Isolable Boron Persulfide: Activation of Elemental Sulfur with a 2-Chloro-Azaborolyl Anion.

  title={Isolable Boron Persulfide: Activation of Elemental Sulfur with a 2-Chloro-Azaborolyl Anion.},
  author={Peixing Chen and C. Cui},
  volume={22 9},
The novel boron persulfide 2 LB(η(2) -S2 ) (L=[ArNC(R)CHC(R)](-) ; Ar=2,6-Me2 C6 H3 , R=tBu) was obtained by the reaction of the 2-chloro-azaborolyl anion 1 (LBCl)K(THF) with 0.25 equiv of elemental sulfur (S8 ). Persulfide 2 is labile in solution and could be converted to the cyclic tetrasulfide LBS4 (3) and hexasulfide LBS6 (4) in the presence of sulfur at room temperature and 50 °C, respectively. Desulfination of 2 with triphenylphosphine resulted in the formation of the thioxoborane LB=S (5… Expand
4 Citations
Reactivity of the 2‐Chloroazaborolyl Anion
The reactivity of 2-chloro-azaborolyl anion (LBCl)[K(THF)] (1, L = [ArNC(R)CHC(R)]-; Ar = 2,6-Me2C6H3, R = t-Bu) was investigated. Treatment of 1 with a diazomethane resulted in the formation of aExpand
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Azaborolyl anions, the five-membered BN heterocycles, have attracted a considerable attention due to their aromaticity and isoelectronic relationship with ubiquitous cyclopentadienyl ligands. BesidesExpand
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