title: Predictable self-assembled [2×2] Ln(III)4 square grids (Ln = Dy,Tb)-SMM behaviour in a new lanthanide cluster motif.
abstract: The ditopic carbohydrazone ligand (L1) produces the square, self-assembled [2×2] grids [Dy(4)(L1)(4)(OH)(4)]Cl(2) (1) and [Ln(4)(L1)(4)(μ(4)-O)(μ(2)-1,1-N(3))(4)] (Ln = Dy (2), Tb (3)), with 2 exhibiting SMM behaviour. Two relaxation processes occur with U(eff) = 51 K, 91 K in the absence of an external field, and one with U(eff) = 270 K in the presence of a 1600 Oe optimum field.
authors.affiliation: Department of Chemistry, Memorial University, St. John's, NL A1B3X7, Canada.
authors.forename: Muhammad Usman
authors.initials: MU
authors.lastname: Anwar
authors.forename: Laurence Kenneth
authors.initials: LK
authors.lastname: Thompson
authors.forename: Louise Nicole
authors.initials: LN
authors.lastname: Dawe
authors.forename: Fatemah
authors.initials: F
authors.lastname: Habib
authors.forename: Muralee
authors.initials: M
authors.lastname: Murugesu