Neue Rhodiumverbindungen mit LiCo6P4‐Struktur

New Rhodium Compounds with the LiCo₆P₄ Type Structure Five new phosphides and arsenides respectively of the formula ARh₆X₄ (A: Mg–Sr, Yb; X: P, As) were prepared by heating mixtures of the elements and investigated by means of single crystal X‐ray methods. They are isotypic and crystallize in the LiCo₆P₄ type structure (P6m2; Z = 1) (lattice constants see ”︁Inhaltsübersicht”︁”︁). The compounds belong to the large family of phosphides and arsenides, which have a metal : non‐metal ratio of about 2 : 1. Their structures are characterized by the environment of phosphorus and arsenic respectively, which is composed of trigonal prisms of metal atoms with additional metal atoms capping the rectangular faces of the prisms.