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The number of ferrocenyl units in the multiredox assembly is readily varied by stoichiometric control as well as by the choice of the organotin precursors. Thus, the reaction of the diorganotin oxides, R<jats:sub>2<\/jats:sub>SnO (R=Ph, <jats:italic>n<\/jats:italic>Bu and <jats:italic>t<\/jats:italic>Bu) with ferrocene carboxylic acid affords tetra\u2010, di\u2010, and mononuclear derivatives [{Ph<jats:sub>2<\/jats:sub>Sn[OC(O)Fc]<jats:sub>2<\/jats:sub>}<jats:sub>2<\/jats:sub>] (<jats:bold>1<\/jats:bold>), [{[<jats:italic>n<\/jats:italic>Bu<jats:sub>2<\/jats:sub>SnOC(O)Fc]<jats:sub>2<\/jats:sub>O}<jats:sub>2<\/jats:sub>] (<jats:bold>2<\/jats:bold>), [<jats:italic>n<\/jats:italic>Bu<jats:sub>2<\/jats:sub>Sn{OC(O)Fc}<jats:sub>2<\/jats:sub>] (<jats:bold>3<\/jats:bold>), [{<jats:italic>t<\/jats:italic>Bu<jats:sub>2<\/jats:sub>Sn(OH)OC(O)Fc}<jats:sub>2<\/jats:sub>] (<jats:bold>4<\/jats:bold>), and [<jats:italic>t<\/jats:italic>Bu<jats:sub>2<\/jats:sub>Sn{OC(O)Fc}<jats:sub>2<\/jats:sub>] (<jats:bold>5<\/jats:bold>) (Fc=\u03b7<jats:sup>5<\/jats:sup>C<jats:sub>5<\/jats:sub>H<jats:sub>4<\/jats:sub>\u2010Fe\u2010\u03b7<jats:sup>5<\/jats:sup>C<jats:sub>5<\/jats:sub>H<jats:sub>5<\/jats:sub>). The reaction of triorganotin oxides, R<jats:sub>3<\/jats:sub>SnOSnR<jats:sub>3<\/jats:sub> (R=<jats:italic>n<\/jats:italic>Bu and Ph) with ferrocene carboxylic acid leads to the formation of the mono\u2010nuclear derivatives [Ph<jats:sub>3<\/jats:sub>SnOC(O)Fc] (<jats:bold>6<\/jats:bold>) and [{<jats:italic>n<\/jats:italic>Bu<jats:sub>3<\/jats:sub>SnOC(O)Fc}<jats:sub><jats:italic>n<\/jats:italic><\/jats:sub>] (<jats:bold>7<\/jats:bold>). Molecular structures of the compounds <jats:bold>1<\/jats:bold>\u2013<jats:bold>4<\/jats:bold> and <jats:bold>6<\/jats:bold> have been determined by single\u2010crystal X\u2010ray analysis. The molecular structure of compound <jats:bold>1<\/jats:bold> is new among organotin carboxylates. In this compound, ferrocenyl carboxylates are involved in both chelating and bridging coordination modes to the tin atoms to form an eight\u2010membered cyclic structure. In all of these compounds, the acidic protons of the cyclopentadienyl groups are hydrogen bonded to the carboxylate oxygens (C\uf8ffH\u22c5\u22c5\u22c5O) to form rich supramolecular assemblies. In addition to this, \u03c0\u2013\u03c0, T\u2010shaped, L\u2010shaped, and side\u2010to\u2010face stacking interactions involving ferrocenyl groups also occur. Compound <jats:bold>6<\/jats:bold> shows an interesting and novel intermolecular CO<jats:sub>2<\/jats:sub>\u2013\u03c0 stacking interaction. Electrochemical analysis of the compounds <jats:bold>1<\/jats:bold>\u2013<jats:bold>4<\/jats:bold>, <jats:bold>6<\/jats:bold>, and <jats:bold>7<\/jats:bold> shows a single, quasi\u2010reversible oxidation peak corresponding to the simultaneous oxidation of four, two, and one ferrocenyl substituents, respectively. Compound <jats:bold>5<\/jats:bold> shows two quasi\u2010reversible oxidation peaks. This is attributed to the positional difference among the ferrocenyl substituents on the tin atom. Additionally, while compounds <jats:bold>2<\/jats:bold> and <jats:bold>4<\/jats:bold> are electrochemically quite robust and do not decompose even after ten continuous CV cycles, compounds <jats:bold>1<\/jats:bold>, and <jats:bold>3<\/jats:bold>, <jats:bold>5<\/jats:bold>\u2013<jats:bold>7<\/jats:bold> start to show decomposition after five cycles.<\/jats:p>","DOI":"10.1002\/chem.200500316","type":"journal-article","created":{"date-parts":[[2005,7,8]],"date-time":"2005-07-08T09:15:24Z","timestamp":1120814124000},"page":"5437-5448","source":"Crossref","is-referenced-by-count":76,"title":["Organostannoxane\u2010Supported Multiferrocenyl Assemblies: Synthesis, Novel Supramolecular Structures, and 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