Sawtooth chains self-assembled from clusters of MnO₆ octahedra within the silicate framework of K₃Mn₄Si₁₀O_24.33(H₂O,OH)₃/V,B

Abstract

Single crystals of a novel phase, potassium manganese silicate hydrate, K3Mn4Si10O24.33(H2O,OH)3, doped with B and V, were obtained at hydrothermal conditions and studied using scanning electron microscopy, microprobe analysis and...

Crystal chemistry and predicted ionic conductivity of hydrothermally synthesized Na9Zn2(PO4)4Cl

“…The reaction product was cooled to room temperature over 24 hours, washed with hot distilled water and dried. Three phases in the form of single crystals: gray-blue plates of Na 4 VO(PO 4 ) 2 , [13][14][15] light green samples of Na 3 VO(PO 4 )(CO 3 ) of irregular shape 16 and transparent uncoloured prisms of a presumably new phase, were isolated in amounts of about 30%, 20% and 50%, respectively. Note that metallic Zn was added to the system as a reducing agent to initiate the formation of VCl 2 , but the solution turned out to be chemically unstable, and then crystallization of vanadyl(IV) compounds Na 4 VO(PO 4 ) 2 and Na 3 VO(PO 4 )(CO 3 ) occurred under oxidizing conditions, while an excess of concentrated hydrochloric acid promoted the formation of sodium zincophosphate chloride.…”

Comprehensive study of the synthetic tychite, Na6Mg2(CO3)4SO4: synthesis, structure and conductive properties

“…These compounds occur naturally in the form of minerals called "Bradleyite" (Na 3 MgPO 4 CO 3 ), 5 "Sidorenkite" (Na 3 MnPO 4 CO 3 ), 6 "Bonshtedtite" (Na 3 FePO 4 CO 3 ) 7 and "Crawfordite" (Na 3 SrPO 4 CO 3 ). 8 Subsequently, a series of Na 3 MPO 4 CO 3 carbonophosphates (M = Mg, Mn, Fe, Co, Ni, Cu, Sr, or V) was experimentally obtained, 4,9 and the conductive and electrochemical properties of some of them were studied. [10][11][12] Carbonophosphates have increased the interest of researchers in the study of mixed polyanionic materials with various combinations of polyanions in the structure.…”

K2Mn3O(OH)(VO4)(V2O7) with Sawtooth Chains of Multivalent Manganese Triangular Trimer Units: Magnetic Susceptibility Shrouding a Long-Range Antiferromagnetic Order of Ferromagnetic Triangles

“…Our ongoing efforts to find promising manganese-based magnetic materials – led to the first Mn 3+ /Mn 2+ ortho -pyrovanadate, K 2 Mn 2 3+ Mn 2+ O­(OH)­(VO 4 )­(V 2 O 7 ). We characterized its crystal structure, morphology, and magnetic properties by various measurements and first-principles calculations.…”