| | 1 | Author
| MarcoH. Klingele, Gunther Steinfeld, Berthold Kersting | Requires 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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| default:Reihe_B/56/ZNB-2001-56b-0901.pdf | | | | Identifier
| ZNB-2001-56b-0901 | | | | Volume
| 56 | |
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