[SbN(SbCl)₃(NSbCl₂)(NSiMe₃)₂·SbCl₃], an Unusual Nitridoantimony Complex with a Heterocubane Structure

X-Ray crystallographic structure of Ga8(pz)12O4Cl4·2thf: a novel gallium pyrazololate complex with a Ga4O4 core

“…There has been a resurgence of interest in compounds of maingroup metals with a heterocubane core. [1][2][3][4][5][6] The recent work on gallium-group 16 cubanes describes the synthesis and structure of compounds with Ga 4 S 4 , Ga 4 Se 4 and Ga 4 Te 4 cores. 7 However, prior to this communication there are no reported examples of compounds with a Ga 4 O 4 cubane core.…”

“…1 method A: to a Schlenk tube charged with GaCl 3 (0.04 g 2.27 mmol) in 20 cm 3 of thf was added a solution of Na[MeGa(pz) 3 ] (0.52 g 1.68 mmol) in 15 cm 3 of thf. An immediate turbidity occurred and the resulting solution stirred for 3 days.…”

“…The filtrate was evaporated to dryness. Dissolution of this in 60 cm 3 of MeCN, evaporation under vacuum to about 30 cm 3 and storing for one week at 230 °C produced small block-like single crystals of X-ray quality. Yield 1.92 g (61%).…”

Reactions of the spiro monoanion [{(Me2N)Sb(μ-NCy)2}2Sb]− with alcohols and thiols (REH; E = O or S); syntheses of nido-[Sb3(μ-NCy)3(μ3-NCy)(ER)2] anions and the unique antimony(III) imido cubane [(2-NC5H4O)Sb(μ3-NCy)]4 (Cy= cyclohexyl)

“…The Sb-N bonds at the equatorial positions [range 2.075(6)-2.095(6) Å] are typical of those found in antimony() imido dimers, 9 whereas those at the axial positions [range 2.479(6)-2.543(6) Å] are similar to Sb-N donor-acceptor interactions found in adducts of SbCl 3 . 21 A similar diverse range of Sb-N bond lengths has been noted in the structure of the imido/nitrido antimony() complex [{ClSb(µ 18 However, in this case the underlying pattern of Sb-N bond lengths within the Sb 4 N 4 core (which is clearly identifiable in 4) is complicated by the presence of different substituents bonded to the Sb and N. The pattern of Sb-N bond lengths in 4 prompts an alternative description of the structure as a folded, 'tunnel-shaped' Sb 4 N 4 ring (shown in Fig. 5b).…”

Synthesis and Structure of Bismuth–Nitrogen Cage Compounds and Heterocubanes: [Cl-Bi(μ3-N-TMP)]4: A Dimer of a 1,3-Dichloro-cyclo-dibismadiazane

“…Especially, a series of group 14 elements containing heterocubanes featuring an E 4 N 4 core (E = Ge, Sn, and Pb) 46 have been reported, with the majority of examples of tin being published. 47−51 The class of group 15 heterocubanes includes, in particular, examples of azastibacubanes with a [Sb 4 N 4 ] core 19,52,53 as well as an anionic bimetallic (Li/Bi) compound of the type Li[Bi 2 (N t Bu) 4 ]. 18 S3 and S4 and Figure S3).…”