Abstract
Two new manganese phosphate-silicates Na3Mn2Si2PO10, (1), and CsNa8[Mn3+5Mn2+0.8Si12O32.6(OH)5.4](PO4)(H2O)4 (2) were synthesized under mild hydrothermal conditions. The structure of 1 contains Si4O12vierer single rings that interconnect chains of MnO6 octahedra to form slabs. The slabs are cross-linked by PO4 tetrahedra to form a framework with channels filled by sodium ions. Compound 2 consists of silicate single layers that are interconnected by complex chains of MnOn polyhedra to form a 3D framework. The framework has channel systems filled by Na+, Cs+, (PO4)3– ions and water molecules. The silicate single layer of 2 is an unbranched sechser single layer and contains both secondary Q2 and tertiary Q3 tetrahedra with a Q2/Q3 ratio 2 : 1. The valence states of the Mn atoms in 2 are derived from bond valence calculations and are supported by XPS measurement.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
