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'Macrocyclic Ligands' in keywords Facet   section ZfN Section B  [X]
Facet   Publication Year 2001  [X]
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2001[X]
1Author    MarcoH. Klingele, Gunther Steinfeld, Berthold KerstingRequires cookie*
 Title    Synthesis and Coordination Chemistry of Novel Binucleating Macrocyclic Ligands with Amine-thioether and Amine-thiophenolate Donor Functions  
 Abstract    The ability of the aromatic tetraaldehyde l,2-bis(4-rm-butyl-2,6-diformylphenylsulfanyl)-ethane (1) to function as a precursor in the preparation of binucleating hexaamine-dithiolate lig­ ands has been investigated. Reductive amination of compound 1 with bis(aminoethyl)amine un­ der medium-dilution conditions affords the macrobicyclic hexaamine-dithioether compound L 1. Deprotection of the [1+2] condensation product gives the corresponding 24-membered hexa-amine-dithiophenol ligand H2L2. The formulation of L 1 as a macrobicyclic amine-thioether was confirmed by an X-ray crystal structure determination of the tetranuclear nickel(II) complex of L 1, [{ (L jN iiC lili^ -C l^K B P h ;) (2b). The formulation of the doubly deprotonated form (L2)2-of H2L2 as a 24-membered amine-thiophenolate ligand was confirmed by an X-ray crystal structure determination of the dinuclear cobalt(III) complex, [(L2)Com(^-OH)](C1 0 4) 2 • Cl (3). The preparation and the crystal structures of the new compounds are described. 
  Reference    Z. Naturforsch. 56b, 901—907 (2001); received June 5 2001 
  Published    2001 
  Keywords    Macrocyclic Ligands, Nitrogen, Sulfur 
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 TEI-XML for    default:Reihe_B/56/ZNB-2001-56b-0901.pdf 
 Identifier    ZNB-2001-56b-0901 
 Volume    56