Synthesis and structures of salen-supported borates containing siloxides

Pingrong Wei, Timothy Keizer, David A. Atwood

Research output: Contribution to journalArticlepeer-review

35 Scopus citations


The ligand N,N″-bis(2-hydroxybenzylidene)diethylenetriamine (SalenN3H3) was used to prepare the compound SalenN3H{B(OMe2)}2 (1) which could, in turn, be used in the formation of SalenN3H{B(OSiPh3)2}2 (2). For comparative purposes, the compounds Salben{B(OSiPh3)2}2 (3) (Salben = N,N-butylenebis(2-hydroxybenzylideneamine), Salen(tBu){B(OSiPh3)2}2 (4) (Salen(tBu) = N,N′-ethylenebis(3,5-di-tert-butyl-2-hydroxybenzylideneamine) and Salben(tBu){B(OSiPh3)2}2 (5) (Salben(tBu) = N,N′-butylenebis(3,5-di-tert-butyl-2-hydroxy-benzylideneamine) were prepared. In reactions where the siloxide is (HO)2SiPh2, unique dimeric siloxide-bridged compounds result, [Salpten(tBu){B(O2SiPh2}]2 (6) and [SalenN3H{B(O2SiPh2)}]2 (7). Compound 6 possesses a zeolite-like cavity having a volume of 157 Å3. All of the compounds were characterized by physical (mp, analyses) and spectroscopic techniques (1H and 11B NMR, IR) and, in the case of 1, 3, 4, and 6, by X-ray crystallography.

Original languageEnglish
Pages (from-to)3914-3918
Number of pages5
JournalInorganic Chemistry
Issue number17
StatePublished - 1999

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry


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