Cu-II complexes of isomeric ligands derived from 2-pyridine-carboxaldehyde and m- or p-xylylenediamine: an intermolecularly pi-stacked dinuclear species and a trinuclear circular helicate that encapsulates a chloride ion

Lee, Young Hoon, Woo, Arim, Won, Mi Seon, Cho, Jeong Hwan, Clegg, Jack K., Hayami, Shinya, Thuery, Pierre, Lindoy, Leonard F. and Kim, Yang (2012) Cu-II complexes of isomeric ligands derived from 2-pyridine-carboxaldehyde and m- or p-xylylenediamine: an intermolecularly pi-stacked dinuclear species and a trinuclear circular helicate that encapsulates a chloride ion. Australian Journal of Chemistry, 65 12: 1587-1593. doi:10.1071/CH12368


Author Lee, Young Hoon
Woo, Arim
Won, Mi Seon
Cho, Jeong Hwan
Clegg, Jack K.
Hayami, Shinya
Thuery, Pierre
Lindoy, Leonard F.
Kim, Yang
Title Cu-II complexes of isomeric ligands derived from 2-pyridine-carboxaldehyde and m- or p-xylylenediamine: an intermolecularly pi-stacked dinuclear species and a trinuclear circular helicate that encapsulates a chloride ion
Formatted title
Cu-II complexes of isomeric ligands derived from 2-pyridine-carboxaldehyde and m- or p-xylylenediamine: an intermolecularly π-stacked dinuclear species and a trinuclear circular helicate that encapsulates a chloride ion
Journal name Australian Journal of Chemistry   Check publisher's open access policy
ISSN 0004-9425
1445-0038
Publication date 2012-10-31
Sub-type Article (original research)
DOI 10.1071/CH12368
Volume 65
Issue 12
Start page 1587
End page 1593
Total pages 7
Place of publication Collingwood, VIC, Australia
Publisher CSIRO Publishing
Collection year 2013
Language eng
Formatted abstract
Di- and trinuclear CuII complexes [Cu2L1(2,2′-bipyridine)2Cl2]Cl2·11H2O and [Cu3(L2)3Cl3]Cl3·1.25MeOH·4H2O incorporating the isomeric Schiff base ligands 1,1′-(1,4-phenylene)bis(N-(pyridin-2-ylmethylene)methanamine) (L1) and 1,1′-(1,4-phenylene)bis(N-(pyridin-2-ylmethylene)methanamine) (L2), each incorporating two separated α-diimine coordination domains, have been synthesised and their X-ray crystal structures and variable temperature magnetic properties determined. The X-ray crystal structure of [Cu2L1(2,2′-bipyridine)2Cl2]Cl2·11H2O shows that each CuII centre is bound to two nitrogen atoms from L1, two from a bipyridine ligand, and a chloride anion. Intramolecular π-stacking interactions are present between the central phenyl ring of L1 and both rings of each bipyridine ligand. The structure of [Cu3(L2)3Cl3]Cl3·1.25MeOH·4H2O shows an unusual trinuclear circular helicate arrangement with approximate C3-symmetry. A chloride anion is encapsulated in the structure being bound by six non-classical hydrogen bond interactions. Variable temperature magnetic susceptibility measurements indicated the presence of weak antiferromagnetic behaviour for [Cu2L1(2,2′-bipyridine)2Cl2]Cl2·11H2O and weak ferromagnetic behaviour for [Cu3(L2)3Cl3]Cl3·1.25MeOH·4H2O.
Keyword Biacetyl-bis-methylimine
Spin-crossover behavior
Electrochemical properties
Copper(Ii) complexes
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2013 Collection
School of Chemistry and Molecular Biosciences
 
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