A new rubidium beryllium borate, RbBe4(BO3)3.
Single crystals of a new rubidium beryllium borate, RbBe4(BO3)3, have been obtained by spontaneous nucleation from a high-temperature melt. This new orthorhombic (Pnma) structure type contains [Be2BO4]- rings, made of two BeO4 tetrahedra and one BO3 triangle, which constitute the basic structural units. The m plane runs through the B and one of the O atoms and intersects the ring. These rings form chains in the a direction, which are connected in the b and c directions to form zeolite-type cages in which the Rb+ cations are located, at sites of m symmetry.
Wen
Xiao-Hong
XH
Beijing Centre for Crystal Research and Development, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100080, People's Republic of China.
Li
R-K
RK
Chen
C-T
CT