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2005
Structure
D 2000
07- 013
Fluoromanganate(III) Anions with New Tetrameric and Chain Structures in
(pipzH2)3[Mn4F18(H 2O)]и(H 2O) and (pipzH 2)4[Mn2F9]2[MnF4(H2O)2] [MnF4(HF)2].
? (pipzH2)3[Mn4F18 (H2O)]иH2O (pipzH2: piperazinium) (I) is precipitated from a solution of (pipzH2)2[MnF2(HPO4)(H2O)] in 6M HF and (pipzH2)4[Mn2F9]2[MnF4(H2O)2]
[MnF4(HF)2] (II) is precipitated from a solution of MnF3 and piperazine in 10M HF. (I)
crystallizes in the orthorhombic space group Pnma with Z = 4 (single crystal XRD). Its
structure shows a new tetrameric anion [Mn4F18 (H2O)]6- formed by two edge-sharing
double-octahedra linked by a common corner. (II) is triclinic, space group P1, Z = 1. In
this structure analogous double-octahedra are corner-linked to infinite chains. These
chains are further connected to a three-dimensional network via strong hydrogen bonds
FиииHиииF, OиииHиииF, and NиииHиииF. ? (STIEF, R.; MASSA*, W.; Z. Anorg. Allg. Chem.
630 (2004) 13-14, 2502-2507; Fachbereich Chem., Philipps-Univ., D-35043 Marburg,
Germany; Ger., Abstr. Eng.) ? Schramke
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