Synthesis and inclusion behavior of cyclotriphosphazene molecules with asymmetric spiro rings
Two novel cyclic phosphazenes with asymmetric spiro rings were synthesized via reactions of hexachlorocyclotriphosphazene with chiral amino alcohol residues. The reactions showed preferential formation of the cis isomer possibly due to the delocalization of the lone pair electrons of the spirocylic...
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| Veröffentlicht in: | Dalton transactions : an international journal of inorganic chemistry 2010-01, Vol.39 (22), p.5341-5348 |
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| container_issue | 22 |
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| container_title | Dalton transactions : an international journal of inorganic chemistry |
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| creator | Lee, David K Y Jackson, Anne-Martine S Fushimi, Toshiki Yennawar, Hemant Allcock, Harry R |
| description | Two novel cyclic phosphazenes with asymmetric spiro rings were synthesized via reactions of hexachlorocyclotriphosphazene with chiral amino alcohol residues. The reactions showed preferential formation of the cis isomer possibly due to the delocalization of the lone pair electrons of the spirocylic nitrogen, which reduces its ability to solvate protons. Crystals of these phosphazenes were analyzed by X-ray crystallography which confirmed the formation of cis isomers and showed their ability to include guest molecules within the crystal lattices. The selective inclusion of epoxides by one of the phosphazenes was an effective method for the separation of thermally sensitive guest molecules. |
| doi_str_mv | 10.1039/b925734a |
| format | Article |
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| ispartof | Dalton transactions : an international journal of inorganic chemistry, 2010-01, Vol.39 (22), p.5341-5348 |
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| source | MEDLINE; Royal Society Of Chemistry Journals 2008-; Alma/SFX Local Collection |
| subjects | Crystallography, X-Ray Heterocyclic Compounds, 1-Ring - chemical synthesis Heterocyclic Compounds, 1-Ring - chemistry Isomerism Molecular Conformation Organophosphorus Compounds - chemical synthesis Organophosphorus Compounds - chemistry Phosphoranes - chemistry Spiro Compounds - chemical synthesis Spiro Compounds - chemistry |
| title | Synthesis and inclusion behavior of cyclotriphosphazene molecules with asymmetric spiro rings |
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