Hydrothermal synthesis, crystal structure and characterization of a new hexanuclear cobalt(II) complex comprised of octahedral and tetrahedral cobalt ions

Hitoshi Kumagai; Yoshimi Oka; Satoshi Kawata; Masaaki Ohba; Katsuya Inoue; Mohamedally Kurmoo; Hisashi Okawa

doi:10.1016/S0277-5387(03)00139-6

Hydrothermal synthesis, crystal structure and characterization of a new hexanuclear cobalt(II) complex comprised of octahedral and tetrahedral cobalt ions

Hitoshi Kumagai, Yoshimi Oka, Satoshi Kawata, Masaaki Ohba, Katsuya Inoue, Mohamedally Kurmoo, Hisashi Okawa

Inorganic and Analytical Chemistry

Research output: Contribution to journal › Article › peer-review

36 Citations (Scopus)

Abstract

Reaction of Co(II) with phenylcinnamic acid and sodium hydroxide under hydrothermal conditions yields a new hexanuclear Co(II) complex, [Co₆(OH)₂(L)₁₀] (L = phenylcinnamate). [Co₆(OH)₂(L)₁₀] consists of two edge-sharing octahedral {CoO₆} and four tetrahedral {CoO₄} units linked through μ-carboxylate ligands and μ-hydroxide ions. The magnetic moment shows a large decrease from 300 to 25 K which amounts to antiferromagnetic coupling between cobalt ions in octahedral and tetrahedral sites leading to an s = 3 ground-state at low temperatures.

Original language	English
Pages (from-to)	1917-1920
Number of pages	4
Journal	Polyhedron
Volume	22
Issue number	14-17
DOIs	https://doi.org/10.1016/S0277-5387(03)00139-6
Publication status	Published - Jul 15 2003

All Science Journal Classification (ASJC) codes

Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

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Hydrothermal synthesis, crystal structure and characterization of a new hexanuclear cobalt(II) complex comprised of octahedral and tetrahedral cobalt ions. / Kumagai, Hitoshi; Oka, Yoshimi; Kawata, Satoshi; Ohba, Masaaki; Inoue, Katsuya; Kurmoo, Mohamedally; Okawa, Hisashi.

In: Polyhedron, Vol. 22, No. 14-17, 15.07.2003, p. 1917-1920.

Research output: Contribution to journal › Article › peer-review

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abstract = "Reaction of Co(II) with phenylcinnamic acid and sodium hydroxide under hydrothermal conditions yields a new hexanuclear Co(II) complex, [Co6(OH)2(L)10] (L = phenylcinnamate). [Co6(OH)2(L)10] consists of two edge-sharing octahedral {CoO6} and four tetrahedral {CoO4} units linked through μ-carboxylate ligands and μ-hydroxide ions. The magnetic moment shows a large decrease from 300 to 25 K which amounts to antiferromagnetic coupling between cobalt ions in octahedral and tetrahedral sites leading to an s = 3 ground-state at low temperatures.",

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AU - Kumagai, Hitoshi

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AU - Ohba, Masaaki

AU - Inoue, Katsuya

AU - Kurmoo, Mohamedally

AU - Okawa, Hisashi

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AB - Reaction of Co(II) with phenylcinnamic acid and sodium hydroxide under hydrothermal conditions yields a new hexanuclear Co(II) complex, [Co6(OH)2(L)10] (L = phenylcinnamate). [Co6(OH)2(L)10] consists of two edge-sharing octahedral {CoO6} and four tetrahedral {CoO4} units linked through μ-carboxylate ligands and μ-hydroxide ions. The magnetic moment shows a large decrease from 300 to 25 K which amounts to antiferromagnetic coupling between cobalt ions in octahedral and tetrahedral sites leading to an s = 3 ground-state at low temperatures.

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