Wydział Chemii

Urszula Kalinowska-Lis

Bogumiła Żurowska

Katarzyna Ślepokura

Justyn Ochocki

2011

Inorganica Chimica Acta

376

18-22

10.1016/j.ica.2011.05.022

Naukowa

Angielski

Artykuł

A new ethyl bis(pyridin-2-ylmethyl)phosphate (2-bis(pm)Ope) ligand has been synthesized and used for synthesis of copper(II) and zinc(II) complexes of the formula [MCl₂(2-bis(pm)Ope)] [M = Cu(II), Zn(II)]. Despite having the same general formula, Cu(II) and Zn(II) complexes are not isostructural. The Zn(II) complex is four coordinated (MCl₂N₂) forming probably tetrahedral structure whereas the Cu(II) complex of distorted square pyramidal geometry is five coordinated (MCl₂ON₂). The later compound not only coordinates by two nitrogen atoms of pyridine rings but also by the oxygen atom of pyridin-2-ylmethoxyl residue. The compound (2-bis(pm)Ope) has been obtained as the product of diethyl (pyridin-2-ylmethyl)phosphate’s (2-pmOpe) transestrification. The compounds have been identified and characterized by IR, far-IR, ¹H NMR, ³¹P NMR and elemental analyses. The crystal structure of copper(II) complex i.e. [CuCl₂(2-bis(pm)Ope)] has been determined by the X-ray diffraction method. The low temperature magnetic study reveals significant antiferromagnetic interaction between copper centers through the H-bond system.

Phosphate esters, Transestrification, Copper(II) complex, Zinc(II) complex, Magnetism

https://doi.org/10.1016/j.ica.2011.05.022

http://www.elsevier.com