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The new PtVO(SOCR)4 lantern complexes, 1 (R = CH3) and 2 (R = Ph) behave as neutral O-donor ligands to Ln(OR)3 with Ln = Ce, Nd. Four heterotrimetallic complexes with linear {LnOVPt} units were prepared: [Ln(ODtbp)3{PtVO(SOCR)4}] (Ln = Ce, 3Ce (R = CH3), 4Ce (R = Ph); Nd, 3Nd (R = CH3), 4Nd (R = Ph); ODtbp = 2,6-ditertbutylphenolate). Magnetic characterization confirms slow magnetic relaxation behaviour and suggests antiferromagnetic coupling across {Ln-O[double bond, length as m-dash]V} in all four complexes, with variations tunable as a function of Ln and R.

Oxidation of distorted square-planar perfluoropinacolate Co compound [CoII(pinF)2]2-, 1, to [CoIII(pinF)2]1-, 2, is reported. Rigidly square-planar 2 has an intermediate-spin, S = 1, ground state and very large zero-field splitting (ZFS) with D = 67.2 cm-1; |E| = 18.0 cm-1, (E/D = 0.27), g⊥ = 2.10, g‖ = 2.25 and χTIP = 1950 × 10-6 cm3 mol-1. This Co(iii) species, 2, reacts with ROS to oxidise two (pinF)2- ligands to form tetrahedral [CoII(Hpfa)4]2-, 3.

Herein we report the first structural characterization of a Pt(iv)-kappa(3)-terpyridine species, [Pt((t)Bu(3)tpy)Cl(3)][AuCl(2)], which can be prepared by oxidation with [AuCl(4)](-). The syntheses and characterization of [Pt((t)Bu(3)tpy)Cl(3)]Cl ((t)Bu(3)tpy is 4,4',4''-tri-tert-butyl-2,2':6',2''-terpyridine), as well as the platinum(ii) complexes [Pt((t)Bu(3)tpy)Cl]Cl and [Pt((t)Bu(3)tpy)Cl][AuCl(2)] are reported.