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A family of six polyoxometalate-based magnetic compounds were synthesized by anchoring N-oxide type TEMPO radicals onto an Anderson type polyoxometalate cluster. The complexes were structurally characterised by single crystal X-ray diffraction and the intramolecular paramagnetic interactions between TEMPO radicals and Mn ions of the resulting hybrids were investigated in detail by electron paramagnetic resonance and the Evans NMR method. [ABSTRACT FROM AUTHOR]

We report a {Cu16} embedded within a {W44} cluster containing four cubane-like [Cu4O4] units within an isopolyoxotungstate (isoPOT) in a {Na4Cu4[(H2W11O38) (CH3COO)(OH)3]}4·88H2O (1) and a polyanion Cu-linked {W11} chain Na6Cu2[(H2W11O38)(CH3COO)(OH)]·26H2O (2). Electronically, the redox properties show that both compounds 1 and 2 undergo irreversible reductions resulting in the demetalation of the compounds, whilst the magnetic behavior of 1 and 2 shows a weak antiferromagnetic and a stronger ferromagnetic coupling, respectively. [ABSTRACT FROM AUTHOR]

The new tungstatoiodate, α-[H5W18O59(IO3)]6−, containing IVO3− within a {W18O54} metal oxide framework has been prepared and shown by X-ray crystallography and mass spectrometry to be derived from the fully oxidised [H3W18O56(IO6)]6− by two-electron reduction accompanied by a redox-triggered structural rearrangement where three I–O covalent bonds are broken. [ABSTRACT FROM AUTHOR]

The synthesis of a series of discrete lanthanide-capped polyoxovanadate cages is presented along with magnetic and electrochemical measurements which reveal a redox active dodecavanadate cluster with potential as a new functional building unit in polyoxovanadate chemistry. [ABSTRACT FROM AUTHOR]

A family of six polyoxometalate-based magnetic compounds were synthesized by anchoring N-oxide type TEMPO radicals onto an Anderson type polyoxometalate cluster. The complexes were structurally characterised by single crystal X-ray diffraction and the intramolecular paramagnetic interactions between TEMPO radicals and Mn ions of the resulting hybrids were investigated in detail by electron paramagnetic resonance and the Evans NMR method.

We report a {Cu 16 } embedded within a {W 44 } cluster containing four cubane-like [Cu 4 O 4 ] units within an isopolyoxotungstate (isoPOT) in a {Na 4 Cu 4 [(H 2 W 11 O 38 ) (CH 3 COO)(OH) 3 ]} 4 ·88H 2 O (1) and a polyanion Cu-linked {W 11 } chain Na 6 Cu 2 [(H 2 W 11 O 38 )(CH 3 COO)(OH)]·26H 2 O (2). Electronically, the redox properties show that both compounds 1 and 2 undergo irreversible reductions resulting in the demetalation of the compounds, whilst the magnetic behavior of 1 and 2 shows a weak antiferromagnetic and a stronger ferromagnetic coupling, respectively.

We show how an array of ion-sensitive-field-effect-transistors can be used to both spatially and temporally image the oscillating pH/ion waves produced by the Belousov-Zhabotinsky (BZ) reaction with high resolution., (This journal is © The Royal Society of Chemistry 2012)