Synthesis and structure of M0.5Bi3P2O10 (M = Ca, Sr, Ba, Pb) series.
A series of M(0.5)Bi(3)P(2)O(10) compounds with M = Ca, Sr, Ba and Pb have been synthesized in MO-Bi(2)O(3)-P(2)O(5) ternary systems by the ceramic method and the crystal structures were then solved using single-crystal X-ray diffraction data. These compounds are isostructural with Bi(6.67)P(4)O(20) (triclinic, space group P1;, Z = 2). The structures consist of infinite chains of Bi(2)O(2) units along the c axis formed by linking BiO(8) and BiO(6) polyhedra. These chains are interconnected by MO(8) polyhedra forming two-dimensional layers in the ac plane. The phosphate tetrahedra are sandwiched between these layers.
Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, India.
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