Mixed complexes with bulky ligands. I. Cobalt(II) complexes containing N,N-bis(2-(dimethylamino)ethyl)methylamine.

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概要

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• Nine new cobalt(II) complexes were prepared which contained <I>N</I>,<I>N</I>-bis[2-(dimethylamino)ethyl]methylamine (dienMe) and some unidentate or bidentate ligands, such as acetonitrile, ammonia, ethylenediamine (en), trimethylenediamine (tn), the acetylacetonate ion (acac), or the oxalate ion. The solid-reflectance spectra revealed that six complexes of the [Co(XX)dienMe](ClO<SUB>4</SUB>)<I><SUB>n</SUB></I> formula (XX=2CH<SUB>3</SUB>CN, 2NH<SUB>3</SUB>, en, tn, acac, or 1/2C<SUB>2</SUB>O<SUB>4</SUB>; <I>n</I>=1 or 2) are five-coordinated, whereas three complexes, [Co(C<SUB>2</SUB>O<SUB>4</SUB>)(H<SUB>2</SUB>O)dienMe] and Co(C<SUB>2</SUB>O<SUB>4</SUB>)<SUB>1⁄2</SUB> (solv)(dienMe)ClO<SUB>4</SUB> (solv=CH<SUB>3</SUB>CN or CH<SUB>3</SUB>OH), are six-coordinated. On the basis of their electronic spectra, most of the five-coordinated complexes were supposed to have a trigonal-bipyramidal structure in the solid state and in solution. The IR spectra of three hemioxalato complexes revealed the presence of quadridentate oxalateion bridging between two cobalt ions, regardless of their coordination number.

• 公益社団法人 日本化学会の論文

著者

• UTSUNO Shunji

  Department of Chemistry, Faculty of Science, Shizuoka University

• Utsuno Shunji

  Department Of Chemistry Faculty Of Science Shizuoka University

関連論文

• Preparation and Stereochemistry of Cobalt(III) Complexes Containing 2, 2'-Bipyridine 1, 1'-Dioxide
• Preparation and Resolution of a Series of Cobalt(III) Complexes Containing 2,2'-Biimidazole and Ethylenediamine
• Isomerization and Racemization of the Tris(4,4'-dimethoxy-or 4,4'-diethoxy-2,2'-bipyridine 1,1'-dioxide)chromium(III)Complexes
• Isomerism of the metal complexes containing multidentate ligands. X. (CoN6)3+-type complexes containing H2N(CH2CH2NH)nH (n=0-4).
• Isomerization and Racemization of the Tris(4,4'-dimethyl-2,2'-bipyridine N,N'-dioxide)chromium(III) Complex.
• 13CNMR Spectra of series of bis(2,2'-bipyridine)cobalt(III) and bis(1,10-phenanthroline)cobalt(III) complexes.
• Mixed complexes with bulky ligands. I. Cobalt(II) complexes containing N,N-bis(2-(dimethylamino)ethyl)methylamine.

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