Synthesis and Crystal Structures of the First Antimony(III) Aziridinides

Abstract

The first antimony(III) aziridinyl derivatives are reported. Treatment of anhydrous SbCl with N-lithioaziridine Li(Azn) (Azn = NCH) afforded the structurally unique heterobimetallic lithium/antimony(III) amide complex [LiSb(μ-Cl)(μ-Azn)(THF)] (1). Homoleptic Sb(Azn) (2) has become available for the first time through an amide group exchange reaction between Sb(NMe) and 3 equiv of aziridine. The low-melting Sb(Azn) exhibits a "weak dimer" structure in the crystal.

Luminescent Colloidal InSb Quantum Dots from In situ-Generated Single-Source Precursor

“…Several compounds of Sb(III) with primary amines are known, 30−32 which are usually dimers or heterocycles. In these complexes, the protons of methylene groups bound to N are also observed to shift downfield, 31 while the signal from bound DMA (if still present) is found at the same value of chemical shift of Sb[NMe 2 ] 3 . 30 Based on the examples from the literature, and the information obtained from the NMR spectra discussed above, we propose that species such as Sb x [ODA] y (x = 2 or 4, y = 3 or 6, respectively) likely coexist in solution (see Supporting Information, Scheme S1).…”

Molecular Precursors for the Phase‐Change Material Germanium‐Antimony‐Telluride, Ge2Sb2Te5 (GST)

“…120 °C/0.05 mbar) from a transamination reaction between Sb(NMe 2 ) 3 and 3 equiv. of aziridine according to Scheme …”

“…Synthesis of [Li 3 Sb(μ 3 -Cl) 2 (μ-Azn) 4 (THF) 2 ] ϱ and Sb 2 (Azn) 6 . [76] REVIEW Sb(Azn) 3 , which was found to exist as dimers Sb 2 (Azn) 6 in the solid state, could be isolated in good yield (73 % after distillation at ca. 120°C/0.05 mbar) from a transamination reaction between Sb(NMe 2 ) 3 and 3 equiv.…”

“…of aziridine according to Scheme 4. [76] An X-ray diffraction study of low-melting Sb 2 (Azn) 6 revealed a "weak dimer" structure in the crystal (Figure 21). Future studies will show if Sb 2 (Azn) 6 might rival the established Sb(NMe 2 ) 3 as an antimony precursor in the ALD and CVD production of GST thin films.…”

“…Future studies will show if Sb 2 (Azn) 6 might rival the established Sb(NMe 2 ) 3 as an antimony precursor in the ALD and CVD production of GST thin films. [76] Figure 21. Molecular structure of Sb 2 (Azn) 6 in the crystal.…”