[NdI2(thf)5], the First Crystallographically Authenticated Neodymium(II) Complex

Abstract

Two new starting materials for a new chemistry of low-valent lanthanide compounds are the first crystallographically characterized molecular complexes of the rare Nd²⁺ ion, [NdI₂ (thf)₅ ] (1), and [TmI₂ (thf)(dme)₂ ] (2; dme=1,2-dimethoxyethane). These have a pentagonal-bipyramidal structure in which the two iodine atoms are in axial positions.