      
20 B2 1513 1368 1.47      
21 B2 1352 1222 12.81      
22 B2 1201 1086 8.23      
23 B2 1143 1034 4.56      
24 B2 684 619 13.17      

Unscaled Zero Point Vibrational Energy (zpe) 18155.9 cm-1
Scaled (by 0.9044) Zero Point Vibrational Energy (zpe) 16420.2 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 HF/6-311G*
ABC
0.21407 0.20807 0.10551

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.345
C2 0.000 0.000 -1.295
C3 0.000 1.172 0.613
C4 0.000 -1.172 0.613
N5 0.000 1.179 -0.707
N6 0.000 -1.179 -0.707
H7 0.000 0.000 2.418
H8 0.000 0.000 -2.370
H9 0.000 2.132 1.098
H10 0.000 -2.132 1.098

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C12.64001.38171.38172.36612.36611.07303.71492.14662.1466
C22.64002.23882.23881.31741.31743.71301.07503.20523.2052
C31.38172.23882.34331.31942.69532.15223.20451.07633.3395
C41.38172.23882.34332.69531.31942.15223.20453.33951.0763
N52.36611.31741.31942.69532.35733.33952.03862.04113.7708
N62.36611.31742.69531.31942.35733.33952.03863.77082.0411
H71.07303.71302.15222.15223.33953.33954.78792.50792.5079
H83.71491.07503.20453.20452.03862.03864.78794.07104.0710
H92.14663.20521.07633.33952.04113.77082.50794.07104.2647
H102.14663.20523.33951.07633.77082.04112.50794.07104.2647

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 122.308 C1 C3 H9 121.198
C1 C4 N6 122.308 C1 C4 H10 121.198
C2 N5 C3 116.225 C2 N6 C4 116.225
C3 C1 C4 115.990 C3 C1 H7 122.005
C4 C1 H7 122.005 N5 C2 N6 126.944
N5 C2 H8 116.528 N5 C3 H9 116.493
N6 C2 H8 116.528 N6 C4 H10 116.493
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.388 -0.733   -0.837
2 C 0.126 0.887   0.882
3 C 0.059 0.681   0.688
4 C 0.059 0.681   0.688
5 N -0.394 -0.849   -0.856
6 N -0.394 -0.849   -0.856
7 H 0.230 0.206   0.255
8 H 0.232 -0.036   -0.017
9 H 0.236 0.006   0.026
10 H 0.236 0.006   0.026


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 2.377 2.377
CHELPG        
AIM        
ESP 0.000 0.000 2.404 2.404


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 3.592 0.000 0.000
y 0.000 8.202 0.000
z 0.000 0.000 8.700


<r2> (average value of r2) Å2
<r2> 112.927
(<r2>)1/2 10.627