Macrobicyclic triphosphazides and tri-λ-phosphazenes derived from PhC(CH2PPh2)3. Two propeller-shaped diastereoisomers in the crystals |
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| Authors: | Mateo Alajarín Carmen López-Leonardo |
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| Institution: | a Departamento de Química Orgánica, Facultad de Química, Universidad de Murcia, Campus de Espinardo, E-30100 Murcia, Spain
b Department of Chemistry, University of Durham, South Road, Durham DH1 3LE, UK |
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| Abstract: | New macrobicyclic cage-compounds composed of two tripodal, propeller-shaped fragments linked by phosphazide and phosphazene units have been synthesized by reaction of PhC(CH2PPh2)3 with tris(m-azidobenzyl)amines. Two diastereoisomers of one of these cages have been characterized in the solid state by X-ray crystallography, one presenting two propellers with the same sense of twist P∗,P∗ whereas in the second one the helical sense of both propellers is the opposite, P∗,M∗. In contrast, only one species is apparent in CDCl3 solution. |
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| Keywords: | Triphosphazide Tri-λ5-phosphazene Macrobicycle Cage-compound Propeller Tripod-tripod coupling |
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