Two new lanthanide complexes with ethoxybenzene-substituted nitronyl nitroxide radical（NIT-C_8H_9O） and hexafluoroacetylacetonate（hfac） ligand,[Gd（NIT-C_8H_9O）_2（hfac）_3]·C_7H_（16）（1） and [Tb（NIT-C_8...Two new lanthanide complexes with ethoxybenzene-substituted nitronyl nitroxide radical（NIT-C_8H_9O） and hexafluoroacetylacetonate（hfac） ligand,[Gd（NIT-C_8H_9O）_2（hfac）_3]·C_7H_（16）（1） and [Tb（NIT-C_8H_9O）_2（hfac）_3]·C_7H_（16）（2）,have been successfully synthesized and characterized by IR spectroscopy,elemental analyses,thermogravimetry analyses,and single-crystal X-ray diffraction.Both 1 and 2 exhibit a mononuclear structure in which the nitronyl nitroxide radical and hfac ligand act as monodentate and bidentate chelating modes,respectively.Magnetic studies show that ferromagnetic interactions（between intramolecular Gd and radical） and antiferromagnetic interactions（between the intramolecular radicals） coexist in complex 1.No obvious frequency dependent out-of-phase signals were observed in complex 2.展开更多
基金supported by the special funds of Guangdong college students'scientific and technological innovation cultivation(pdjh2015a0562)the Natural Science Foundation of Guangdong Province(2015A030310407)+1 种基金the Natural Science Foundation of Zhaoqing University(201532)the Project of Provincial Key Platform of Guangdong Province(2014KTSPT040)
文摘Two new lanthanide complexes with ethoxybenzene-substituted nitronyl nitroxide radical（NIT-C_8H_9O） and hexafluoroacetylacetonate（hfac） ligand,[Gd（NIT-C_8H_9O）_2（hfac）_3]·C_7H_（16）（1） and [Tb（NIT-C_8H_9O）_2（hfac）_3]·C_7H_（16）（2）,have been successfully synthesized and characterized by IR spectroscopy,elemental analyses,thermogravimetry analyses,and single-crystal X-ray diffraction.Both 1 and 2 exhibit a mononuclear structure in which the nitronyl nitroxide radical and hfac ligand act as monodentate and bidentate chelating modes,respectively.Magnetic studies show that ferromagnetic interactions（between intramolecular Gd and radical） and antiferromagnetic interactions（between the intramolecular radicals） coexist in complex 1.No obvious frequency dependent out-of-phase signals were observed in complex 2.
