Syntheses, structural and characterizations of a new anhydrous mixed-metal phosphate

A new mixed-metal phosphate of BaBi2CoP2O10 was synthesized by high temperature solution growth (HTSG) method and structurally characterized by X-ray single crystal diffraction and powder diffraction for the first time. The title compound crystallizes in the monoclinic system with space group P2(1)/c and represents the first compound in the Ba-Bi-M-P-O (M = transition metal) quinary anhydrous system, which structure features a novel 2D open framework which can be considered as building from the layers of [Bi2CoP2O10](infinity)(2) parallel to the bc plane interconnected by corner or bridge sharing of BiO5, BiO7, CoO6, and PO4 groups, where Ba2+ cations are located in the space between two adjacent layers. It is worth to note that the Bi3+ cations containing two kinds of coordinations (5 and 7) show stereochemically activities of their 6s(2) lone pairs. The results of magnetic property measurements evidence on the antiferromagnetic property of BaBi2CoP2O10. (C) 2016 Elsevier B. V. All rights reserved.