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Crystal structure of [Co(NH3)6][Co(CO)4]2.

Müller TG, Kraus F - Acta Crystallogr E Crystallogr Commun (2015)

Bottom Line: The resulting polyhedron, the hexa-amminecobalt(II) cation, exhibits point group symmetry -3.The crystal structure is related to that of high-pressure BaC2 (space group R-3m), with the [Co(NH3)6](2+) cations replacing the Ba sites and the [Co(CO)4](-) anions replacing the C sites.N-H⋯O hydrogen bonds between cations and anions stabilize the structural set-up in the title compound.

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Affiliation: Anorganische Chemie, Fluorchemie, Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35032 Marburg, Germany.

ABSTRACT
Hexaamminecobalt(II) bis-[tetra-carbonyl-cobaltate(-I)], [Co(NH3)6][Co(CO)4]2, was synthesized by reaction of liquid ammonia with Co2(CO)8. The Co(II) atom is coordinated by six ammine ligands. The resulting polyhedron, the hexa-amminecobalt(II) cation, exhibits point group symmetry -3. The Co(-I) atom is coordinated by four carbonyl ligands, leading to a tetra-carbonyl-cobaltate(-I) anion in the shape of a slightly distorted tetra-hedron, with point group symmetry 3. The crystal structure is related to that of high-pressure BaC2 (space group R-3m), with the [Co(NH3)6](2+) cations replacing the Ba sites and the [Co(CO)4](-) anions replacing the C sites. N-H⋯O hydrogen bonds between cations and anions stabilize the structural set-up in the title compound.

No MeSH data available.


The mol­ecular structures of the tetra­carbonyl­cobaltate(−I) anion and of the hexa­amminecobalt(II) cation of the title compound. Displacement ellipsoids are shown at the 70% probability level. Labelling of symmetry-equivalent atoms has been omitted for clarity.
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fig1: The mol­ecular structures of the tetra­carbonyl­cobaltate(−I) anion and of the hexa­amminecobalt(II) cation of the title compound. Displacement ellipsoids are shown at the 70% probability level. Labelling of symmetry-equivalent atoms has been omitted for clarity.

Mentions: The mol­ecular components of the title compound are shown in Fig. 1 ▸. The unit cell of [Co(NH3)6][Co(CO)4]2 projected along [001] is shown in Fig. 2 ▸.


Crystal structure of [Co(NH3)6][Co(CO)4]2.

Müller TG, Kraus F - Acta Crystallogr E Crystallogr Commun (2015)

The mol­ecular structures of the tetra­carbonyl­cobaltate(−I) anion and of the hexa­amminecobalt(II) cation of the title compound. Displacement ellipsoids are shown at the 70% probability level. Labelling of symmetry-equivalent atoms has been omitted for clarity.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4645071&req=5

fig1: The mol­ecular structures of the tetra­carbonyl­cobaltate(−I) anion and of the hexa­amminecobalt(II) cation of the title compound. Displacement ellipsoids are shown at the 70% probability level. Labelling of symmetry-equivalent atoms has been omitted for clarity.
Mentions: The mol­ecular components of the title compound are shown in Fig. 1 ▸. The unit cell of [Co(NH3)6][Co(CO)4]2 projected along [001] is shown in Fig. 2 ▸.

Bottom Line: The resulting polyhedron, the hexa-amminecobalt(II) cation, exhibits point group symmetry -3.The crystal structure is related to that of high-pressure BaC2 (space group R-3m), with the [Co(NH3)6](2+) cations replacing the Ba sites and the [Co(CO)4](-) anions replacing the C sites.N-H⋯O hydrogen bonds between cations and anions stabilize the structural set-up in the title compound.

View Article: PubMed Central - HTML - PubMed

Affiliation: Anorganische Chemie, Fluorchemie, Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35032 Marburg, Germany.

ABSTRACT
Hexaamminecobalt(II) bis-[tetra-carbonyl-cobaltate(-I)], [Co(NH3)6][Co(CO)4]2, was synthesized by reaction of liquid ammonia with Co2(CO)8. The Co(II) atom is coordinated by six ammine ligands. The resulting polyhedron, the hexa-amminecobalt(II) cation, exhibits point group symmetry -3. The Co(-I) atom is coordinated by four carbonyl ligands, leading to a tetra-carbonyl-cobaltate(-I) anion in the shape of a slightly distorted tetra-hedron, with point group symmetry 3. The crystal structure is related to that of high-pressure BaC2 (space group R-3m), with the [Co(NH3)6](2+) cations replacing the Ba sites and the [Co(CO)4](-) anions replacing the C sites. N-H⋯O hydrogen bonds between cations and anions stabilize the structural set-up in the title compound.

No MeSH data available.