Synthesis, structure and magnetic properties of neutral Ni (II) tri-tert-butoxysilanethiolate cluster

A novel nickel(II) cluster [Ni6(μ-O)6{SSi(tBuO)3}6(H2O)6(NH3)4] 1 has been synthesized in reaction of NiCl2⋅ 6H2O with tri-tert-butoxysilanethiol and ammonia in water solution. The magnetic measurements show the presence of strong antiferromagnetic interactions between magnetic centers.

A neutral hexanuclear oxo-bridged nickel(II) cluster 1 has been obtained in the reaction of NiCl2 6H2O, ammonia and tri-tert-butoxysilanethiol in water. Ni(II) ions in 1 are coordinated by ammonia, water and (tBuO)3SiS -. Magnetic measurements show strong antiferromagnetic interactions between the six Ni(II) ions with a zero total spin ground state.Figure optionsDownload as PowerPoint slideHighlights
► A neutral hexanuclear oxo-bridged nickel (II) cluster has been synthesized.
► Metal ions coordinated by ammonia, water and (tBuO)3SiS−.
► The cluster exhibits the topology of a face-sharing double cubane.
► Magnetic measurements show strong antiferromagnetic interactions between Ni (II) ions.
► The total spin ground state of the compound is zero.