A family of fourteen soluble stable macrocyclic [NiII3LnIII] heterometallic 3d–4f complexes

摘要: A family of fourteen tetranuclear, 3d–4f heterometallic nickel(II)–lanthanide(III) complexes the hexaimine macrocycle (LPr)6−, with general formula NiII3LnIII(LPr)(NO3)3·xsolvents (LnIII = LaIII, CeIII, PrIII, NdIII, SmIII, EuIII, GdIII, TbIII, DyIII, HoIII, ErIII, TmIII, YbIII or LuIII), were prepared in a one-pot synthesis using 3 : 1 : 3 : 3 reaction nickel(II) acetate, appropriate lanthanide(III) nitrate, dialdehyde 1,4-diformyl-2,3-dihydroxybenzene (H2LAld) and 1,3-diaminopropane. In addition, three tetranuclear H2LAld, NiII3LnIII(LAld)3(NO3)3·xsolvents, deliberately DyIII YbIII) as effect they represent intermediates en route to above macrocyclic complexes. Whilst single crystals not forthcoming, X-ray crystal structure determinations on NiII3LnIII(LAld)3(NO3)3·xsolvents confirmed that large ten-coordinate ion is bound central O6 pocket while smaller six-coordinate ions are outer O4 pockets. all cases, addition diamine this intermediate (all one pot) gives tetrametallic [3 + 3] product. The magnetic properties measured down 1.8 K check for Single-Molecule Magnet behaviour, but no slow dynamics magnetisation was observed.