Formation of antimony–sulfur double‐bond compounds and their trapping with nitrile oxides

Abstract

ABSTRACT:The reaction of a highly crowded dihydrostibine [2,4,6-tris[bis(trimethylsilyl)

Nonconventional Behavior of NCN-Chelated Organoantimony(III) Sulfide and Isolation of Cyclic Organoantimony(III) Bis(pentasulfide)

“…In the 1 H NMR spectra, an AX pattern was obtained for the NCH 2 moieties and two signals in a 1:1 intensity ratio were detected for the NMe 2 groups, indicating a nonsymmetric environment around the central atom and hindered rotation around the Sb−C bond due to the Sb−N intramolecular interactions. Similar results were obtained for the monomeric LSbSe and LSbTe compounds, pointing to a possible monomeric structure of 1 (LSbS, Chart ) in a CDCl 3 solution. The formation of monomeric structure LSbS was also observed in an acetonitrile solution in the case of electrospray mass spectral measurement (Figure S1a in the Supporting Information).…”

Covalently bonded compounds of heavy group 15/16 elements – Synthesis, structure and potential application in material sciences

“…the Sb-Te in ArSbTe bond distance are slightly shorter than those reported for selena-and telluradistiborane containing three-membered Sb 2 E rings (E = Se, Te)[123,124,131] and for…”

Synthesis and Structure of Organoantimony(III) Compounds Containing Antimony−Selenium and −Tellurium Terminal Bonds

“…Power and Tokitoh have reported the syntheses of kinetically stabilized trans -distibenes and -dibismuthenes ( trans -RMMR, M = Sb, Bi and R = bulky ligand; Chart ) . Reactions of double-bonded BbtMMBbt and TbtMMTbt compounds (Bbt = 2,6-bis[bis(trimethylsilyl)methyl]-4-[tris(trimethylsilyl)methyl]phenyl; Tbt = 2,4,6-tris[bis(trimethylsilyl)methyl]phenyl) with elemental chalcogens give the dimeric centrosymmetric oxides (BbtMO) 2 and (TbtMO) 2 with central four-membered rings in the case of oxygen and mixtures of cyclic sulfides and polysulfides in the reaction with sulfur . On the other hand, reactions with selenium and Bu 3 PTe yielded selena- and telluradistibarane and selena- and telluradibismirane as examples of the heaviest three-membered heteroatom ring systems reported to date. , Trimeric (TbtMSe) 3 (M = Sb, Bi) and (BbtSbSe) 3 compounds with a six-membered core have recently been obtained as stable compounds. ,, Nevertheless, any evidence for organoantimony compounds bearing an unsupported terminal Sb−Se or Sb−Te double bond is still missing.…”