A three-coordinate iron–silylene complex stabilized by ligand–ligand dispersion forces

Abstract

Please check this proof carefully. Our staff will not read it in detail after you have returned it.Translation errors between word-processor files and typesetting systems can occur so the whole proof needs to be read. Please pay particular attention to: tabulated material; equations; numerical data; figures and graphics; and references. If you have not already indicated the corresponding author(s) please mark their name(s) with an asterisk. Please e-mail a list of corrections or the PDF with electronic notes attached -do not change the text within the PDF file or send a revised manuscript. Corrections at this stage should be minor and not involve extensive changes. All corrections must be sent at the same time.Please bear in mind that minor layout improvements, e.g. in line breaking, table widths and graphic placement, are routinely applied to the final version.

Competition of van der Waals and chemical forces on gold–sulfur surfaces and nanoparticles

“…Significant enhancement to the stability of transition-metal complexes from dispersion forces has also been observed. 12 In some cases, individual atom-atom dispersion forces are large, whilst in others, heavy groups on each side of the bond interact with each other in such a way that the forces are all channelled through the central bond, giving an apparently large atom-atom dispersion interaction. Fig.…”

A Free Silanide from Nucleophilic Substitution at Silicon(II)

“…The solid‐state structure of 4 contains two independent molecules in the unit cell and confirms the anionic nature of the complex, displaying Si−Fe distances of 2.4482(12) and 2.4589(12) Å. Only one high‐spin Fe II complex of a monodentate silylene is known, which forms at low temperatures . A small number of high‐spin, monodentate, silyliron complexes have been reported, by the groups of Tilley, Goff, and Tatsumi, for simple SiR 3 silyls (R=H, alkyl, aryl, SiMe 3 ), but 4 is the first nitrogen‐supported silyl complex of this kind.…”

“…Finally,c omplexation of 1 to Fe II Cl 2 in THF afforded the anionic dichloroferrate complex 4.T he 1 HNMR spectrumf eatures one set of six paramagnetically shiftedr esonances in addition to that of the K + (18-c-6)c ounterion, suggesting retention of the local C 3 symmetry.T he solid-state structure of 4 containst wo independent molecules in the unit cell and confirms the anionic nature of the complex, displaying SiÀFe distanceso f2 .4482 (12) and 2.4589 (12) .O nly one high-spinF e II complex of am onodentate silylene is known, whichf orms at low temperatures. [22] As mall number of high-spin, monodentate, silyliron complexes have been reported, by the groups of Tilley,G off, and Ta tsumi, for simple SiR 3 silyls (R = H, alkyl, aryl, SiMe 3 ), [23] but 4 is the first nitrogen-supported silyl complex of this kind.…”

N‐Heterocyclic Silylenes as Ligands in Transition Metal Carbonyl Chemistry: Nature of Their Bonding and Supposed Innocence

“…Substitution of the cod ligand by a third silylene, as observed for t Bu 2 NHSi H2 and t Bu 2 NHSi, was not successful . For the Dipp‐substituted silylene, more examples exist, for example, a three‐coordinate iron(II) silylene complex [Fe(N(SiMe 3 ) 2 ) 2 (Dipp 2 NHSi)] reported by Layfield et al . Another interesting example is the complex [( η 5 ‐C 5 H 5 ) 2 V(Dipp 2 NHSi)], which was obtained by reaction of the silylene with vanadocene, as it was not possible to obtain the analogous product from the corresponding carbene Dipp 2 Im …”