Taming Tin(IV) Polyazides |
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| Authors: | Rory Campbell Dr. Martin F. Davis Mathew Fazakerley Dr. Peter Portius |
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| Affiliation: | Department of Chemistry, The University of Sheffield, Brook Hill, S3?7HF (UK) https://www.sheffield.ac.uk/chemistry/staff/profiles/peter_portius |
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| Abstract: | The first charge‐neutral Lewis base adducts of tin(IV) tetraazide, [Sn(N3)4(bpy)], [Sn(N3)4(phen)] and [Sn(N3)4(py)2], and the salt bis{bis(triphenylphosphine)iminium} hexa(azido)stannate [(PPN)2Sn(N3)6] (bpy = 2,2′‐bipyridine; phen = 1,10‐phenanthroline; py = pyridine; PPN = N(PPh3)2) have been prepared using covalent or ionic azide‐transfer reagents and ligand‐exchange reactions. The azides were isolated on the 0.3 to 1 g scale and characterized by IR and NMR spectroscopies, microanalytical and thermal methods and their molecular structures determined by single‐crystal XRD. All complexes have a distorted octahedral Sn[N]6 coordination geometry and possess greater thermal stability than their Si and Ge homologues. The nitrogen content of the adducts of up to 44 % exceed any SnIV compound known hitherto. |
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| Keywords: | azides hypercoordination weakly coordinating cations main group elements polyazides |
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