Carboxylate Bridged Octaphenyltetra-antimony(V) ‘Cage’ Compounds; [(SbPh₂)₄(µ-O)₄(µ-OH)₂(µ-O₂CR)₂·HO₂CR], where R = Me or t-Bu and the Crystal Structure of [(SbPh₂)₄(µ-O)₄(µ-OH)(µ-OEt)(µ-O₂CMe)₂]

Article type: Research Article

Authors: Gibbons, Martin N. | Abdul Malik, K.M. | Hursthouse, Michael B. | Bryan Sowerby, D.

Affiliations: Department of Chemistry, University of Nottingham, Nottingham NG7 2RD, UK | Department of Chemistry, University of Wales Cardiff, Cardiff CF1 3TB, UK

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Abstract: Reactions of [SbPh2BrO]2 with carboxylates did not give [SbPh2(O2CR)O]2, the expected substitution products, which are highly sensitive to hydrolysis by traces of moisture, and cage compounds containing an Sb4O6 unit were obtained instead. With silver acetate and sodium trimethylacetate the products were [(SbPh2)4(µ-O)4(µ-OH)2(µ-O2CR)2]·HO2CR, R = Me 1 and R = t-Bu 2, respectively. An unusual compound, [(SbPh2)4(µ-O)4(µ-OH)2 (µ-O2CMe)2] 3, in which one of the bridging hydroxo groups in 1 is replaced by an ethoxo group, was also isolated and its crystal structure determined.

DOI: 10.1080/10241229812331341409

Journal: Main Group Chemistry, vol. 2, no. 4, pp. 259-265, 1998