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Experimental data for C3H3N3 (1,3,5-Triazine)

22 02 02 11 45
Other names
1,3,5-Triazine; Cyanidine; s-Triazine; s-Triazine-(1,3,5); sym-Triazine; Vedita 250;
INChI INChIKey SMILES IUPAC name
InChI=1S/C3H3N3/c1-4-2-6-3-5-1/h1-3H JIHQDMXYYFUGFV-UHFFFAOYSA-N N1=CN=CN=C1 1,3,5-Triazine
State Conformation
1A1' D3H
Enthalpy of formation (Hfg), Entropy, Integrated heat capacity (0 K to 298.15 K) (HH), Heat Capacity (Cp)
Property Value Uncertainty units Reference Comment
Hfg(298.15K) enthalpy of formation 225.87 0.89 kJ mol-1 webbook
Hfg(0K) enthalpy of formation   0.89 kJ mol-1 webbook
Entropy (298.15K) entropy     J K-1 mol-1  
Integrated Heat Capacity (0 to 298.15K) integrated heat capacity     kJ mol-1  
Information can also be found for this species in the NIST Chemistry Webbook
Vibrational levels (cm-1) vibrations
Mode Number Symmetry Frequency Intensity Comment Description
Fundamental(cm-1) Harmonic(cm-1) Reference (km mol-1) unc. Reference
1 A1' 3042   1974sve/kov      
2 A1' 1132   1974sve/kov      
3 A1' 992   1974sve/kov      
4 A2' 1278   1974sve/kov      
5 A2' 1068   1974sve/kov      
6 A2" 925   1974sve/kov      
7 A2" 737   1974sve/kov      
8 E' 3056   1974sve/kov      
9 E' 1555   1974sve/kov      
10 E' 1410   1974sve/kov      
11 E' 1176   1974sve/kov      
12 E' 657   1974sve/kov      
13 E" 830   1974sve/kov      
14 E" 340   1974sve/kov      

vibrational zero-point energy: 13611.0 cm-1 (from fundamental vibrations)
Calculated vibrational frequencies for C3H3N3 (1,3,5-Triazine).
Gas-phase IR spectra can be found in the NIST Chemistry Webbook here.
Rotational Constants (cm-1) rotational constants
See section I.F.4 to change rotational constant units
A B C reference comment
0.21460 0.21460 0.10730 1966Herzberg

Calculated rotational constants for C3H3N3 (1,3,5-Triazine).
Product of moments of inertia moments of inertia
969461.2amu3Å6   4.43913563264925E-114gm3 cm6
Geometric Data
picture of 1,3,5-Triazine

Point Group D3h


Internal coordinates
distances (r) in Å, angles (a) in degrees, dihedrals (d) in degrees
Description Value unc. Connectivity Reference Comment
Atom 1 Atom 2 Atom 3 Atom 4
rCN 1.338   1 5 1966Herzberg

Cartesians
Atom x (Å) y (Å) z (Å)

Atom - Atom Distances bond lengths
Distances in Å
 

Calculated geometries for C3H3N3 (1,3,5-Triazine).

Bond descriptions


Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
C:N 6
H-C 3

Connectivity
Atom 1 Atom 2
C1 N5
C1 N6
C1 H7
C2 N4
C2 N5
C2 H8
C3 N4
C3 N6
C3 H9
Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
0 1   1A1'

Ionization Energies (eV)
Ionization Energy I.E. unc. vertical I.E. v.I.E. unc. reference
9.800   10.510   webbook

Electron Affinity (eV)
Electron Affinity unc. reference
0.450   webbook
Dipole, Quadrupole and Polarizability
Electric dipole moment dipole
State Config State description Conf description Exp. min. Dipole (Debye) Reference comment Point Group Components
x y z total dipole quadrupole
1 1 1A1' D3h True       0.000 NSRDS-NBS10   D3h 0 1
Experimental dipole measurement abbreviations: MW microwave; DT Dielectric with Temperature variation; DR Indirect (usually an upper limit); MB Molecular beam
Calculated electric dipole moments for C3H3N3 (1,3,5-Triazine).
Electric quadrupole moment quadrupole
State Config State description Conf description Exp. min. Quadrupole (D Å) Reference comment Point Group Components
xx yy zz dipole quadrupole
1 1 1A1' D3h True       D3h 0 1

Calculated electric quadrupole moments for C3H3N3 (1,3,5-Triazine).

References
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squib reference DOI
1966Herzberg Herzberg, G., Electronic spectra and electronic structure of polyatomic molecules,Van Nostrand,New York, 1966  
1974sve/kov L.M. Sverdlov, M. A. Kovner, E. P. Krainov, "Vibrational Spectra of Polyatomic Molecules" Wiley, New York 1974  
NSRDS-NBS10 R. D. Nelson Jr., D. R. Lide, A. A. Maryott "Selected Values of electric dipole moments for molecules in the gas phase" NSRDS-NBS10, 1967 10.6028/NBS.NSRDS.10
webbook NIST Chemistry Webbook (http://webbook.nist.gov/chemistry) 10.18434/T4D303

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