120097-53-2

Basic information

• Product Name: SAMARIUM(III) IONOPHORE II
• Synonyms: SAMARIUM(III) IONOPHORE II;Et4todit, 1,3,8,10-Tetraethyl-1,3,8,10-tetrahydro[1,2,3,4]tetrathiocino[5,6-d:7,8-d]diimidazole-2,9-dithione
• CAS NO: 120097-53-2
• Molecular Formula: C14H20N4S6
• Molecular Weight: 436.736
• Mol File: 120097-53-2.mol

Chemical Properties

• Appearance: /
• CAS DataBase Reference: SAMARIUM(III) IONOPHORE II(CAS DataBase Reference)
• NIST Chemistry Reference: SAMARIUM(III) IONOPHORE II(120097-53-2)
• EPA Substance Registry System: SAMARIUM(III) IONOPHORE II(120097-53-2)

Safety Data

• Hazardous Substances Data: 120097-53-2(Hazardous Substances Data)

Upstream product

• 21035-66-5 N,N'-diethylimidazolidine-2-thione-4,5-dione 

Relevant articles and documents

PVC Membrane and Coated Graphite Potentiometric Sensors Based on Et 4todit for Selective Determination of Samarium(III)

Solution studies on the binding properties of 4,5,6,7-tetrathiocino[1,2-b:3,4-b′]diimidazolyl-1,3,8,10-tetraethyl-2, 9-dithione (Et4todit) toward a number of cationic species including some lanthanide ions revealed the occurrence of a selective 1:1 complexation of the ligand with Sm3+ ion. Consequently, Et4todit was used as a suitable neutral ionophore for the preparation of novel polymeric membrane (PME) and coated graphite (CGE) Sm3+-selective electrodes. The electrodes exhibit a Nernstian behavior for Sm3+ ions over wide concentration ranges (1.0 × 10-5-1.0 × 10-1 M for PME and 1.0 × 10-7-1.0 × 10-1 M for CGE) and very low limits of detection (8.0 × 10-6 M for PME and 1.6 × 10-8 M for CGE). The proposed potentiometric sensors manifest advantages of relatively fast response, and, most importantly, good selectivities relative to wide variety of other cations, including other lanthanide ions. The selectivity behavior of the proposed Sm 3+-selective electrodes revealed a great improvement compared to the best previously reported electrode for samarium(III) ion. The potentiometric responses of the electrodes are independent of the pH of the test solution in the pH range 4.0-6.5. The electrodes were successfully applied to the recovery of Sm3+ ion from tap water samples and also, as an indicator electrode, in potentiometric titration of samarium(III) ions.

New Neutral Nickel Dithiolene Complexes derived from 1,3-Dialkylimidazolidine-2,4,5-trithione, showing Remarkable Near-IR Absorption

The synthesis, solution redox properties and electronic spectra of a new series of stable, neutral nickel-dithiolene complexes (where R2timdt is the monoreduced anion of the first example of 1,3-dialkylimidazolidine-2,4,5-trithione and alkyl = Et, Pri, Bu), showing an intense electronic absorption at λ ca. 1000 nm, as well as the crystal structure of the Pri derivative are reported.

Synthesis, Crystal and Molecular Structures of the Novel Compounds 4,7-Dithio-5,6-Diselenocino-[1,2b:3,4b']-Diimidazolyl-1,3,8,10-Tetrabutyl 2,9-Dithione and -2,9-Diselone

The sulfurization reaction with Lawesson's reagent on a series of 1,3-dialkyl imidazolidine-2-selone-4,5-diones in toluene gave depending on the reaction conditions, the compounds 4,7-dithio, 5,6-diselenocino[1,2b:3,4b']diimidazolyl-1,3,8,10-tetraalkane-2,9-dithione and -2,9-diselone. The structural characterization of the tetrabutyl derivatives are reported.

SYNTHESIS OF SOME 4,5,6,7-TETRATHIOCINODIIMIDAZOLYL-1,3,8,10-TETRASUBSTITUTED-2,9-DITHIONES AND CRYSTAL STRUCTURE OF THE TETRAETHYL DERIVATIVE

A new unexpected molecule has been obtained by reacting 1,3-disubstituted-imidazolidinetrione-2-thio derivatives (R=Methyl, Ethyl, Phenyl, o-Tolyl) with Lawesson's reagent.The X-ray structure of a crystal of this material (R=Ethyl) demonstrated that the title compound with an eight-membered ring composed of four S and four C-atoms was formed.The crystals are monoclinic, space group C2/c, a=18.071(4), b=9.447(2), c=14.952(3) Angstroem, β=126.14(2) deg, U=2061.4(9) Angstroem3, Z=4.Solution and refinement of intensity data gave final residuals of R=0.0354 and RW=0.0426 using 1090 observed reflections /=2?(I)>.In the molecule the eight membered ring adopts a chair conformation; in the -C-C-C-C-moiety the C(3)-C(3') bond length is shorter than that of a single bond and the imidazolidine rings are not planar.