title: Bis-macrocyclic Ligands with Two Ferrocenyl End Groups, and Their Tetranuclear Dicopper(I) Compounds.
abstract: A series of bismacrocyclic ligands with two ferrocenyl groups, exo/endo-1,1':1' ',1' "-[1,2,4,5-tetrakis(5-aza-2-thiahexa-5-enyl)benzene]bisferrocene (exo/endo-FeBeFe), 1,1':1' ',1' "-[1,2:1',2'-tetrakis(5-aza-2-thiahexa-5-enyl)ethene]bisferrocene (1,2-FeEnFe), 1,1':1' ',1' "-[1,1':2,2'-tetrakis(5-aza-2-thiahexa-5-enyl)ethene]bisferrocene (1,1-FeEnFe), 1,1':1' ',1' "-[tetrakis(5-aza-2-thiahexa-5-enyl)methane]bisferrocene (FeMeFe), and their dicopper(I) compounds have been synthesized and characterized (electrochemistry, IR, NMR and Mössbauer spectroscopy). The molecular structure of endo-FeBeFe has been determined by X-ray structure analysis and the copper(I)-induced discrimination of the exo- and endo-isomers of FeBeFe has been investigated by (1)H NMR spectroscopy. The interaction between copper and iron in the tetranuclear compounds is discussed on the basis of the electrochemical and spectroscopic data.
authors.affiliation: Anorganisch-Chemisches Institut, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany, and Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg Universität Mainz, Staudinger Weg 9, 55099 Mainz, Germany.
authors.forename: Peter
authors.initials: P
authors.lastname: Comba
authors.forename: Jürgen
authors.initials: J
authors.lastname: Ensling
authors.forename: Philipp
authors.initials: P
authors.lastname: Gütlich
authors.forename: Andreas
authors.initials: A
authors.lastname: Kühner
authors.forename: Alexander
authors.initials: A
authors.lastname: Peters
authors.forename: Hans
authors.initials: H
authors.lastname: Pritzkow