Organotellurium(II) and -(IV) compounds with Picolinoylbis(thioureas): from simple 1 : 1 adducts to multimetallic aggregates

Reactions of 2,6-dipicolinoylbis(N,N-diethylthiourea) (H2LEt) with common tellurium(IV) starting materials such as PhTeBr3 or TeBr4 yield various tellurium(IV) and tellurium(II) compounds depending on the conditions applied. Equimolar amounts of H2LEt and PhTeBr3 give the 1 : 1 complex [PhTeIVBr3(H2...

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Hauptverfasser: Santos, Sailer Santos dos (VerfasserIn) , Schwade, Vania D. (VerfasserIn) , Lang, Ernesto Schulz (VerfasserIn) , Pham, Chien Thang (VerfasserIn) , Roca Jungfer, Maximilian (VerfasserIn) , Abram, Ulrich (VerfasserIn) , Nguyen, Hung Huy (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 2024
In: European journal of inorganic chemistry
Year: 2024, Jahrgang: 27, Heft: 29, Pages: 1-13
ISSN:1099-0682
DOI:10.1002/ejic.202400344
Online-Zugang:Verlag, kostenfrei, Volltext: https://doi.org/10.1002/ejic.202400344
Verlag, kostenfrei, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1002/ejic.202400344
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Verfasserangaben:Sailer S. dos Santos, Vania D. Schwade, Ernesto Schulz Lang, Chien Thang Pham, Maximilian Roca Jungfer, Ulrich Abram, and Hung Huy Nguyen

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520 |a Reactions of 2,6-dipicolinoylbis(N,N-diethylthiourea) (H2LEt) with common tellurium(IV) starting materials such as PhTeBr3 or TeBr4 yield various tellurium(IV) and tellurium(II) compounds depending on the conditions applied. Equimolar amounts of H2LEt and PhTeBr3 give the 1 : 1 complex [PhTeIVBr3(H2LEt)], while with an excess of H2LEt, the tellurium compound is partially reduced and a PhTeII+ building block coordinates to both sulfur atoms of H2LEt under the formation of the ion pair [PhTeII(H2LEt)][PhTeIVBr4]. Similar reactions between H2LEt and TeBr4 give the neutral monomer [TeIIBr2(H2LEt)] or the coordination polymer [TeIIBr2(H2LEt)]∞. The latter compound is also formed with the assistance of Pb2+ ions. While the lead ions do not appear in the isolated product, similar reactions with transition metal ions such as Ni2+, Mn2+, or Co2+ result in the formation of heterobimetallic complexes, in which Te(II) building blocks are directed to the sulfur atoms of the deprotonated ligand H2LEt2-S,S2−, while the transition metal ions occupy central coordination positions between two of the organic ligands using the pyridine nitrogen atom, carbonyl oxygen atom(s) and/or the nitrogen atoms of the thiourea units. 
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700 1 |a Abram, Ulrich  |e VerfasserIn  |4 aut 
700 1 |a Nguyen, Hung Huy  |e VerfasserIn  |4 aut 
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