Pentamethyl- and 1,2,4-tri(tert-butyl)cyclopentadienyl containing p-block complexes – differences and similarities

Abstract

The sterically encumbered cyclopentadienyl ligand 1,2,4-(Me3C)3C5H2 (Cp′′′) effectively stabilizes the main group metals of Al, Ga, In, Ge and Sn with σ- or π-bonds.

One silicon atom of bis(silylene) functions as a selective Lewis base under adduct formation with a Lewis acid

“…The starting material LSiCl, 18 LSi-SiL, 20 η 5 -Cp′′′AlX 2 and [η 1 -Cp′′′Ga(μ-Cl)Cl] 2 were synthesized by following the literature procedure. 24 All other reagents were used as received.…”

Designing a ferrocene biphenyl pyridine modified electrode for the non-enzymatic electrochemical detection of catechol

“…Cell refinements and data reductions were carried out using the Apex2 package. 27 The SHELXS-97 program, with the Olex2 graphical user interface, was utilized for the initial structural solution, followed by structural refinements conducted using Shelxl-2018. 28,29 A direct method was employed to determine the position of the atoms; the details are summarized in Table S1 (ESI †).…”

Reduction-induced hapticity increase in a silacycle-bridged biaryl-based ligand coordinated to an iron center

“…17 A similar increase in hapticity of cyclopentadienyl-type ligands from η 1 to η 5 upon reduction has also been demonstrated for Ga compounds. 18 Considering these results, the generation of 3 from 2 upon reduction is an additional rare example of hapticity increase in transition-metal complexes.…”