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Experimental data for NH2CSNH2 (Thiourea)

22 02 02 11 45
Other names
β-Thiopseudourea; 2-Thiopseudourea; 2-Thiourea; Isothiourea; Pseudothiourea; Pseudourea, 2-thio-; Sulourea; Thiocarbamide; Thiocarbonic acid diamide; Thiomocovina; Thiourea; Thiuronium; THU; Urea, 2-thio-; USAF ek-497; Tsizp 34; Urea, thio-; beta-Thiopseudourea;
INChI INChIKey SMILES IUPAC name
InChI=1S/CH4N2S/c2-1(3)4/h(H4,2,3,4) UMGDCJDMYOKAJW-UHFFFAOYSA-N NC(N)=S Thiourea
State Conformation
1A C2
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 22.90 1.60 kJ mol-1 1982Gom/Sab:67
Hfg(0K) enthalpy of formation   1.60 kJ mol-1 1982Gom/Sab:67
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 A' 3521          
2 A' 3413          
3 A' 2964          
4 A' 2925          
5 A' 1597          
6 A' 1433          
7 A' 1372          
8 A' 1348          
9 A' 1309          
10 A' 999          
11 A' 987          
12 A' 735          
13 A' 434          
14 A'            
15 A" 2941          
16 A" 1437          
17 A"            
18 A" 603          
19 A" 501          
20 A"            
21 A"            

Calculated vibrational frequencies for NH2CSNH2 (Thiourea).
Rotational Constants (cm-1) rotational constants
See section I.F.4 to change rotational constant units
A B C reference comment
0.35297 0.17156 0.11554 2004Les/Mat:6191

Calculated rotational constants for NH2CSNH2 (Thiourea).
Product of moments of inertia moments of inertia
684695amu3Å6   3.13519923354E-114gm3 cm6
Geometric Data
picture of Thiourea

Point Group C2


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

Cartesians
Atom x (Å) y (Å) z (Å)

Atom - Atom Distances bond lengths
Distances in Å
 

Calculated geometries for NH2CSNH2 (Thiourea).

Bond descriptions


Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
H-N 4
C-N 2
C=S 1

Connectivity
Atom 1 Atom 2
C1 S2
C1 N3
C1 N4
N3 H5
N3 H6
N4 H7
N4 H8
Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
0 1   1A

Ionization Energies (eV)
Ionization Energy I.E. unc. vertical I.E. v.I.E. unc. reference
8.500   8.500   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 1A C2 True           C2 1 3
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 NH2CSNH2 (Thiourea).
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 1A C2 True       C2 1 3

Calculated electric quadrupole moments for NH2CSNH2 (Thiourea).

References
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squib reference DOI
1982Gom/Sab:67 LA Gomez, R Sabbah, "Thermodynamique de substances soufrees. IV. Etude thermochimique de la thiouree, de la thiosemicarbazide et de la thiocarbohydrazide" Thermochim. Acta, 1982, 57, 67-81 10.1016/0040-6031(82)87024-X
2004Les/Mat:6191 A Lesarri, S Mata, S Blanco, JC Lopez, JL Alonso "A rotational study of laser ablated thiourea" J. Chem. Phys. 120(13), 6191, 2004 10.1063/1.1642585
webbook NIST Chemistry Webbook (http://webbook.nist.gov/chemistry) 10.18434/T4D303

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