Synthesis and Structural Study of Tris(-pyrazolyl)hexakis(pyrazole)dicobalt(III) Nitrate | Zendy

Yifan Shi | Zendy; Atta M. Arif | Zendy; Richard D. Ernst | Zendy

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Synthesis and Structural Study of Tris(-pyrazolyl)hexakis(pyrazole)dicobalt(III) Nitrate

Author(s) -

Yifan Shi,

Atta M. Arif,

Richard D. Ernst

Publication year - 2013

Publication title -

journal of crystallography

Language(s) - English

Resource type - Journals

eISSN - 2356-7317

pISSN - 2314-5994

DOI - 10.1155/2013/851679

Subject(s) - monoclinic crystal system , pyrazole , triethylamine , octahedron , chemistry , cobalt , metal , nitrate , tris , salt (chemistry) , medicinal chemistry , stereochemistry , inorganic chemistry , crystallography , crystal structure , organic chemistry , biochemistry

The new (Hpyz)3Co(μ2-pyz)3Co complex has been isolated as the nitrate salt through a reaction of Co(II) nitrate, Hpyz (pyrazole), triethylamine, and oxygen. The salt crystallizes in the monoclinic space group P21/m with a = 12.5977(3) Å, b = 15.3387(4) Å, c = 14.0800(3) Å, β = 93.0868(15)°, and = 1.464 g/cm3 at 150(1) K. The complex, with pseudo-octahedral coordination about the equivalent cobalt centers, has shorter Co–N distances for the bridging anionic pyz ligands as compared to the neutral Hpyz ligands, with the averages being 1.918(2) and 1.966(4), respectively. The Co–Co separation is 3.568 Å, reflecting the absence of any significant metal-metal interaction

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