Issue 14, 2005
From the journal:

Dalton Transactions

Multidentate aryloxide and oxo-aryloxide complexes of antimony: synthesis and structural characterization of [η4-N(o-C6H4O)3]Sb(OSMe2), {{[η3-N(o-C6H4OH)(o-C6H4O)2]Sb}2(µ2-O)}2 and {[η3-PhN(o-C6H4O)2]Sb}4(µ3-O)2†

Joseph M. Tanski,a   Bryte V. Kellya  and  Gerard Parkin*a  

* Corresponding authors

a Department of Chemistry, Columbia University, New York, USA

Abstract

Antimony compounds that feature multidentate aryloxide ligands, namely [η4–N(o-C6H4O)3]Sb(OSMe2), {{[η3-N(o-C6H4OH)(o-C6H4O)2]Sb}2(µ2-O)}2, and {[η3-PhN(o-C6H4O)2]Sb}4(µ3-O)2 have been synthesized from N(o-C6H4OH)3 and PhN(o-C6H4OH)2 and structurally characterized by X-ray diffraction. While [η4-N(o-C6H4O)3]Sb(OSMe2) exists as a discrete mononuclear species, the oxo complexes {{[η3-N(o-C6H4OH)(o-C6H4O)2]Sb}2(µ2-O)}2 and {[η3-PhN(o-C6H4O)2]Sb}4(µ3-O)2 are multinuclear. Specifically, the dinuclear fragment {[η3-N(o-C6H4OH)(o-C6H4O)2]Sb}2(µ2-O)} exists in a dimeric form due to the bridging oxo ligand participating in an intermolecular hydrogen bonding interaction, while the dinuclear fragment {[η3-PhN(o-C6H4O)2]Sb}2(µ-O) exists in a dimeric form due to the bridging oxo ligand serving as a donor to the antimony of a second fragment. The structures of {{[η3-N(o-C6H4OH)(o-C6H4O)2]Sb}2(µ2-O)}2 and {[η3-PhN(o-C6H4O)2]Sb}4(µ3-O)2, therefore, indicate that an oxo ligand bridging two SbIII centers is sufficiently electron rich to serve as both an effective hydrogen bond acceptor and as a ligand for an additional SbIII center.

Graphical abstract: Multidentate aryloxide and oxo-aryloxide complexes of antimony: synthesis and structural characterization of [η4-N(o-C6H4O)3]Sb(OSMe2), {{[η3-N(o-C6H4OH)(o-C6H4O)2]Sb}2(µ2-O)}2 and {[η3-PhN(o-C6H4O)2]Sb}4(µ3-O)2

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Article information

DOI
https://doi.org/10.1039/B505308K
Article type
Paper
Submitted
14 Apr 2005
Accepted
27 May 2005
First published
14 Jun 2005

Dalton Trans., 2005, 2442-2447

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Multidentate aryloxide and oxo-aryloxide complexes of antimony: synthesis and structural characterization of [η4-N(o-C6H4O)3]Sb(OSMe2), {{[η3-N(o-C6H4OH)(o-C6H4O)2]Sb}2(µ2-O)}2 and {[η3-PhN(o-C6H4O)2]Sb}4(µ3-O)2

J. M. Tanski, B. V. Kelly and G. Parkin, Dalton Trans., 2005, 2442 DOI: 10.1039/B505308K

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