Copper(II) complexes of pentadentate 17-membered macrocyclic diamidodiamines with N, O or S as additional donors.
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.
Herman
Gerrit G
GG
Department of General and Inorganic Chemistry, Ghent University, Krijgslaan 281, B-9000 Ghent, Belgium. gerrit.herman@rug.ac.be
Lippens
Werner
W
Goeminne A
Andr é M
Aé
Steenland
Mathieu
M
Blaton
Norbert M
NM
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
D003959:Diamines; D006844:Hydrocarbons, Cyclic; D009942:Organometallic Compounds; D013455:Sulfur; D003300:Copper; D009584:Nitrogen; D010100:Oxygen