title: Monomeric and polymeric copper and zinc tripyrrins.
abstract: Neutral transition metal complexes of different alpha,omega-dimethyltripyrrins TrpyMX with M = Cu(II) and Zn(II) have been prepared with a variety of anionic halogeno and pseudohalogeno ligands X, and have been studied with respect to coordination modes and structural distortion. Only four- and five-coordinate species have been observed throughout the series. All four-coordinate species display unstrained, but distorted tetrahedral or strained and distorted square-planar coordination environments for zinc(II) and copper(II) species, respectively, thus following the expectations from simple ligand field arguments. Five-coordinate species do not form easily and were observed either in donor solvents or in the solid as 1D coordination polymers with distorted trigonal-bipyramidal coordination and different topologies.
authors.affiliation: Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse, 35032 Marburg, Germany. Martin.Broering@chemie.uni-marburg.de
authors.forename: Martin
authors.initials: M
authors.lastname: Bröring
authors.forename: Serguei
authors.initials: S
authors.lastname: Prikhodovski
authors.forename: Carsten D
authors.initials: CD
authors.lastname: Brandt
authors.forename: Esther Cónsul
authors.initials: EC
authors.lastname: Tejero
authors.forename: Silke
authors.initials: S
authors.lastname: Köhler