Synthesis of ligands containing N-oxide donor atoms and their assembly into metallosupramolecular structures

Samantha J. Bullock, Lindsay P. Harding, Michelle P. Moore, Andrew Mills, Sean A.F. Piela, Craig R. Rice, Liz Towns-Andrews, Martina Whitehead

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

A series of ligands that contain both N-donor and N-oxide donor atoms have been synthesised and ligands L5, L6, L7 and L8 contain, 4, 6, 5, and 6 donor atoms respectively. The smallest ligand L5 forms a mononuclear complex with Cu2+ ([Cu(L5)(ClO4)2(MeCN)]) whereas L6 and L7 form dinuclear double helicates with Ni2+ and Cu2+ respectively ([Ni2(L6)2] 4+ and [Cu2(L7)2]4+). L8 forms a tetranuclear cyclic helicate upon reaction with Co 2+ ([Co4(L8)4]8+) and in all cases the complexes are characterised by single-crystal X-ray diffraction and ESI-MS. The N-oxide units imparts flexibility in the ligand strand and where the unoxidised ligand strand forms a cyclic helicate, the incorporation of an N-oxide unit allows the formation of the dinuclear double helicate.

Original languageEnglish
Pages (from-to)5805-5811
Number of pages7
JournalDalton Transactions
Volume42
Issue number16
DOIs
Publication statusPublished - 28 Apr 2013

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Oxides
Ligands
Atoms
Single crystals
X ray diffraction

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Bullock, Samantha J. ; Harding, Lindsay P. ; Moore, Michelle P. ; Mills, Andrew ; Piela, Sean A.F. ; Rice, Craig R. ; Towns-Andrews, Liz ; Whitehead, Martina. / Synthesis of ligands containing N-oxide donor atoms and their assembly into metallosupramolecular structures. In: Dalton Transactions. 2013 ; Vol. 42, No. 16. pp. 5805-5811.
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abstract = "A series of ligands that contain both N-donor and N-oxide donor atoms have been synthesised and ligands L5, L6, L7 and L8 contain, 4, 6, 5, and 6 donor atoms respectively. The smallest ligand L5 forms a mononuclear complex with Cu2+ ([Cu(L5)(ClO4)2(MeCN)]) whereas L6 and L7 form dinuclear double helicates with Ni2+ and Cu2+ respectively ([Ni2(L6)2] 4+ and [Cu2(L7)2]4+). L8 forms a tetranuclear cyclic helicate upon reaction with Co 2+ ([Co4(L8)4]8+) and in all cases the complexes are characterised by single-crystal X-ray diffraction and ESI-MS. The N-oxide units imparts flexibility in the ligand strand and where the unoxidised ligand strand forms a cyclic helicate, the incorporation of an N-oxide unit allows the formation of the dinuclear double helicate.",
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Synthesis of ligands containing N-oxide donor atoms and their assembly into metallosupramolecular structures. / Bullock, Samantha J.; Harding, Lindsay P.; Moore, Michelle P.; Mills, Andrew; Piela, Sean A.F.; Rice, Craig R.; Towns-Andrews, Liz; Whitehead, Martina.

In: Dalton Transactions, Vol. 42, No. 16, 28.04.2013, p. 5805-5811.

Research output: Contribution to journalArticle

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AU - Bullock, Samantha J.

AU - Harding, Lindsay P.

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AU - Mills, Andrew

AU - Piela, Sean A.F.

AU - Rice, Craig R.

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AU - Whitehead, Martina

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AB - A series of ligands that contain both N-donor and N-oxide donor atoms have been synthesised and ligands L5, L6, L7 and L8 contain, 4, 6, 5, and 6 donor atoms respectively. The smallest ligand L5 forms a mononuclear complex with Cu2+ ([Cu(L5)(ClO4)2(MeCN)]) whereas L6 and L7 form dinuclear double helicates with Ni2+ and Cu2+ respectively ([Ni2(L6)2] 4+ and [Cu2(L7)2]4+). L8 forms a tetranuclear cyclic helicate upon reaction with Co 2+ ([Co4(L8)4]8+) and in all cases the complexes are characterised by single-crystal X-ray diffraction and ESI-MS. The N-oxide units imparts flexibility in the ligand strand and where the unoxidised ligand strand forms a cyclic helicate, the incorporation of an N-oxide unit allows the formation of the dinuclear double helicate.

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