Structural Diversity of Hydrogen-Bonded Networks of [Co(NH3)6]3+ Complex Cations and Acetylenedicarboxylic Acid Anions
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Rüdiger W. Seidel
,
Richard Goddard
2011
The crystal structure of [Co(NH3)6](ADC)(HADC) · 2H2O (1) (ADC2- =acetylenedicarboxylate) (P21=n, Z = 4) was mistakenly described as containing the [Co(H2O)6]3+ ion [I. Stein, U. Ruschewitz, Z. Naturforsch. , 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 2disappear, while blockshaped 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 · 3H2O (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
Graphical Abstract
![Structural Diversity of Hydrogen-Bonded Networks of [Co(NH3)6]3+ Complex Cations and Acetylenedicarboxylic Acid Anions](/document/doi/10.5560/znb.2014-3272/asset/graphic/s69b0277.png)
Structural Diversity of Hydrogen-Bonded Networks of [Co(NH3)6]3+ Complex Cations and Acetylenedicarboxylic Acid Anions
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- Structural Diversity of Hydrogen-Bonded Networks of [Co(NH3)6]3+ Complex Cations and Acetylenedicarboxylic Acid Anions
- Different Structural Models of YB2C2 and GdB2C2 on the Basis of Single-Crystal X-Ray Data
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- Assembly of Zn(II) Coordination Polymers Based on Tetrachloroterephthalate and Dipyridyl-type Ligands
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- A Dimeric Copper(II) Complex of Oxalate and Oxamide Dioxime Ligands: Synthesis, Crystal Structure, Thermal Stability, and Magnetic Properties
- Dicationic Methyl Complexes of the Rare-Earth Elements
- Orthoamide und Iminiumsalze, LXXXIII [1]. Die Synthese von starken Formylierungsmitteln im präparativen Großmaßstab: Triformamid (Triformylamin) / Orthoamides and Iminium Salts LXXXIII [1]. The Synthesis of Strong Formylating Reagents on Large Preparative Scale: Triformamide (Triformylamine)
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