Versatile host-guest chemistry and networking ability of the cyclic tungstophosphate {P 8W 48}: Two further manganese derivatives

Two new manganese derivatives of the cyclic polyoxotungstate [H7P8W48O184]33− are reported, providing further illustration of its versatile host–guest chemistry. Relatively small changes in the synthetic conditions result in different crystalline compounds 1 and 2 with respectively eight and six manganese(II) ions per {P8W48} unit. The cyclic cavity of the polyanion accommodates respectively six and four manganese(II) in 1 and 2. In addition, extra tungsten groups are grafted onto the inside of the cavity in 2. The cyclic subunits are differently linked into chains by manganese(II) ions in 1 and 2.