6533b830fe1ef96bd1296756

RESEARCH PRODUCT

White Phosphorus Is Air-Stable Within a Self-Assembled Tetrahedral Capsule

Boris BreinerJonathan R. NitschkePrasenjit MalKari Rissanen

subject

chemistry.chemical_compoundMultidisciplinarychemistryCoordination cageWhite PhosphorusInorganic chemistryTetrahedronMoleculeCrystal structurePhotochemistryBenzeneSelf assembledIon

description

Molecular Fire Quencher Cage-shaped molecular assemblies can regulate the reactivity of smaller molecules trapped within them. Mal et al. (p. 1697 ) extend this approach to enable the protection of elemental white phosphorus (P 4 ), a substance that rapidly ignites on contact with oxygen. The tetrahedral cages self-assemble in aqueous solution through coordination of six ligands to four iron ions, and efficiently capture phosphorus from a suspension. The water-soluble host-guest constructs were stable in air for at least 4 months, but released intact P 4 rapidly on displacement by added benzene.

https://doi.org/10.1126/science.1175313