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

using model chemistry: HF/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 HF/6-31+G**
 hartrees
Energy at 0K-262.707887
Energy at 298.15K-262.714081
HF Energy-262.707887
Nuclear repulsion energy211.009979
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/6-31+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 3393 3068 6.07      
2 A1 3380 3056 21.72      
3 A1 3353 3032 10.57      
4 A1 1790 1618 104.01      
5 A1 1565 1415 81.92      
6 A1 1254 1134 0.45      
7 A1 1158 1047 1.96      
8 A1 1101 995 4.67      
9 A1 749 677 3.68      
10 A2 1126 1019 0.00      
11 A2 458 414 0.00      
12 B1 1154 1044 0.07      
13 B1 1093 989 1.06      
14 B1 904 817 11.14      
15 B1 783 708 60.26      
16 B1 412 373 3.50      
17 B2 3359 3037 24.75      
18 B2 1790 1618 141.65      
19 B2 1631 1475 18.63      
20 B2 1509 1364 1.25      
21 B2 1351 1222 12.64      
22 B2 1212 1096 12.64      
23 B2 1162 1050 2.24      
24 B2 682 617 12.46      

Unscaled Zero Point Vibrational Energy (zpe) 18184.4 cm-1
Scaled (by 0.9042) Zero Point Vibrational Energy (zpe) 16442.3 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 HF/6-31+G**
ABC
0.21328 0.20762 0.10520

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.338
C2 0.000 0.000 -1.288
C3 0.000 1.178 0.611
C4 0.000 -1.178 0.611
N5 0.000 1.183 -0.706
N6 0.000 -1.183 -0.706
H7 0.000 0.000 2.411
H8 0.000 0.000 -2.357
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
C12.62571.38391.38392.36122.36121.07273.69472.14522.1452
C22.62572.23422.23421.31871.31873.69851.06893.19973.1997
C31.38392.23422.35511.31642.70292.15083.19271.07153.3450
C41.38392.23422.35512.70291.31642.15083.19273.34501.0715
N52.36121.31871.31642.70292.36633.33322.03142.03803.7739
N62.36121.31872.70291.31642.36633.33322.03143.77392.0380
H71.07273.69852.15082.15083.33323.33324.76742.50332.5033
H83.69471.06893.19273.19272.03142.03144.76744.05984.0598
H92.14523.19971.07153.34502.03803.77392.50334.05984.2635
H102.14523.19973.34501.07153.77392.03802.50334.05984.2635

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 121.935 C1 C3 H9 121.249
C1 C4 N6 121.935 C1 C4 H10 121.249
C2 N5 C3 115.961 C2 N6 C4 115.961
C3 C1 C4 116.618 C3 C1 H7 121.691
C4 C1 H7 121.691 N5 C2 N6 127.589
N5 C2 H8 116.206 N5 C3 H9 116.816
N6 C2 H8 116.206 N6 C4 H10 116.816
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.101      
2 C 0.145      
3 C -0.056      
4 C -0.056      
5 N -0.308      
6 N -0.308      
7 H 0.191      
8 H 0.159      
9 H 0.168      
10 H 0.168      


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 2.497 2.497
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -36.740 0.000 0.000
y 0.000 -37.722 0.005
z 0.000 0.005 -30.906
Traceless
 xyz
x -2.426 0.000 0.000
y 0.000 -3.899 0.005
z 0.000 0.005 6.325
Polar
3z2-r212.650
x2-y20.982
xy0.000
xz0.000
yz0.005


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.785 0.000 0.000
y 0.000 8.933 0.004
z 0.000 0.004 9.226


<r2> (average value of r2) Å2
<r2> 113.500
(<r2>)1/2 10.654