Rb4Mg3D10 was synthesized by sintering stoichiometric mixtures of the binary deuterides at 675 K and 100 bar D2 for 5 days and characterized by X-ray and neutron powder diffraction. It crystallizes with the orthorhombic Cs4Mg3F10 structure (space group Cmca (64), cell parameters a = 6.0238(2) Å, b = 14.1126(5) Å, c = 13.4616(5) Å, V=1144.4 Å3, Z=4) and contains two magnesium sites having distorted octahedral deuterium coordination and two rubidium sites having irregular 10-fold and 11-fold deuterium coordination. The metal-deuterium distances and shortest deuterium-deuterium distance (Rb-D: 2.82-3.38, Mg-D: 1.90-2.11, D-D: 2.59 Å) are consistent with those found in the deuterides Rb2MgD4, Rb3MgD5 and RbMgD3.
|Journal||Journal of Alloys and Compounds|
|Publication status||Published - 1999|
All Science Journal Classification (ASJC) codes
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry