A Mixed‐Valence Tin–Oxygen Cluster Containing Six Peripheral Ferrocene Units

Abstract

Dealkylation of nBu2SnO with 1,1′‐ferrocenedicarboxylic acid gives a mixed‐valence Sn${{{{\rm {\rm II}}\hfill \atop 4\hfill}}}$‐Sn${{{{\rm {\rm III}}\hfill \atop 4\hfill}}}$O4 cluster. The cubic tin–oxygen core is connected to six ferrocene units through twelve carboxylate bridges in such a way that the iron centers occupy the vertices of a regular octahedron (see structure: Fe Red; C gray; O green; Sn brown).

Syntheses, Structures, and Optical Properties of β‐Ferrocenylacrylate Metal Polymers

“…It is apparent that these shifts can be attributed to the influence of the central metal ions, and this is consistent with the previous results of transition metal-ferrocenyl systems. [9,37] The reason for this is that the conjugated π-electron systems between the two metals allow communication, [38] and the electron-withdrawing nature of the coordinated metal centers makes the ferrocene unit harder to oxidize. [39] …”

“…[1][2][3][4][5] Due to the fascinating properties of the ferrocene moiety as well as the versatile coordination modes [6] and strong coordinating capability of the carboxylate groups, ferrocenecarboxylate compounds have been extensively used as functional ligands. [7][8][9][10][11][12][13][14] Furthermore, the introduction of ferrocenyl carboxylate groups into metal-organic frameworks provides an effective way to prepare new functional materials with unique features.…”

Metal chalcogenide nanoclusters with ‘tailored’ surfaces via ‘designer’ silylated chalcogen reagents

“…The latter has been well developed for the related carboxylate ligands CpFe(h 5 -C 5 H 4 C(O)O − ) and 1,1 -Fc(C(O)O − ) 2 on metal oxide clusters (Chandrasekhar et al 2000;Zheng et al 2004). Stannoxane frameworks, for instance, are relatively robust and themselves not redox active, thus the core does not interfere with the redox processes of the surface ferrocenyl units (Chandrasekhar et al 2000).…”

“…Cyclic voltammetry of each of these compounds shows a single reversible oxidation, with all six ferrocenyl units oxidized at the same potential, even after several cycles. Unlike the synthesis of the drum-like ferrocenyl assemblies from the 1 : 1 addition of ferrocenyl carboxylic acid to n-BuSn(O)OH in refluxing benzene, the mixed valence [Sn 8 O 4 OC(O)(C 5 H 4 )Fe(C 5 H 5 ) 6 ] (figure 7) was prepared via solvothermal methods (Zheng et al 2004). The central core comprised four endo Sn 3+ atoms, four exo Sn 2+ atoms and four m 4 -O atoms occupying the four corners of a distorted cube.…”

Syntheses, Characterization and Crystal Structures of 1D and 2D Organotin Polymers Containing 3-Methyladipic Acid Ligand

“…Recently, solvothermal synthesis (STS) has become an efficient method for preparing novel coordination complexes using the simple inorganic or organometallic compounds and organic ligands as starting materials. STS is also a superb technique for crystallizing products that hardly arise from other synthetic methods [26]. In our previous work, we have obtained a 12-member cyclic organotin complex [27], a 1D helical chain [28], a 3D corrugated sheet polymer with (±)-phenylsuccinic acid [29] using the STS method.…”