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; Panče Naumov; Andrea Deák

doi:10.1039/c6dt01528j

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, Panče Naumov, Andrea Deák

Research output: Contribution to journal › Article › peer-review

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 language	English (US)
Pages (from-to)	12569-12575
Number of pages	7
Journal	Dalton Transactions
Volume	45
Issue number	31
DOIs	https://doi.org/10.1039/c6dt01528j
State	Published - 2016

ASJC Scopus subject areas

Inorganic Chemistry

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title = "Unexpected formation of a fused double cycle trinuclear gold(i) complex supported by: Ortho -phenyl metallated aryl-diphosphine ligands and strong aurophilic interactions",

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.",

author = "Csaba Jobb{\'a}gy and P{\'e}ter Baranyai and P{\'a}l Szab{\'o} and Tam{\'a}s Holczbauer and Barbara R{\'a}cz and Liang Li and Pan{\v c}e Naumov and Andrea De{\'a}k",

note = "Publisher Copyright: {\textcopyright} 2016 The Royal Society of Chemistry.",

year = "2016",

doi = "10.1039/c6dt01528j",

language = "English (US)",

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pages = "12569--12575",

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T1 - Unexpected formation of a fused double cycle trinuclear gold(i) complex supported by

T2 - Ortho -phenyl metallated aryl-diphosphine ligands and strong aurophilic interactions

AU - Jobbágy, Csaba

AU - Baranyai, Péter

AU - Szabó, Pál

AU - Holczbauer, Tamás

AU - Rácz, Barbara

AU - Li, Liang

AU - Naumov, Panče

AU - Deák, Andrea

PY - 2016

Y1 - 2016

N2 - 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.

AB - 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.

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Unexpected formation of a fused double cycle trinuclear gold(i) complex supported by: Ortho -phenyl metallated aryl-diphosphine ligands and strong aurophilic interactions

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