Synthesis, Crystal Structure, and Properties of Mn(PO₃F)(H₂O)₂

Autor(en)

Matthias Weil, Enrique J. Baran, Reinhard Karl Kremer, Eugen Libowitzky

Abstrakt

Single crystals of manganese(II) fluorophosphate dihydrate, Mn(PO3F)(H2O)2, were grown in a metathesis reaction from aq. solns. of MnCl2 and (NH4)2(PO3F). The crystal structure [P$\bar{1}$, Z = 2, a = 5.5280(7), b = 5.6357(7), c = 8.2570(10) Å, a = 81.279(2), ß = 75.156(2), = 71.722(2)°, 1345 structure factors, 86 parameter, R[F2 > 2s(F2)] = 0.0322, wR(F2 all) = 0.0771] consists of [MnO4(H2O)2] octahedra that share a common edge to form isolated double octahedra of the type [Mn2O2/2O4/1(H2O)4/1]. Each double octahedron is bridged by the oxygen atoms of six (PO3F) tetrahedra to six neighboring double octahedra into a layered arrangement parallel to (001). Adjacent layers are held together through weak O-H···O hydrogen bonds, and no significant hydrogen bonding interactions of the type O-H···F are obsd. Vibrational spectra are discussed in terms of a site-symmetry approxn. for the (PO3F)2- anion. The thermal decompn. of Mn(PO3F)(H2O)2 starts above 130 °C. In a multi-stage mechanism the end-product Mn2P2O7 is formed at temps. above 500 °C. Magnetic measurements suggest an antiferromagnetic ordering of Mn(PO3F)(H2O)2 at 3.4 K.

Organisation(en)

Institut für Mineralogie und Kristallographie

Externe Organisation(en)

Technische Universität Wien, Universidad Nacional de La Plata, Max-Planck-Institut für Festkörperforschung

Journal

Zeitschrift für Anorganische und Allgemeine Chemie

Band

641

Seiten

184-191

Anzahl der Seiten

8

ISSN

0044-2313

DOI

https://doi.org/10.1002/zaac.201400587

Publikationsdatum

01-2015

Peer-reviewed

Ja

ÖFOS 2012

104011 Materialchemie, 105113 Kristallographie

Schlagwörter

ASJC Scopus Sachgebiete

Inorganic Chemistry

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/5538a8cb-3d17-443a-abe4-5f8836c8ce76