An expanded cavity hexaamine cage for copper(II)

Paul V. Bernhardt; Richard Bramley; Rodney J. Geue; Stephen F. Ralph; Alan M. Sargeson

doi:10.1039/b617153b

An expanded cavity hexaamine cage for copper(II)

Paul V. Bernhardt^*, Richard Bramley, Rodney J. Geue, Stephen F. Ralph, Alan M. Sargeson

^*Corresponding author for this work

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

21 Citations (Scopus)

Abstract

The crystal structure of the bicyclic hexaamine complex [Cu(fac-Me ₅-tricosane-N₆)](ClO₄)₂· H₂O (fac-Me₅-tricosane-N₆ = facial-1,5,9,13,20-pentamethyl-3,7,11,15,18,22-hexaazabicyclo[7.7.7]tricosane) at 100 K defines an apparently tetragonally compressed octahedral geometry, which is attributed to a combination of dynamic interconversion and static disorder between two tetragonally elongated structures sharing a common short axis. This structure is fluxional at 60 K and above as shown by EPR spectroscopy. Aqueous cyclic voltammetry reveals that a remarkably stable Cu^I form of the complex is stabilised by the encapsulating nature of the expanded cage ligand.

Original language	English
Pages (from-to)	1244-1249
Number of pages	6
Journal	Dalton Transactions
Issue number	12
DOIs	https://doi.org/10.1039/b617153b
Publication status	Published - 2007

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title = "An expanded cavity hexaamine cage for copper(II)",

abstract = "The crystal structure of the bicyclic hexaamine complex [Cu(fac-Me 5-tricosane-N6)](ClO4)2· H2O (fac-Me5-tricosane-N6 = facial-1,5,9,13,20-pentamethyl-3,7,11,15,18,22-hexaazabicyclo[7.7.7]tricosane) at 100 K defines an apparently tetragonally compressed octahedral geometry, which is attributed to a combination of dynamic interconversion and static disorder between two tetragonally elongated structures sharing a common short axis. This structure is fluxional at 60 K and above as shown by EPR spectroscopy. Aqueous cyclic voltammetry reveals that a remarkably stable CuI form of the complex is stabilised by the encapsulating nature of the expanded cage ligand.",

author = "Bernhardt, \{Paul V.\} and Richard Bramley and Geue, \{Rodney J.\} and Ralph, \{Stephen F.\} and Sargeson, \{Alan M.\}",

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doi = "10.1039/b617153b",

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journal = "Dalton Transactions",

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publisher = "Royal Society of Chemistry",

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T1 - An expanded cavity hexaamine cage for copper(II)

AU - Bernhardt, Paul V.

AU - Bramley, Richard

AU - Geue, Rodney J.

AU - Ralph, Stephen F.

AU - Sargeson, Alan M.

PY - 2007

Y1 - 2007

N2 - The crystal structure of the bicyclic hexaamine complex [Cu(fac-Me 5-tricosane-N6)](ClO4)2· H2O (fac-Me5-tricosane-N6 = facial-1,5,9,13,20-pentamethyl-3,7,11,15,18,22-hexaazabicyclo[7.7.7]tricosane) at 100 K defines an apparently tetragonally compressed octahedral geometry, which is attributed to a combination of dynamic interconversion and static disorder between two tetragonally elongated structures sharing a common short axis. This structure is fluxional at 60 K and above as shown by EPR spectroscopy. Aqueous cyclic voltammetry reveals that a remarkably stable CuI form of the complex is stabilised by the encapsulating nature of the expanded cage ligand.

AB - The crystal structure of the bicyclic hexaamine complex [Cu(fac-Me 5-tricosane-N6)](ClO4)2· H2O (fac-Me5-tricosane-N6 = facial-1,5,9,13,20-pentamethyl-3,7,11,15,18,22-hexaazabicyclo[7.7.7]tricosane) at 100 K defines an apparently tetragonally compressed octahedral geometry, which is attributed to a combination of dynamic interconversion and static disorder between two tetragonally elongated structures sharing a common short axis. This structure is fluxional at 60 K and above as shown by EPR spectroscopy. Aqueous cyclic voltammetry reveals that a remarkably stable CuI form of the complex is stabilised by the encapsulating nature of the expanded cage ligand.

UR - https://www.scopus.com/pages/publications/33947136397

U2 - 10.1039/b617153b

DO - 10.1039/b617153b

M3 - Article

SN - 1477-9226

SP - 1244

EP - 1249

JO - Dalton Transactions

JF - Dalton Transactions

IS - 12

ER -

An expanded cavity hexaamine cage for copper(II)

Abstract

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