title: Copper(II) complexes of pentadentate 17-membered macrocyclic diamidodiamines with N, O or S as additional donors.
abstract: The crystal structures of (2,6-dioxo-1,4,7,11,14-pentaazacycloheptadecanato)copper(II) tetrahydrate, [Cu(C(12)H(23)N(5)O(2))].4H(2)O, (I), (3,16-dioxo-1-oxa-4,8,11,15-tetraazacycloheptadecanato)copper(II) pentahydrate, [Cu(C(12)H(22)N(4)O(3))].5H(2)O, (II), and (3,16-dioxo-1-thia-4,8,11,15-tetraazacycloheptadecanato)copper(II) trihydrate, [Cu(C(12)H(22)N(4)O(2)S)].3H(2)O, (III), are reported. The coordination geometry in each case is approximately square pyramidal with two amine groups and two deprotonated amide groups in the basal plane. The apical position is occupied by an amine group, an ether O atom or a thio S atom. Trigonal distortion increases in the sequence S < O < N as apical donor. The relation between the distortion in the basal plane of the complexes and the maxima in their electronic spectra is discussed.
authors.affiliation: Department of General and Inorganic Chemistry, Ghent University, Krijgslaan 281, B-9000 Ghent, Belgium. gerrit.herman@rug.ac.be
authors.forename: Gerrit G
authors.initials: GG
authors.lastname: Herman
authors.forename: Werner
authors.initials: W
authors.lastname: Lippens
authors.forename: Andr é M
authors.initials: Aé
authors.lastname: Goeminne A
authors.forename: Mathieu
authors.initials: M
authors.lastname: Steenland
authors.forename: Norbert M
authors.initials: NM
authors.lastname: Blaton
mesh_terms: D003300:Copper / Q000737:chemistry*; D018360:Crystallography, X-Ray; D003959:Diamines / Q000737:chemistry*; D006844:Hydrocarbons, Cyclic / Q000737:chemistry*; D006860:Hydrogen Bonding; D015394:Molecular Structure; D009584:Nitrogen / Q000737:chemistry; D009942:Organometallic Compounds / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry; D013455:Sulfur / Q000737:chemistry
chemical_list: D003959:Diamines; D006844:Hydrocarbons, Cyclic; D009942:Organometallic Compounds; D013455:Sulfur; D003300:Copper; D009584:Nitrogen; D010100:Oxygen