Hexahomotrioxacalix[3]arene: a scaffold for a C₃-symmetric phosphine ligand that traps a hydrido-rhodium fragment inside a molecular funnel

Abstract

Stereoselectivity around an H–Rh–CO fragment has been realized by reaction of the hexahomotrioxacalix[3]arene-derived triphosphine 4 with [Rh(acac)(CO)₂]; the resultant trigonal bipyramidal complex has the Rh–H bond directed inside the cavity.

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