Sulfur‐nitrogen bond activation to give polynuclear terbium(III) complexes

Abstract

In recent years the SN ligand platform was progressing toward high performing lanthanide‐based single‐molecule magnets. Especially the sodium and potassium triimidosulfites are the most promising starting materials. Hence, the [Na(thf)6][S(tmsN)3(thf)3 Na3{(Ntms)3S}] (1), [S(tBuN)3(thf)3K3{(HNtBu)(NtBu)2S}] (2), and [S(tBuN)3(thf)3Na3{(HNtBu)(NtBu)2S}] (L1) precursors were prepared. L1 leads to four different terbium derivatives upon reaction with the terbium halide salts. For the derived complexes [ClTb{Na(thf)}2{(NtBu)3S}2] (3), [{Na(thf)}2{S(tBuN)3}TbSTb{Na(thf)}2{(NtBu)3S}] (4), [(tBuNH)Tb{(NtBu)3S}]2 (5), and [{S(tBuN)3}TbSTb{(NtBu)3S}]2 (6) the solid‐state structures were determined and compared. Unfortunately, isolation of these four complexes in preparative applicable yields could not yet be accomplished.