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2005
Structure
D 2000
20- 003
The Co2Al 9 Structure Type Revisited. — The centrosymmetric structure of Co2Al9
(monoclinic, space group P21/c, Z = 2), the isotypic structures of Rh2Al9 and Ir 2Al 9, and
the slightly distorted acentric structures of Rh2Ga9 and Ir2Ga9 (monoclinic, space group
Pc, Z = 2) are reinvestigated by single crystal X-ray diffraction. The structure of Rh2Ga 9
is found to represent a new structure type. The difference between the aluminides and
the gallides are caused by atomic interactions which are investigated by the electron
localization function and band structure calculations. — (BOSTROEM*, M.;
ROSNER, H.; PROTS, Y.; BURKHARDT, U.; GRIN*, Y.; Z. Anorg. Allg. Chem.
631 (2005) 2-3, 534-541; MPI Chem. Phys. fester Stoffe, D-01187 Dresden, Germany;
Eng.) — Schramke
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