PlumX Metrics
Embed PlumX Metrics

Structural and magnetic characterization of tetranuclear [Ni(II) 2 Ln(III) 2 ] complexes bearing tetra-branched Schiff base ligands

Polyhedron, ISSN: 0277-5387, Vol: 212, Page: 115584
2022
  • 3
    Citations
  • 0
    Usage
  • 2
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

Article Description

A series of tetranuclear [Ni(II) 2 Ln(III) 2 ] complexes of general formula [Ni 2 Ln 2 ( L )(H 2 O) 9 (OH) 4 Cl]∙3H 2 O∙Cl ( 1, 2, 5 ) (Ln = Dy ( 1 ), Tb ( 2 ), Ho ( 5 )) and [Ni 2 Ln 2 ( L )(H 2 O) 12 Cl] ∙3H 2 O∙5Cl ( 3, 4, 6, 7 ) (Ln = Gd ( 3 ), Sm ( 4 ), Nd ( 6 ), Pr ( 7 )); H 4 L  =  N, N ’, N ’’, N ’’’-tetra(3-methoxysalicylidene)-pentaerythritol) have been synthesized. The molecular structures and magnetic properties of 1 – 7 are reported. Structural analysis indicated that this family of clusters consists of a tetranuclear [Ni(II) 2 Ln(III) 2 ] core, supported by a tetrapodal Schiff base ligand. Both Ni(II) ions adopt a distorted octahedral coordination environment, whilst the two terminal Ln(III) ions exhibit distorted tricapped trigonal prismatic geometries and are coordinated by eight or nine oxygen donor atoms. Magnetic measurements revealed that the Dy derivative of complex 1 displays typical d single-molecule magnet behaviour with the presence of slow magnetic relaxation. By contrast, complexes 2 – 7, no obvious SMM behaviour was exhibited, however for the Gd derivative 3, a significant magnetocaloric effect was observed.

Provide Feedback

Have ideas for a new metric? Would you like to see something else here?Let us know