Synthesis and characterisation of tin(IV) fluoride complexes of phosphine and arsine oxide ligands
Synthesis and characterisation of tin(IV) fluoride complexes of phosphine and arsine oxide ligands
The pseudooctahedral complexes [SnF4L2] (L = Ph3PO, Ph3AsO, Me3PO, Me3AsO) and [SnF4(L-L)] (L-L = Ph2P(O)CH2P(O)Ph-2, o-C6H4(P(O)Me-2)(2), o-C6H4(P(O)Ph-2)(2)) have been prepared from [SnF4(MeCN)(2)] and the appropriate ligand in dichloromethane solution. The complexes have been characterised by analysis, IR, H-1, P-31{H-1}, F-19{H-1} and Sn-119 NMR spectroscopy as appropriate; the NMR studies showing that the complexes of the monodentate ligands exist as mixtures of trans and cis isomers in solution. The crystal structures of trans-[SnF4(OPMe3)(2)], [SnF4{o-C6H4(P(O)Ph-2)(2)}] center dot CH2Cl2 center dot H2O and [o-C6H4(P(O)Ph-2)(2)] center dot CH2Cl2 have been determined. Comparison of the structural and NMR spectroscopic data of the tetrafluorotin complexes with those of related [SnX4L2] (X = Cl, Br or 1) shows that SnF4 is the strongest Lewis acid in the series towards hard Lewis bases.
tin(iv) fluoride, phosphine oxide, arsine oxide
nuclear-magnetic-resonance, cis-trans isomerism, neutral lewis-bases, crystal-structures, multinuclear nmr, trimethylphosphine oxide, infrared spectra, halide-complexes, adducts, tetrahalides
930-936
Davis, Martin F.
72f26f03-4bbe-482e-b8a5-6c792b22fcc3
Levason, William
e7f6d7c7-643c-49f5-8b57-0ebbe1bb52cd
Reid, Gillian
37d35b11-40ce-48c5-a68e-f6ce04cd4037
Webster, Michael
f26c6e36-cb2e-486e-b2ed-b0d25a3a71f7
2006
Davis, Martin F.
72f26f03-4bbe-482e-b8a5-6c792b22fcc3
Levason, William
e7f6d7c7-643c-49f5-8b57-0ebbe1bb52cd
Reid, Gillian
37d35b11-40ce-48c5-a68e-f6ce04cd4037
Webster, Michael
f26c6e36-cb2e-486e-b2ed-b0d25a3a71f7
Davis, Martin F., Levason, William, Reid, Gillian and Webster, Michael
(2006)
Synthesis and characterisation of tin(IV) fluoride complexes of phosphine and arsine oxide ligands.
Polyhedron, 25 (4), .
(doi:10.1016/j.poly.2005.10.024).
Abstract
The pseudooctahedral complexes [SnF4L2] (L = Ph3PO, Ph3AsO, Me3PO, Me3AsO) and [SnF4(L-L)] (L-L = Ph2P(O)CH2P(O)Ph-2, o-C6H4(P(O)Me-2)(2), o-C6H4(P(O)Ph-2)(2)) have been prepared from [SnF4(MeCN)(2)] and the appropriate ligand in dichloromethane solution. The complexes have been characterised by analysis, IR, H-1, P-31{H-1}, F-19{H-1} and Sn-119 NMR spectroscopy as appropriate; the NMR studies showing that the complexes of the monodentate ligands exist as mixtures of trans and cis isomers in solution. The crystal structures of trans-[SnF4(OPMe3)(2)], [SnF4{o-C6H4(P(O)Ph-2)(2)}] center dot CH2Cl2 center dot H2O and [o-C6H4(P(O)Ph-2)(2)] center dot CH2Cl2 have been determined. Comparison of the structural and NMR spectroscopic data of the tetrafluorotin complexes with those of related [SnX4L2] (X = Cl, Br or 1) shows that SnF4 is the strongest Lewis acid in the series towards hard Lewis bases.
This record has no associated files available for download.
More information
Published date: 2006
Keywords:
tin(iv) fluoride, phosphine oxide, arsine oxide
nuclear-magnetic-resonance, cis-trans isomerism, neutral lewis-bases, crystal-structures, multinuclear nmr, trimethylphosphine oxide, infrared spectra, halide-complexes, adducts, tetrahalides
Identifiers
Local EPrints ID: 44419
URI: http://eprints.soton.ac.uk/id/eprint/44419
ISSN: 0277-5387
PURE UUID: 9baaf032-a0ed-4b1a-83dc-9b10955dd024
Catalogue record
Date deposited: 01 Mar 2007
Last modified: 16 Mar 2024 02:43
Export record
Altmetrics
Contributors
Author:
Martin F. Davis
Author:
Michael Webster
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics
