1152314-37-8Relevant articles and documents
Synthesis and X-ray structures of the polycyclic dimers {[PhB(μ-NtBu)2AsN(tBu)H]LiI}2 and [PhB(μ-NtBu) 2AsN(tBu)Li]2
Konu, Jari,Chivers, Tristram
, p. 875 - 879 (2009/04/13)
The metathesis of [PhB(μ-NtBu)2]AsCl and tBuN(H)Li in 1:1 molar ratio in diethyl ether produced the amido derivative [PhB(μ-NtBu) 2AsN(tBu)H] (1) in good yield. The lithiation of 1 with one equivalent of nBuLi afforded the lithium salt [PhB(μ-NtBu) 2AsN(tBu)Li] (2a). Both 1 and 2a were characterized by multinuclear NMR spectroscopy. The crystal structure of 2a is comprised of a U-shaped, centrosymmetric dimer in which the monomeric [PhB(μ-NtBu)2AsN(tBu) ]-Li+ units are linked by Li-N interactions to give a six-rung ladder. Oxidation of 2a with one-half equivalent of I2 in diethyl ether resulted in hydrogen abstraction from the solvent to give the dimeric lithium iodide adduct {[PhB(μ-NtBu)2AsN(tBu)H]LiI} 2 (1·LiI) with a central Li2I2 ring.