Structural characterization of ferromagnetic bridged-acetato and -dichlorido copper(II) complexes based on bicompartmental 4-t-butylphenol.

The reaction of Cu(II) salts with 2,6-bis[bis(2-pyridylmethyl)aminomethyl]-4- t -butylphenol (L t-Bu -OH) afforded two bridged-phenoxido/hydroxido complexes. The dinuclear bridged acetate species [Cu 2 (μ-L t-Bu -O)(μ-CH 3 COO)](PF 6 ) 2 ( 1 ) and the 1D polymeric doubly-bridged-chlorido {[Cu 2 (μ-L t-Bu -OH)(μ-Cl) 2 ](ClO 4 ) 2 ·4H 2 O} n ( 2 ). The two complexes were structurally characterized. Both complexes revealed ferromagnetic interactions; moderate in complex 1 ( J = + 30.8 cm − 1 ) and very weak ( J = + 2.25 cm −1 ) in 2 . [ABSTRACT FROM AUTHOR]