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A new eight-coordinate complex of manganese(II): synthesis, crystal structure, spectroscopy and magnetic properties of [Mn(Hoxam)2(H2O)4] (H2oxam=oxamic acid)

✍ Scribed by Yolanda Rodrı́guez-Martı́n; Catalina Ruiz-Pérez; Javier González-Platas; Joaquı́n Sanchiz; Francesc Lloret; Miguel Julve

Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
108 KB
Volume
315
Category
Article
ISSN
0020-1693

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✦ Synopsis

The crystal structure of an eight-coordinate manganese(II) compound containing oxamato and water molecules as ligands [Mn(Hoxam) 2 (H 2 O) 4 ], were H 2 oxam=oxamic acid, has been determined by X-ray diffraction on single-crystals. The coordinated oxygen atoms are located at the vertices (corners) of a distorted bicapped trigonal antiprism. Hydrogen bonding is responsible for an extended 3D-network. The magnetic susceptibility data of the compound have been investigated. M T follows the Curie law, at very low temperatures M T decreases smoothly due to weak intermolecular interactions and/or due to a small zero field splitting of the sextuplet spin state of the Mn(II).

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