Bispentamethylcyclopentadienyl uranium(IV) thiolate compounds. Synthesis and reactions with CO2 and CS2

Autor: Monique Lance, Martine Nierlich, Christophe Lescop, Thérèse Arliguie, Michel Ephritikhine
Rok vydání: 1999
Předmět:
Zdroj: Journal of Organometallic Chemistry. 580:137-144
ISSN: 0022-328X
DOI: 10.1016/s0022-328x(98)01139-5
Popis: The bisthiolate uranium complexes [U(Cp*)2(SR)2] (R=Me, iPr, tBu, Ph) were synthesized by treatment of [U(Cp*)2(Cl)2] with NaSR; the crystal structure of [U(Cp*)2(SMe)2] was determined. Their reactions with CO2 or CS2 gave the insertion derivatives [U(Cp*)2(SR)(E2CSR)] (E=O and R=tBu; E=S and R=Me, iPr or tBu) and [U(Cp*)2(E2CSR)2] (E=O and R=tBu; E=S and R=Me or tBu); [U(Cp*)2(StBu)(S2CStBu)] was characterized by its crystal structure. Treatment of this latter with CO2 gave the mixed insertion complex [U(Cp*)2(O2CStBu)(S2CStBu)]. Thermolysis of the insertion compounds led to the reverse elimination reaction of CO2 and CS2. Reduction of [U(Cp*)2(O2CStBu)2] with Na(Hg) afforded the corresponding U(III) anionic complex.
Databáze: OpenAIRE