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Crystallization and Structure Determination of Fac-Triammin-Aquo-Oxalato-Cobalt (III)-Nitrate Monohydrate

1
Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, 39106 Magdeburg, Germany
2
Institut für Anorganische Chemie der Universität Leipzig, 04103 Leipzig, Germany
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Author to whom correspondence should be addressed.
Crystals 2014, 4(4), 490-497; https://doi.org/10.3390/cryst4040490
Received: 8 October 2014 / Revised: 17 November 2014 / Accepted: 19 November 2014 / Published: 28 November 2014
The title compound, fac-triammin-aquo-oxalato-cobalt(III)-nitrate monohydrate, fac-[Co(NH3)3(C2O4)(H2O)]NO3·H2O (2), was prepared according to an original synthetic protocol published exactly 100 years ago by Alfred Werner by dissolving the indigo-blue non-electrolyte complex mer-triammin-chloro-oxalato-cobalt(III), mer-[Co(NH3)3(C2O4)Cl] (1), in boiling half-concentrated nitric acid. Contrary to the literature, it did not crystallize directly from the reaction mixture, but crystallization could be induced by saturating the solution with NaClO4. The structure of 2 has monoclinic (P21/n) symmetry. The crystal structure displays an extensive array of N–H···O and O–H···O hydrogen bonding. View Full-Text
Keywords: Oxalato complexes; cobalt; Werner-type complexes; hydrogen bonds; crystal structure Oxalato complexes; cobalt; Werner-type complexes; hydrogen bonds; crystal structure
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Hrib, C.G.; Blaurock, S.; Edelmann, F.T. Crystallization and Structure Determination of Fac-Triammin-Aquo-Oxalato-Cobalt (III)-Nitrate Monohydrate. Crystals 2014, 4, 490-497.

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