Accessing homoleptic neutral and anionic five-coordinate Pr(iv) siloxide complexes.

ABSTRACT: Structurally characterized Pr(iv) complexes are limited to four examples because the ligands and reaction conditions capable of stabilizing Pr(iv) remain elusive. Here we identify reaction conditions allowing the synthesis of Pr(iv) complexes that were originally thought difficult to isolate. The Pr(iv) complexes of the tris(tert-butoxy)siloxide (-OSi(O ^t Bu)₃) and triphenylsiloxide (-OSiPh₃) ligands, [Pr^iv(OSi(OtBu)₃)₄] (2-Pr^OtBu), [MPr^iv(OSiPh₃)₅] (5M-Pr^Ph) (M = K, Cs), and [KDB18C6][Pr^iv(OSiPh₃)₅], (5[KDB18C6-Pr^Ph]) were isolated and fully characterized upon the oxidation of the tetrakis and pentakis(siloxide)p

SUBMITTER: Pandey P 

PROVIDER: S-EPMC12517353 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature