Magnetic superexchange involving tetrahedral anions: One-dimensional antiferromagnetic interactions via sulfate anions in M(2,9-di-CH3-1,10-phenanthroline)SO4 (M = Mn, Fe, Co, Ni, Cu)

Ab Initio Crystal Structure Determination of VO(H2PO2)2.cntdot.H2O from X-ray and Neutron Powder Diffraction Data. A Monodimensional Vanadium(IV) Hypophosphite

“…Magnetic superexchange involving diamagnetic tetrahedral anions such as S042™, P043~, AsG43™, Mo042™, and Re04~h as been reported in the literature. 33 The involvement of phosphate groups in the spin transfer between vanadium atoms in oxovanadium(IV) phosphates (V0(HP04).nH20 ( = 0.5,1, 2 (a), 2 (ß), 4) and (V0)2P207) has been proved unambiguously by using 31P solid-state NMR as a local probe.6•29•32 On the basis of topological considerations about the different bridging modes of the phosphate groups in oxovanadium(IV) phosphates, a consistent qualitative interpretation of the observed magnetic properties has been done.4•6•32…”