Studies of frequency pulling effects in the quasi-two-dimensional ferromagnet, manganese acetate tetrahydrate

New insights into the thermal stability of Mn12clusters: The case of complex [Mn12O12(O2CCCH)16(H2O)4]·3H2O and its thermolysis derived [Mn3(O2CCCH)6(H2O)4]·2H2O complex

“…These results are in agreement with those previously described for complex [Mn 3 (O 2 CCH 3 ) 4 (H 2 O) 4 ]•8H 2 O (5). 28 According to the linear disposition of the Mn 2+ cations within the repetitive trimeric unit, the Mn(II) ion with double multiplicity couples antiferromagnetically with each Mn(II) ion located on a fourfold multiplicity site, leading to a ferromagnetic entity with a spin S = 5/3 l B . Then, the resulting net magnetic moment S = 5/3 of each trimeric unit couples ferromagnetically within a layer, and the transition to the ordered state occurs at T = 3.19 K. The slight variation in the value of T with respect to that found for complex 3 most likely arises from the small structural variations between the structure of complexes 3 and 5, as previously described.…”