Unexpected formation of a fused double cycle trinuclear gold(i) complex supported by

Ortho -phenyl metallated aryl-diphosphine ligands and strong aurophilic interactions

Csaba Jobbágy, Péter Baranyai, Pál Szabó, Tamás Holczbauer, Barbara Rácz, Liang Li, Pance Naumov, Andrea Deák

Research output: Contribution to journalArticle

Abstract

The first homoleptic trinuclear arylgold(i) complex, [Au3(L′)2](NO3) (3), based on an ortho-phenyl metallated aryl-diphosphine ligand (L′ = o-C6H4PPh(C15H10O)PPh2), has been obtained through a new thermolytic reaction of the corresponding diauracycle, [Au2(L)2](NO3)2 (L = xantphos). The formation of 3 involves activation of the ortho-phenyl C-H bond of the xantphos ligands. The presence of Au-C bonds in this new gold-diphosphine cluster is not its only remarkable feature, since it also displays two 12-membered rings fused together and a linear {Au3} chain with aurophilic interactions. Complex 3 exhibits strong sky-blue luminescence that can be assigned to a triplet metal-metal (3MM) transition partially mixed with a ligand-to-metal-metal charge transfer (3LMMCT) transition related to the aurophilic bonding. This [Au3(L′)2]+ triauracycle also shows AIEE-activity, and is a selective luminescent chemosensor for metal ions.

Original languageEnglish (US)
Pages (from-to)12569-12575
Number of pages7
JournalDalton Transactions
Volume45
Issue number31
DOIs
StatePublished - Jan 1 2016

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Gold
Metals
Ligands
Transition metals
Metal ions
Charge transfer
Luminescence
Chemical activation
xantphos

ASJC Scopus subject areas

  • Inorganic Chemistry

Cite this

Unexpected formation of a fused double cycle trinuclear gold(i) complex supported by : Ortho -phenyl metallated aryl-diphosphine ligands and strong aurophilic interactions. / Jobbágy, Csaba; Baranyai, Péter; Szabó, Pál; Holczbauer, Tamás; Rácz, Barbara; Li, Liang; Naumov, Pance; Deák, Andrea.

In: Dalton Transactions, Vol. 45, No. 31, 01.01.2016, p. 12569-12575.

Research output: Contribution to journalArticle

Jobbágy, Csaba ; Baranyai, Péter ; Szabó, Pál ; Holczbauer, Tamás ; Rácz, Barbara ; Li, Liang ; Naumov, Pance ; Deák, Andrea. / Unexpected formation of a fused double cycle trinuclear gold(i) complex supported by : Ortho -phenyl metallated aryl-diphosphine ligands and strong aurophilic interactions. In: Dalton Transactions. 2016 ; Vol. 45, No. 31. pp. 12569-12575.
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