An expanded cavity hexaamine cage for copper(II)

Bernhardt, Paul V., Bramley, Richard, Geue, Rodney J., Ralph, Stephen F. and Sargeson, Alan M. (2007) An expanded cavity hexaamine cage for copper(II). Dalton Transactions, 2007 12: 1244-1249. doi:10.1039/b617153b

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Author Bernhardt, Paul V.
Bramley, Richard
Geue, Rodney J.
Ralph, Stephen F.
Sargeson, Alan M.
Title An expanded cavity hexaamine cage for copper(II)
Journal name Dalton Transactions   Check publisher's open access policy
ISSN 1477-9226
Publication date 2007-02-19
Sub-type Article (original research)
DOI 10.1039/b617153b
Open Access Status File (Publisher version)
Volume 2007
Issue 12
Start page 1244
End page 1249
Total pages 6
Place of publication Cambridge
Publisher Royal Soc Chemistry
Collection year 2008
Language eng
Subject C1
780103 Chemical sciences
250201 Transition Metal Chemistry
Abstract The crystal structure of the bicyclic hexaamine complex [Cu(fac-Me-5-tricosane-N-6)](ClO4)(2) center dot H2O (fac-Me-5-tricosane-N-6 = 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.
Keyword Chemistry, Inorganic & Nuclear
Jahn-teller Distortions
Macrobicyclic Hexaamines
Q-Index Code C1
Q-Index Status Confirmed Code

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Created: Mon, 18 Feb 2008, 16:34:30 EST