A new pyridine-based macrocycle 6-phenyl-15-aza-6-phospha-3,9-dithiabicyclo[9,3,1]pentadeca-1(15),11,13-triene (L), containing the NS2P donor set, was prepared and characterised. The reaction of L with CoCl2 in acetonitrile yielded the double complex salt [Co(Lox)2] [CoCl3(Lox)]2 where the phosphine groups of the ligands L are in their phosphine-oxide form (Lox). The single crystal structure of the complex was determined by X-ray diffraction methods. Crystal data: triclinic, space group P-1 (No. 2), a = 11.634(1), b = 19.251(2), c = 9.497(1) Å, α = 93.65(1), β = 109.711(9), γ = 95.12(1)°, U = 1984.4(4) Å3, Z = 1. In each [CoCl3(Lox)]- anion the Co(II) atom is in a slightly distorted tetrahedral environment defined by three chlorine atoms and the phosphine-oxide oxygen atom of one Lox ligand, whereas in the [Co(Lox)2]2+ cation the Co(II) atom lies in a distorted octahedral environment of two pyridine nitrogen atoms, two thioethersulfur atoms and two phosphine-oxide oxygen atoms provided by two facially coordinating Lox ligands. The magnetic behaviour of the complex was investigated.
|Journal||Inorganica Chimica Acta|
|Publication status||Published - 1 Apr 1997|
- Cobalt complexes
- Crystal structures
- Macrocyclic complexes
- Phosphamacrocycle complexes