ChemInform Abstract: New Condensed Cluster Structure with Triple Metal Layers: La2INi2 and La2ICu2. Synthesis, Structure, and Bonding.

✍ Scribed by S.-T. HONG; J. D. MARTIN; J. D. CORBETT

• Publisher: John Wiley and Sons
• Year: 2010
• Weight: 32 KB
• Volume: 29
• Category: Article
• ISSN: 0931-7597
• DOI: 10.1002/chin.199838004

✦ Synopsis

2 . Synthesis, Structure, and Bonding.

-The title compounds are synthesized from appropriate amounts of the elements and LaI 3 in sealed Nb or Ta containers at 800 • C. The new phases adopt a new structural type with an unusual metal-rich layered structure. La 2 INi 2 crystallizes in the hexagonal space group P6m2 with Z = 1 (single crystal XRD). The triple metal layers contain Ni in all trigonal prismatic cavities between pairs of eclipsed (but internally close-packed) La layers. The main difference between La 2 INi 2 and Gd 2 IFe 2 comes from the iodine positions which project along the c-axis onto only one Z position and onto alternate Z positions, respectively.