A Te₂N₆Li₄ Cage Containing the Tris(tert‐butylimido)tellurite Dianion

Abstract

A nonexplosive, easy‐to‐handle TeN reagent is the Li2 derivative of the tris(tert‐butylimido)tellurite dianion 1, which can be prepared from [(tBuN)Te]2(μ‐NtBu)2 and tBuNHLi. The Te2N6Li4 cage in 1 adopts a distorted hexagonal prismatic structure. The reaction of 1 with PhPCl2 or PhBCl2 produces the spirocycle 2 and the four‐membered ring 3, respectively.

A New Coordination Mode for the Tripodal [Te(NtBu)3]2− Dianion: Preparation and Structures of {ClIn[Te(NtBu)3]}2 and {LiIn[Te(NtBu)3]2}·LiCl

“…PhB(µ-NtBu) 2 TeNtBu. [1] The [Te(NtBu) 3 ] 2Ϫ dianion in 1 behaves as a tridentate ligand. 2 TeNtBu.…”

“…[4] The tellurium congener [Te(NtBu) 3 ] 2Ϫ acts as an N,NЈ-bidentate ligand in PhB(µ-NtBu) 2 TeNtBu [1] and in the anions [M(µ-NtBu) 2 TeNtBu] Ϫ (M ϭ Sb, Bi). [5] The formation of coordination complexes is often accompanied by redox processes.…”

“…[5] The formation of coordination complexes is often accompanied by redox processes. [1,6,7] For example, the reaction of [Te(NtBu) 3 ] 2Ϫ with PhPCl 2 produces the spirocycle Te[(µ-NtBu) 2 P(Ph)NtBu] 2 , formally a tellurium() complex of the [PhP(NtBu) 3 ] 2Ϫ dianion, and elemental tellurium. [1] More dramatically, the stannatellurone [tBuNSn(µ-NtBu) 2 TeNtBu](µ 3 -SnTe) is produced from [Te(NtBu) 3 ] 2Ϫ and SnCl 2 .…”

“…[1,6,7] For example, the reaction of [Te(NtBu) 3 ] 2Ϫ with PhPCl 2 produces the spirocycle Te[(µ-NtBu) 2 P(Ph)NtBu] 2 , formally a tellurium() complex of the [PhP(NtBu) 3 ] 2Ϫ dianion, and elemental tellurium. [1] More dramatically, the stannatellurone [tBuNSn(µ-NtBu) 2 TeNtBu](µ 3 -SnTe) is produced from [Te(NtBu) 3 ] 2Ϫ and SnCl 2 . [8] We report here the synthesis and structures of the neutral, dimeric complex {ClIn[Te(NtBu) 3 ]} 2 (1), in which the [Te(NtBu) 3 ] 2Ϫ dianion adopts a novel, tridentate bonding mode, and the lithium chloride adduct {LiIn[Te(NtBu) 3 ] 2 }·LiCl (2) with a spirocyclic indium centre.…”

“…[1] More dramatically, the stannatellurone [tBuNSn(µ-NtBu) 2 TeNtBu](µ 3 -SnTe) is produced from [Te(NtBu) 3 ] 2Ϫ and SnCl 2 . [8] We report here the synthesis and structures of the neutral, dimeric complex {ClIn[Te(NtBu) 3 ]} 2 (1), in which the [Te(NtBu) 3 ] 2Ϫ dianion adopts a novel, tridentate bonding mode, and the lithium chloride adduct {LiIn[Te(NtBu) 3 ] 2 }·LiCl (2) with a spirocyclic indium centre.…”