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  Structural Diversity of Hydrogen-Bonded Networks of [Co(NH3)6]3+ Complex Cations and Acetylenedicarboxylic Acid Anions

Seidel, R. W., Goddard, R., Gramm, V., & Ruschewitz, U. (2014). Structural Diversity of Hydrogen-Bonded Networks of [Co(NH3)6]3+ Complex Cations and Acetylenedicarboxylic Acid Anions. Zeitschrift für Naturforschung B, 69b(3), 277-288. doi:10.5560/ZNB.2014-3272.

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 Creators:
Seidel, Rüdiger W.1, Author              
Goddard, Richard1, Author              
Gramm, Verena2, Author
Ruschewitz, Uwe2, Author
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1Service Department Lehmann (EMR), Max-Planck-Institut für Kohlenforschung, Max Planck Society, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany, ou_1445625              
2Department für Chemie der Universität zu Köln, Greinstraße 6, 50939 Köln, Germany, ou_persistent22              

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Free keywords: Acetylenedicarboxylic Acid, Cobalt, Coordination Compound, Crystal Structure, Hydrogen Bonding
 Abstract: The crystal structure of [Co(NH3)6](ADC)(HADC) · 2 H2O (1) (ADC2− = acetylenedicarboxylate) (P21/n, Z = 4) was mistakenly described as containing the [Co(H2O)6]3+ ion [I. Stein, U. Ruschewitz, Z. Naturforsch. 2011, 66b, 471–478]. A revision is reported. While attempting to reproduce 1, we isolated phase-pure crystalline material of [Co(NH3)6]Cl2(HADC) · H2O (2), the crystal structure of which was also reported in the article above. Upon standing in the aqueous mother liquor at room temperature for several days, the needle-shaped crystals of 2 disappear, while block-shaped crystals of the formerly unknown compound [Co(NH3)6](ADC)(HADC) (3) grow. Satellite peaks in the X-ray diffraction frames indicate that the crystal structure is incommensurately modulated. Dissolving crystals of 3 in water at elevated temperature leads to plate-shaped crystals of the new compound [Co(NH3)6]2(ADC)3 · 3 H2O (4) upon slow cooling to room temperature. Compounds 2–4 were investigated by elemental analysis, powder X-ray diffraction and infrared spectroscopy. Structural characterization of 4 by single-crystal X-ray analysis was also achieved (P1̅, Z = 2). Complex 1, however, could not be reproduced.

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 Dates: 2014-03-17
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.5560/ZNB.2014-3272
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Title: Zeitschrift für Naturforschung B
Source Genre: Journal
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Publ. Info: Tübingen : Verlag der Zeitschrift für Naturforschung
Pages: - Volume / Issue: 69b (3) Sequence Number: - Start / End Page: 277 - 288 Identifier: ISSN: 0939-5075
CoNE: https://pure.mpg.de/cone/journals/resource/954927655916