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M. G. Derebe, N. Retta, Anna Grazia Giuseppina Moliterni, Francesco Capitelli

Synthesis and crystal structure of diaquabis(diketohydrindene-diketohydrindamine)manganese(II)

Diaquabis(diketohydrindene-diketohydrindamine)manganese(II), Mn(II) complex of Ruhemann´s purple, a condensation product of ninhydrin and α, L-alanine (or any α-amino acid), was synthesized for the first time and its structure determined by X-ray diffraction methods. The study revealed that the metal ion is seven-coordinated with two Ruhemann´s purple ligands, one behaving as a didentate ON donor and another as a tridentate ONO donor, both monobasic, and two additional water ligands. The structure closely resembles a distorted pentagonal bipyramid (D_5h) geometry.

Zeitschrift für Kristallographie, Oldenbourg Wissenschaftsverlag

Print ISSN: 0044-2968
Volume: 218, 01/2003
Pages: 062

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