Ferrocene-based Lewis acids and Lewis pairs: Synthesis and structural characterization

Sudhakar, Pagidi; Thilagar, Pakkirisamy

doi:10.1007/s12039-012-0356-8

Cited by 8 publications

(3 citation statements)

References 12 publications

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“…4 As an example, Aldridge reported the use of FcB(C 6 F 5 ) 2 as a colorimetric and electrochemical indicator for N 2 O binding 5. Chiral B/P Lewis pairs ( B ) were developed by Aldridge6 and Thilagar,7 while Erker8 demonstrated the use of ferrocenylalkylborane ( C ) in the activation of H 2 . An alternative approach is to incorporate both the LA and LB moieties into a heterocyclic system.…”

Section: Methodsmentioning

confidence: 99%

Diferrocenophosphaborin: A Planar‐Chiral, Redox‐Active and Anion‐Responsive Ambiphilic Ligand

et al. 2015

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A new class of Janus-like ambiphilic ligands is introduced. The rigid diferrocene backbone in heterocycles 4-SnP and 4-BP creates an unprecedented chiral environment as demonstrated by multinuclear NMR and single-crystal X-ray studies. In addition, the ligands are redox-responsive and the Lewis acidic borane moiety in 4-BP can be exploited to further tune the properties: a clear decrease in the CO stretching frequency of a Vaska-type Rh(I) complex 5-BP is observed upon addition of fluoride ions. Thus, the Lewis acid and Lewis base sites influence each other and their strength can be modulated by redox chemistry and anion binding.

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Section: Methodsmentioning

confidence: 99%

Diferrocenophosphaborin: A Planar‐Chiral, Redox‐Active and Anion‐Responsive Ambiphilic Ligand

et al. 2015

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show abstract

Section: Methodsmentioning

confidence: 99%

Diferrocenophosphaborin: A Planar‐Chiral, Redox‐Active and Anion‐Responsive Ambiphilic Ligand

et al. 2015

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An ew class of Janus-like ambiphilic ligands is introduced. The rigid diferrocene backbone in heterocycles 4-SnP and 4-BP creates an unprecedented chiral environment as demonstrated by multinuclear NMR and single-crystal X-ray studies.I na ddition, the ligands are redox-responsive and the Lewis acidic borane moiety in 4-BP can be exploited to further tune the properties:aclear decrease in the CO stretching frequency of aV aska-type Rh I complex 5-BP is observed upon addition of fluoride ions.Thus,the Lewis acid and Lewis base sites influence each other and their strength can be modulated by redox chemistry and anion binding.

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“…The sulfinate group in the previously reported planar chiral ferrocenylphosphine (p S , S S )‐ 2 was replaced with a trimethylstannyl group by treatment with t ‐BuLi and subsequent addition of trimethyltin chloride at low temperature (Scheme ). Purification by flash column chromatography and subsequent recrystallization from hexanes afforded (p S )‐ 3 as an orange crystalline solid in 60 % yield.…”

Section: Figurementioning

confidence: 99%

Diferrocenylmercury‐Bridged Diphosphine: A Chiral, Ambiphilic, and Redox‐Active Bidentate Ligand

et al. 2018

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A diphosphine chelate ligand with a wide and flexible bite angle, a unique stereochemical environment, and redox‐active and ambiphilic character is reported. Initially generated as its HgCl2 complex by reaction of 1,2‐fc(PPh2)(SnMe3) (fc=ferrocenediyl) with HgCl2 in acetone, treatment with [n‐Bu4N]CN readily liberates the free chiral bidentate ligand. An intermolecular ClHg−Cl→Hgfc2 (2.9929(13) Å) interaction that is unprecedented in ambiphilic ligand chemistry is seen in the solid structure of Hg(fcPPh2)2⋅HgCl2 where the bridging mercury atom acts as a σ‐acceptor. Furthermore, a bis‐[Rh(COD)Cl] complex is introduced, which displays relatively short Rh⋅⋅⋅Hg contacts of 3.4765(5) and 3.4013(1) Å. Wiberg indices of 0.12 are determined for these Rh⋅⋅⋅Hg interactions and an AIM analysis reveals bond paths with an electron density ρ(r) of 1.2×10−2 and 1.4×10−2 e/a03 at the bond critical points.

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Ferrocene-based Lewis acids and Lewis pairs: Synthesis and structural characterization

Cited by 8 publications

References 12 publications

Diferrocenophosphaborin: A Planar‐Chiral, Redox‐Active and Anion‐Responsive Ambiphilic Ligand

Diferrocenophosphaborin: A Planar‐Chiral, Redox‐Active and Anion‐Responsive Ambiphilic Ligand

Diferrocenophosphaborin: A Planar‐Chiral, Redox‐Active and Anion‐Responsive Ambiphilic Ligand

Diferrocenylmercury‐Bridged Diphosphine: A Chiral, Ambiphilic, and Redox‐Active Bidentate Ligand

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