Mixed-valent manganese phosphonate clusters prepared under microwave-assisted and ambient conditions†
Abstract
Mixed-valent manganese phosphonate clusters [MnII8MnIII2O2(O3PC10H7)4(C6H5CO2)10(py)4(H2O)2] (1) and [MnII4MnIII9O4(OH)2(O3PC10H7)10(C6H5CO2)5(py)8(H2O)6] (2) are reported. Compound 1 is the first example of manganese phosphonate clusters prepared through a microwave-assisted technique. While compound 2 is obtained under ambient condition, and exhibits slow magnetic relaxation behaviour at low temperature.