This article gives an overview of recent developments in three areas of solid state
chemistry:(1) The discovery that centered and originally-adventitious interstitial elements Z …

Comproportionation reactions of rare‐earth metal trihalides, RX3, with the respective R
metal in the presence of a transition metal Z, preferably from group 8 through 10, yielded …

A large number of reduced halides of the first two groups of transition metals are obtained
that are built from edge-bridged octahedral cluster units (M6X12) but only when these …

The early transition metals, especially Zr, Hf, Hb and Ta, exhibit a metal-rich chemistry that is
often surprising in its structural and physical aspects. Unfamiliarity with this chemistry is …

The structures of two new cubic {TnLa3} Br3 (Tn= Ru, Ir; I 4132, Z= 8; Tn= Ru: a= 12.1247
(16) Å, V= 1782.4 (4) Å3; Tn= Ir: a= 12.1738 (19) Å, V= 1804.2 (5) Å3) compounds belonging …

A new direction in reduced rare-earth-metal (R) compounds opened up when tantalum (and
niobium) were adapted to use as virtually faultless containers for these reactions, as these …

Although the Pt–Pr phase diagram has been explored well, recent work on rare-earth metal
cluster halides with endohedral transition metal atoms has provided a new binary …

Reactions in the Gd-I-Mn system near 800 C in sealed Nb containers provide good yields of
Gd3I3Mn and GdsUMn. The first is isostructural with the Pr3I3Ru family (P2]/w, Z= 2, a …

Abstract The subhalides La3X3Z (X= Br, I, Z= Si, P, As, Sb, C2) were synthesized from
stoichiometric mixtures of La, LaX3 and Z under Ar atmosphere in sealed Ta ampoules at …

Suitable reactions in sealed Nb tubing at 850− 950° C gave good yields of a family of
oligomeric cluster phases that were characterized by single-crystal X-ray diffraction means …