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Synthese und Struktur des Mangan(II)‐ L ‐aspartat‐trihydrats, Mn( L ‐Asp) · 3H 2 O
Author(s) -
Schmidbaur Hubert,
Bach Ina,
Riede Jürgen,
Müller Gerhard,
Helbig Joachim,
Hopf Günther
Publication year - 1988
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19881210427
Subject(s) - chemistry , manganese , crystal structure , carboxylate , ligand (biochemistry) , stereochemistry , molecule , octahedron , aqueous solution , crystallography , zinc , medicinal chemistry , magnesium , coordination sphere , receptor , organic chemistry , biochemistry
Synthesis and Structure of Manganese(II) L ‐Aspartate Trihydrate, Mn( L ‐Asp)· 3H 2 O Manganese L ‐aspartate chloride, Mn( L ‐AspH)Cl, has been prepared from equimolar quantities of MnCl 2 and Mn( L ‐AspH) 2 in water. This material can be converted into the title compound by treatment with aqueous KOH, and crystallized as a trihydrate from solutions kept at pH = 7.85. The compound has been characterized by elemental analysis and by single crystal X‐ray structure determination. In the crystal, the aspartate dianion functions as a facially tridentate ligand to the Mn(II) center whose octahedral coordination sphere is completed by two water molecules and a carboxylate oxygen atom from a neighboring complex in trans position to the amino group. The stereochemistry of this coordination mode is different from that in the analogous magnesium compound, but similar to that in the cobalt(II) and zinc(II) analogues. The third water molecule is a hydrogen‐bonded crystal water.