An Iron Wheel on a Tin Drum: A Novel Assembly of a Hexaferrocene Unit on a Tin–Oxygen Cluster

Abstract

Based on reactions known in organotin chemistry, the robust hexaferrocene assembly [{BuSn(O)OC(O)Fc}6] is obtained in quantitative yield by the reaction of two commercially available reactants. The X‐ray crystal structure (see picture) shows a symmetric giant wheel arrangement of the ferrocene units attached in a cyclic manner to a central drumlike stannoxane core. Cyclic voltammetric studies show a single quasireversible oxidation peak.

Imine-functionalized, fluorescent organomercury and -tellurium compounds

“…[2][3][4][5]. In all the cases the geometry around tellurium can be considered as distorted trigonal bipyramidal if one takes into account the stereochemically active lone pair.…”

“…Cyclophosphazenes and organostannoxanes have, for example, been used as scaffolds to support a variety of interesting groups that are electrochemically or photochemically active [2,3]. Organostannoxanes containing photoactive substituents have been shown to possess interesting photochemical behavior in solution as well as in the solid state [3][4][5][6][7]. Such a methodology has not yet been applied to the realm of organotellurium chemistry.…”

Chiral self-assembly of methyltin(IV)-naproxenates: Combining dative Sn–O bonds, secondary Sn⋯O interactions and C–H⋯O hydrogen bonding to make an inter-helical meander-shaped network and a cross-linked Z-shaped ribbon

“…In 1988, Lockhart established that the di-n-butyltin(IV) 3-thiopropionate exists in either oligomeric or monomeric form in solution and crystallizes as a cyclic hexamer [2]. Interestingly, in spite of these early findings only few organotin(IV)-macrocycles have been created [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18], whereas a rich structural chemistry of stannoxane and distannoxane units containing supramolecules has been emerged [19][20][21][22][23][24][25][26][27][28][29]. Our entry in the field of organotin supramolecular chemistry began in 4 [30] and dimeric [Me 2 Sn(PhN 2 O 2 ) 2 ] 2 [31].…”

Multi-functional architectures supported on organostannoxane scaffolds

“…This has been achieved in near quantitative yields (scheme 4). [38][39] These compounds represent inorganic-core supported multi-ferrocene assemblies. These are electrochemically quite robust and do not decompose under cyclic voltammetric conditions.…”