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A d10 Ag(i) amine-borane σ-complex and comparison with a d8 Rh(i) analogue: Structures on the η1 to η22 continuum

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JournalDalton Transactions
DateAccepted/In press - 1 Apr 2019
DatePublished (current) - 23 Apr 2019
Issue number26
Volume48
Number of pages6
Pages (from-to)9776-9781
Original languageEnglish

Abstract

H3B·NMe3 σ-complexes of d8 [(L1)Rh][BArF4] and d10 [(L1)Ag][BArF4] (where L1 = 2,6-bis-[1-(2,6-diisopropylphenylimino)ethyl]pyridine) have been prepared and structurally characterised. Analysis of the molecular and electronic structures reveal important but subtle differences in the nature of the bonding in these σ-complexes, which differ only by the identity of the metal centre and the d-electron count. With Rh the amine-borane binds in an η22 fashion, whereas at Ag the unsymmetrical {Ag⋯H3B·NMe3} unit suggests a structure lying between the η22 and η1 extremes.

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