The synthesis of novel dinuclear lanthanide complexes with formulas[(LnL_(3))(LiL)(MeOH)](1-3)and[(LnL_(3))(LiL)(H_(2)O)](4-6)(Ln=Eu(III),Tb(III),Dy(III))based on functionalized lithiumβ-diketonate(LiL)is reported.Th...The synthesis of novel dinuclear lanthanide complexes with formulas[(LnL_(3))(LiL)(MeOH)](1-3)and[(LnL_(3))(LiL)(H_(2)O)](4-6)(Ln=Eu(III),Tb(III),Dy(III))based on functionalized lithiumβ-diketonate(LiL)is reported.The coordination environment of the Ln(III)ion is formed by oxygen atoms of both the 1,3-dicarbonyl moiety and the acetal group.Depending on the solvent used for the crystallization,methanol or water molecules participate in the coordination with Li(I)ions affecting the crystal structure of complexes.In contrast to[(LnL_(3))(LiL)(H_(2)O)]4-6,a series of complexes[(LnL_(3))(LiL)(MeOH)]1-3 showed mechanoluminescence properties,thereby demonstrating the relationship between the observed optical properties and crystal packing architecture.The magnetic measurements of[(LnL_(3))(LiL)(MeOH)]1-3 revealed SMM behavior of[(DyL_(3))(LiL)(MeOH)]_(3)at low temperatures(Ueff is 37.7 cm^(−1)).展开更多
基金Financial support of this work(the synthesis part and structure characterization)by the Russian Foundation for Basic Research(grant no.mol_a_dk 16-33-60048)is gratefully acknowledgedASB is thankful to the FASO(0033-2017-0001)VIS is thankful to the Ural Branch of the Russian Academy of Sciences(AAAA-A18-118020290158-5).
文摘The synthesis of novel dinuclear lanthanide complexes with formulas[(LnL_(3))(LiL)(MeOH)](1-3)and[(LnL_(3))(LiL)(H_(2)O)](4-6)(Ln=Eu(III),Tb(III),Dy(III))based on functionalized lithiumβ-diketonate(LiL)is reported.The coordination environment of the Ln(III)ion is formed by oxygen atoms of both the 1,3-dicarbonyl moiety and the acetal group.Depending on the solvent used for the crystallization,methanol or water molecules participate in the coordination with Li(I)ions affecting the crystal structure of complexes.In contrast to[(LnL_(3))(LiL)(H_(2)O)]4-6,a series of complexes[(LnL_(3))(LiL)(MeOH)]1-3 showed mechanoluminescence properties,thereby demonstrating the relationship between the observed optical properties and crystal packing architecture.The magnetic measurements of[(LnL_(3))(LiL)(MeOH)]1-3 revealed SMM behavior of[(DyL_(3))(LiL)(MeOH)]_(3)at low temperatures(Ueff is 37.7 cm^(−1)).
