Deliberate synthesis and structural characterization of a scorpionate-supported cerium(III) pentasulfide complex

Abstract A scorpionate-supported lanthanide pentasulfide complex has been synthesized in a deliberate manner starting from in situ -prepared K 2 S 5 . Reaction of K 2 S 5 with in situ -formed “CeI 2 (Tp iPr2 )(THF) n ” (Tp iPr2  = hydro-tris(3,5-diisopropylpyrazolyl)borate) afforded the yellow-brown cerium(III) pentasulfide complex Ce(S 5 )(Tp iPr2 )(3,5- i Pr 2 Hpz) in 62% isolated yield (3,5- i Pr 2 Hpz = 3,5-diisopropylpyrazole). The title compound has been fully characterized, including single-crystal X-ray structural analysis.