Polynuclear copper(II) complexes of di-2-pyridyl ketone derivatives and tert-butylphosphonic acid: crystal structures and magnetic behaviour?

Dalton Transactions Pub Date: 2010-03-11 DOI: 10.1039/B925793D

Abstract

The syntheses, structural characterization, and magnetic behavior of four new copper(II) complexes derived from tert-butylphosphonic acid and di-2-pyridyl ketone with formulae [Cu{(py)2C(OH)2}](C4H9PO3H)2·(H2O)2 (1), [Cu2(μ2-C4H9PO3H){(py)2C(OCH2CH3)O}(μ2-NO3)(NO3)(H2O)]n·(H2O)n (2), [Cu4(μ2-C4H9PO3H)2(μ4-C4H9PO3)2{(py)2C(OCH3)O}2]·2H2O (3) and Na[Cu6(μ3-C4H9PO3)3{(py)2C(OCH3)O}3(μ6-NO3)(NO3)3] (4) (C4H9PO3H2 = tert-butylphosphonic acid, (py)2C(OH)2 = bis(2-pyridyl)methanediol, {(py)2C(OCH2CH3)O}? = bis(2-pyridyl)ethoxymethanolato {(py)2C(OCH3)O}? = bis(2-pyridyl)methoxymethanolato, are reported. 1 is a mononuclear compound, with tert-butylhydrogenphosphonate in the anionic form. 2 is a nitrate bridged monodimensional compound with 2.110 tert-butylhydrogenphosphonate bridging ligands. 3 is a tetranuclear compound with 2.110 tert-butylhydrogenphosphonate and 3.111 tert-butylphosphonate bridging ligands and 4 is a hexanuclear compound with 3.111 tert-butylphosphonate bridging ligands. The magnetic properties of 2-4 are reported.

Graphical abstract: Polynuclear copper(II) complexes of di-2-pyridyl ketone derivatives and tert-butylphosphonic acid: crystal structures and magnetic behaviour
Recommended Literature