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

using model chemistry: HF/daug-cc-pVTZ

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/daug-cc-pVTZ
 hartrees
Energy at 0K-262.784881
Energy at 298.15K-262.791076
HF Energy-262.784881
Nuclear repulsion energy211.671519
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/daug-cc-pVTZ
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 3364 3043 7.41      
2 A1 3338 3020 20.22      
3 A1 3317 3001 12.62      
4 A1 1775 1606 100.70      
5 A1 1558 1410 87.89      
6 A1 1251 1131 1.13      
7 A1 1156 1046 2.43      
8 A1 1094 989 4.63      
9 A1 748 677 2.75      
10 A2 1133 1025 0.00      
11 A2 460 416 0.00      
12 B1 1161 1051 0.02      
13 B1 1102 997 0.68      
14 B1 909 822 8.96      
15 B1 784 710 52.92      
16 B1 412 373 3.22      
17 B2 3322 3005 25.01      
18 B2 1776 1607 138.81      
19 B2 1626 1471 21.86      
20 B2 1509 1365 1.46      
21 B2 1346 1217 13.37      
22 B2 1196 1082 8.04      
23 B2 1136 1027 8.02      
24 B2 682 617 13.26      

Unscaled Zero Point Vibrational Energy (zpe) 18077.9 cm-1
Scaled (by 0.9046) Zero Point Vibrational Energy (zpe) 16353.3 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/daug-cc-pVTZ
ABC
0.21469 0.20890 0.10588

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/daug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.342
C2 0.000 0.000 -1.294
C3 0.000 1.170 0.612
C4 0.000 -1.170 0.612
N5 0.000 1.176 -0.705
N6 0.000 -1.176 -0.705
H7 0.000 0.000 2.413
H8 0.000 0.000 -2.368
H9 0.000 2.128 1.099
H10 0.000 -2.128 1.099

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C12.63641.37891.37892.36082.36081.07093.71002.14162.1416
C22.63642.23672.23671.31531.31533.70721.07363.20243.2024
C31.37892.23672.33971.31712.69022.14753.20141.07463.3334
C41.37892.23672.33972.69021.31712.14753.20143.33341.0746
N52.36081.31531.31712.69022.35183.33242.03662.03983.7642
N62.36081.31532.69021.31712.35183.33242.03663.76422.0398
H71.07093.70722.14752.14753.33243.33244.78092.50072.5007
H83.71001.07363.20143.20142.03662.03664.78094.06794.0679
H92.14163.20241.07463.33342.03983.76422.50074.06794.2555
H102.14163.20243.33341.07463.76422.03982.50074.06794.2555

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 122.229 C1 C3 H9 121.084
C1 C4 N6 122.229 C1 C4 H10 121.084
C2 N5 C3 116.351 C2 N6 C4 116.351
C3 C1 C4 116.069 C3 C1 H7 121.965
C4 C1 H7 121.965 N5 C2 N6 126.770
N5 C2 H8 116.615 N5 C3 H9 116.687
N6 C2 H8 116.615 N6 C4 H10 116.687
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.419      
2 C -0.963      
3 C 0.022      
4 C 0.022      
5 N -1.136      
6 N -1.136      
7 H 0.652      
8 H 1.399      
9 H 0.781      
10 H 0.781      


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 2.363 2.363
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -36.445 0.000 0.000
y 0.000 -37.169 0.000
z 0.000 0.000 -30.775
Traceless
 xyz
x -2.473 0.000 0.000
y 0.000 -3.559 0.000
z 0.000 0.000 6.032
Polar
3z2-r212.065
x2-y20.724
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.343 0.000 0.000
y 0.000 9.291 0.000
z 0.000 0.000 9.648


<r2> (average value of r2) Å2
<r2> 112.727
(<r2>)1/2 10.617