Alkylderivatives of Stanna-closo-dodecaborate

Stanna-closo-dodecaborate Chemistry

“…treatment of the stannaborate dianion with organic halides), we could synthesize a number of different organic derivatives such as [CH 2 (SnB 11 H 11 ) 2 ] 2-, [CH 2 dCHCH 2 -SnB 11 H 11 ]and [CHtCCH 2 -SnB 11 H 11 ] -. 66 Additionally, we prepared a series of ω-(stannadodecaborato)-1-(trialkylammonio)alkane zwitterions by reacting [SnB 11 H 11 ] 2with different (ω-iodoalkyl)trialkylammonium iodides (eq 19). 67 These easily accessible model systems were investigated with regard to their crystallographic properties.…”

“…Using Todd's approach (viz. treatment of the stannaborate dianion with organic halides), we could synthesize a number of different organic derivatives such as [CH 2 (SnB 11 H 11 ) 2 ] 2- , [CH 2 CHCH 2 −SnB 11 H 11 ] - and [CH⋮CCH 2 −SnB 11 H 11 ] - …”

Stannaborate Chemistry: Nucleophilic Substitution at the Cluster Sphere

“…So far it is well established that the dianion [SnB 11 H 11 ] 2Ϫ acts as a nucleophile with alkyl iodides or reactive alkyl bromides like propargyl bromide. [6] The reaction with alkyl iodides is equivalent to an oxidation of the tin nucleus deduced from 119 Mössbauer spectroscopy studies. [7] In this publication, we present the nucleophilic substitution at the tin center in alkylated stanna-closo-dodecaborate derivatives.…”

Ruthenium Complexes with the Stanna‐closo‐dodecaborate Ligand: Coexistence of η1(Sn) and η3(BH) Coordination

“…Elemental analyses were performed by the Institut für Anorganische Chemie Universität Tübingen using a Vario EL analyser. Chemicals were purchased commercially except Na 2 [SnB 11 H 11 ],23 [Bu 3 MeN] 2 [SnB 11 H 11 ],19 [RuCl 2 (PPh 3 ) 3 ],24 and [RuCl 2 (dppb)(PPh 3 )],25 which were prepared according to literature methods or modifications thereof.…”