Preparation and characterization of cobalt(III) complexes containing 1,1,1-tris(dimethylphosphinomethyl)ethane (mmtp), and the crystal structure of [Co(mmtp)2][Co(CN)6] · 2.25H2O

Tadashi Ando, Masakazu Kita, Kazuo Kashiwabara, Junnosuke Fujita, Saeko Kurachi, Shigeru Ohba

研究成果: Article

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Eight new cobalt(III) complexes of the type, [CoX3(mmtp)]n+ (mmtp= 1,1,1-tris(dimethylphosphino-methyl)ethane, X3=(Cl)3, (Br)3, (CN)3, (NH3)3 mmtp, 3-azapentane-1,5-diamine (dien), 1,4,7-triazacyclononane (tacn), and 1,4,7-trithiacyclononane (ttcn)), were prepared and characterized. All of the complexes are stable in the solid state, but the halogeno complexes aquate rapidly in water, and the ammonia complex liberates NH3 slowly in 1 mol dm-3 HCl to give [CoCl2(NH3)(mmtp)]+, other complexes including [Co(mmtp)2]3+ being stable in solution. The crystal structure of [Co(mmtp)2][Co(CN)e] · 2.25H2O was determined by X-ray analysis. Crystal data: orthorhombic, space group Pca21, a=31.579(5), b=10.521(1), c=23.458(3) Å, V=7794(2) Å3, Z=8, R=0.084 for 4196 reflections. The Co-P bond distances are 2.291(9)-2.357(7) Å (av 2.331 Å), which are appreciably longer than those usually found in Co(III)-phosphine complexes. The absorption spectra of the complexes were compared with one another and with those of the related complexes.

元の言語English
ページ(範囲)2748-2755
ページ数8
ジャーナルBulletin of the Chemical Society of Japan
65
発行部数10
DOI
出版物ステータスPublished - 1992 10 1

ASJC Scopus subject areas

  • Chemistry(all)

フィンガープリント Preparation and characterization of cobalt(III) complexes containing 1,1,1-tris(dimethylphosphinomethyl)ethane (mmtp), and the crystal structure of [Co(mmtp)<sub>2</sub>][Co(CN)<sub>6</sub>] · 2.25H<sub>2</sub>O' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

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