MnBa(2)(HPO(4))(2)(H(2)PO(4))(2).
Crystals of manganese(II) dibarium bis-(hydrogenphosphate) bis-(dihydrogenphosphate), MnBa(2)(HPO(4))(2)(H(2)PO(4))(2), were obtained by hydro-thermal synthesis. The title compound is isotypic with its Cd(II) and Ca(II) analogues. The structure is built up of an infinite {[Mn(HPO(4))(2)(H(2)PO(4))(2)](4-)}(n) chain running along [100], which consists of alternate MnO(6) octa-hedra and [PO(4)] tetra-hedra, in which the centrosymmetric MnO(6) octa-hedra share their four equatorial O-atom corners with tetra-hedral [PO(3)(OH)] groups and their two axial apices with tetra-hedral [PO(2)(OH)(2)] groups. These chains are held together by BaO(9) coordination polyhedra, developing into a three-dimensional structure. The O-H⋯O hydrogen bonds additionally stabilize the structural set-up. Due to the ionic radius of Mn(2+) being much smaller than those of Ca(2+) and Cd(2+), this may imply that their adopted structure type has a great tolerance for incorporating various ions and the exploitation of more diverse compounds in the future is encouraged.
Fujian Provincial Key Laboratory of Advanced Materials, Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen 361005, Fujian Province,  People's Republic of China.
Wei
W
Sun
Li-Zhi
LZ
Sun
Teng-Teng
TT
Zhu
Biao-Chun
BC
Zhao
Jin-Xiao
JX
Mi