Silicon Bridged [1] ferrocenophanes

Relaxed but Highly Compact Diansa Metallacyclophanes

“…On the other hand, for oxidized anions [4] -, [5] -and [6] -there is no interaction between phosphorus and cobalt due to the absence of the P lone pair, which is bonded to the chalcogen atoms ( Figure 12). The interactions found in these compounds are between the P-C c bonds and the empty 4s orbital of cobalt with a similar energy of ca.…”

“…3 The first strained ferrocenophane with a C 2 Me 4 bridge, monoansa C 2 Me 4 [2]ferrocenophane, was reported in 1960 4 while, a more strained one with a single Si atom bridge was synthesized in 1975. 5 Later other related single atom bridging compounds with main group elements and transition group metals (bridging atom X= B, Ge, P, As, S, Se, Al, Ga, Sn, Ni, Mn, Ti, Zr, Hf), monoansa X[1]ferrocenophanes have been reported. 6 The single atom ansa causes high strain to the original structure of ferrocene, fc, therefore if a second ansa was targeted, this either was adjacent or a multiple atom ansa was required to produce a confronted diansa ferrocenophane.…”

Synthesis and Solution Self‐Assembly of Polyisoprene‐block‐poly(ferrocenylmethylsilane): A Diblock Copolymer with an Atactic but Semicrystalline Core‐Forming Metalloblock

“…Silicon-bridged [1]ferrocenophanes were first prepared in the mid 1970s by Osborne et al,8 and are now readily available on a significant scale. In solution, each of the cyclopentadienyl (Cp) rings of ferrocene can be lithiated by a strong Li-containing base such as n-butyllithium, catalysed by N,N,N',N'-tetramethylethylenediamine (TMEDA).…”

The galla[1]ferrocenophane {[dimethyl(2-pyridyl)silyl]bis(trimethylsilyl)methyl-κ2C,N}(ferrocene-1,1′-diyl)gallium(III)

“…A related galla[1]ferrocenophane was published by Lund et al (2006). For related literature, see: Bellas & Rehahn (2007) ;Foucher et al (1992); Herbert et al (2007); Lund et al (2007); Osborne & Whiteley (1975); Schachner et al (2005aSchachner et al ( , 2007.…”