Hydrothermal synthesis of two supramolecular inorganic–organic hybrid phosphomolybdates based on Ni( ii ) and Co( ii ) ions: structural diversity and heterogeneous catalytic activities

Two new compounds (NHEPH 2 ) 5 [Ni II (P 4 Mo 6 O 31 ) 2 ]·6H 2 O ( 1 ) and {(NHEPH 2 ) 2 [Co II (H 2 O) 6 ]}[P 2 Mo 5 O 23 ]·2H 2 O ( 2 ) exhibited heterogeneous styrene oxidation by H 2 O 2 under mild conditions.