A new ternary derivative of the Laves phases in the Mg-Co-Ga system.

Crystal structures of MgCoGa, MgCoGa and MgCoGa phases from the Mg-Co-Ga system were investigated using single-crystal diffraction. These structures belong to the family of so-called Laves phases. Hexagonal MgCoGa crystallizes as a disordered phase within the MgZn structure type.

New cubic cluster phases in the Mg-Ni-Ga system.

The crystal structure of new MgNiGa and MgNiGa compounds were investigated by single-crystal diffraction. Both structures can be described as three-core-shell cluster compounds. In the MgNiGa structure, the [NiGa] icosahedron is encapsulated within the [Mg] dodecahedron, which is again encapsulated within a [NiGa] fullerene-like truncated icosahedron, thus the three core-shell cluster [NiGa@Mg@NiGa] results.

A new monoclinic structure type for ternary gallide MgCoGa.

The crystal structure of MgCoGa (magnesium cobalt digallide) was solved by direct methods and refined in two space groups as P2/c (standard choice) and P2/n (non-standard choice). The refined lattice parameters for the standard choice are a = 5.1505 (2), b = 7.

Li4Ge2B as a new derivative of the Mo2B5 and Li5Sn2 structure types.

Binary and multicomponent intermetallic compounds based on lithium and p-elements of Groups III-V of the Periodic Table are useful as modern electrode materials in lithium-ion batteries. However, the interactions between the components in the Li-Ge-B ternary system have not been reported. The structure of tetralithium digermanium boride, Li4Ge2B, exhibits a new structure type, in the noncentrosymmetric space group R3m, in which all the Li, Ge and B atoms occupy sites with 3m symmetry.

Grown from lithium flux, the ErCo5Si(3.17) silicide is a combination of disordered derivatives of the UCo5Si3 and Yb6Co30P19 structure types.

A ternary hexaerbium triacontacobalt enneakaidecasilicide, ErCo5Si(3.17), crystallizes as a combination of disordered variants of the hexagonal UCo5Si3 (P6₃/m) and Yb6Co30P19 (P6) structure types and is closely related to the Sc6Co30Si19 and Ce6Rh30Si19 types. The Er, Co and three of the Si atoms occupy sites of m.

Tm2.22Co6Sn20 and TmLi2Co6Sn20 stannides as disordered derivatives of the Cr23C6 structure type.

A new ternary dithulium hexacobalt icosastannide, Tm2.22Co6Sn20, and a new quaternary thulium dilithium hexacobalt icosastannide, TmLi2Co6Sn20, crystallize as disordered variants of the binary cubic Cr23C6 structure type (cF116). 48 Sn atoms occupy sites of m.

Terbium (lithium zinc) distannide, TbLi(1-x)Zn(x)Sn(2) (x = 0.2).

The new terbium (lithium zinc) distannide, TbLi(1-x)Zn(x)Sn(2) (x = 0.2) crystallizes in the ortho-rhom-bic CeNiSi(2) structure type with space group Cmcm and Pearson symbol oS16. Of the four independent 4c atom positions (m2m site symmetry), three are fully occupied by individual atoms (two by Sn and one by Tb atoms) and the fourth is occupied by Li and Zn atoms with a statistical distribution.

Redetermination of LaZn(5) based on single crystal X-ray diffraction data.

The crystal structure of the already known binary title compound LaZn(5) (lanthanum penta-zinc) (space group P6/mmm, Pearson symbol hP6, CaCu(5) structure type) has been redetermined from single-crystal X-ray diffraction data. In contrast to previous determinations based on X-ray powder data [Nowotny (1942). Z.