255367-21-6Relevant academic research and scientific papers
Novel synthesis of macrocyclic amine-thiophenolate ligands: X-ray crystal structure of a Ni4 complex of an N8S4 ligand
Kersting, Berthold,Steinfeld, Gunther,Fritz, Thorsten,Hausmann, Julia
, p. 2167 - 2172 (1999)
A novel route to macrocyclic amine-thiophenolate ligands is described. The new, air-stable thiophenolate precursor 1,2-bis(4-tert-butyl-2,6- diformyl-phenylsulfanyl) ethane (4) is readily condensed with two equivalents of 1,2-ethanediamine or 1,3-propaned
Synthesis and coordination chemistry of novel binucleating macrocyclic ligands with amine-thioether and amine-thiophenolate donor functions
Klingele, Marco H.,Steinfeld, Gunther,Kersting, Berthold
, p. 901 - 907 (2007/10/03)
The ability of the aromatic tetraaldehyde 1,2-bis(4-tert-butyl-2,6-diformylphenylsulfanyl)-ethane (1) to function as a precursor in the preparation of binucleating hexaamine-dithiolate ligands has been investigated. Reductive amination of compound 1 with bis(aminoethyl)amine under medium-dilution conditions affords the macrobicyclic hexaamine-dithioether compound L1. Deprotection of the [1+2] condensation product gives the corresponding 24-membered hexaamine-dithiophenol ligand H2L2. The formulation of L1 as a macrobicyclic amine-thioether was confirmed by an X-ray crystal structure determination of the tetranuclear nickel(II) complex of L1, [{(L1)Ni2Cl2}2(μ-Cl) 3](BPh4) (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)CoIII(μ-OH)](ClO4)2 · Cl (3). The preparation and the crystal structures of the new compounds are described.
