Self-assembly of a High-Nuclearity Chloride-Centered Copper(II) Cluster. Structure and Magnetic Properties of [Au(PPh3)2][trans-Cu6(m-OH)6{m-(3,5-CF3)2pz}6Cl.

Mohamed, A. A.; Burini, Alfredo; Galassi, Rossana; Paglialunga, D.; Galan Mascaros, J. R.; Dunbar, K. R.; FACKLER Jr, J. P.

doi:10.1021/ic901562d

A chloride-centered hexanuclear copper(II) pyrazolate [Au(PPh3)2]-[trans-Cu6(μ-OH)6{μ-(3,5-CF3)2pz}6Cl] is isolated from the reaction of the trinuclear copper(I) pyrazolate [Cu3{μ-(CF3)2pz}3] with PPh3AuCl and Ph3P in moist air. The six copper atoms are bridged by pyrazolate and hydroxyl ligands, above and below the copper plane. The chloride anion exists at the center of the planar cavity formed by the copper atoms with Cu-Cl distances of 3.02-3.13 Å. The magnetic susceptibility measurements show a strong antiferromagnetic coupling between the copper centers with an estimated exchange constant of J ~ 650 cm-1.

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Titolo:	Self-assembly of a High-Nuclearity Chloride-Centered Copper(II) Cluster. Structure and Magnetic Properties of [Au(PPh3)2][trans-Cu6(m-OH)6{m-(3,5-CF3)2pz}6Cl.
Autori:	A. A. MOHAMED BURINI, Alfredo GALASSI, Rossana D. PAGLIALUNGA J. R. GALAN MASCAROS K. R. DUNBAR J. P. FACKLER Jr mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2007
Rivista:	INORGANIC CHEMISTRY
Abstract:	A chloride-centered hexanuclear copper(II) pyrazolate [Au(PPh3)2]-[trans-Cu6(μ-OH)6{μ-(3,5-CF3)2pz}6Cl] is isolated from the reaction of the trinuclear copper(I) pyrazolate [Cu3{μ-(CF3)2pz}3] with PPh3AuCl and Ph3P in moist air. The six copper atoms are bridged by pyrazolate and hydroxyl ligands, above and below the copper plane. The chloride anion exists at the center of the planar cavity formed by the copper atoms with Cu-Cl distances of 3.02-3.13 Å. The magnetic susceptibility measurements show a strong antiferromagnetic coupling between the copper centers with an estimated exchange constant of J ~ 650 cm-1.
Handle:	http://hdl.handle.net/11581/226484
Appare nelle tipologie:	Articolo

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