The variable-temperature magnetic properties of the two phenoxybridged di-iron complexes(Et4N)2[Fe2(o-OC6H4S)4](1) and (Et4N)2[Fe2(o-OC6H4S)2(o-OC6H4SH)2] (2) with o-mercaptophenol ligand are reported. The J values ob...The variable-temperature magnetic properties of the two phenoxybridged di-iron complexes(Et4N)2[Fe2(o-OC6H4S)4](1) and (Et4N)2[Fe2(o-OC6H4S)2(o-OC6H4SH)2] (2) with o-mercaptophenol ligand are reported. The J values obtained show weak antiferromagnetic interactions of the iron atoms in both complexes. The spin states are S=5/2 and S=1 for the Fe(Ⅲ) and Fe(Ⅱ) ions in (1) and (2), respectively. The crystal structure of (2) is also presented.展开更多
<正> New binuclear copper（Ⅱ） complexes, [Cu（samen）Cu（NO2-phen）]·H2O and [Cu（sampn）-Cu（NO2-phen）]·2H2O have been synthesized, where samen4-, sampn4-and NO2-phen denote N, N′-ethylenedisalicy...<正> New binuclear copper（Ⅱ） complexes, [Cu（samen）Cu（NO2-phen）]·H2O and [Cu（sampn）-Cu（NO2-phen）]·2H2O have been synthesized, where samen4-, sampn4-and NO2-phen denote N, N′-ethylenedisalicylamidate anion, N, N′-1, 2-propanedisalicylamidate anion and 5-nitro-1, 10-phenanthroline respectively. 3ased on IR, elemental analyses and electronic spectra, the complexes are proposed to have a phenoxy-bridged structure and to consist of the Cu（Ⅱ）ion in distorted planar environment. The complexes have been characterized with varlable-temperature magnetic susceptibility （4—300 K） and the observed data were fit to those from a modified Bleaney-Bowers equation by least-squares method, giving the exchange integral J=-63.0 cm-1（samen） and J=-46.5cm-1（sampn）. This indicates the existence of antiferromagnetic spin exchange interaction among the metal ions.展开更多
文摘The variable-temperature magnetic properties of the two phenoxybridged di-iron complexes(Et4N)2[Fe2(o-OC6H4S)4](1) and (Et4N)2[Fe2(o-OC6H4S)2(o-OC6H4SH)2] (2) with o-mercaptophenol ligand are reported. The J values obtained show weak antiferromagnetic interactions of the iron atoms in both complexes. The spin states are S=5/2 and S=1 for the Fe(Ⅲ) and Fe(Ⅱ) ions in (1) and (2), respectively. The crystal structure of (2) is also presented.
基金Project supported by the National Natural Science Foundation of China.
文摘<正> New binuclear copper（Ⅱ） complexes, [Cu（samen）Cu（NO2-phen）]·H2O and [Cu（sampn）-Cu（NO2-phen）]·2H2O have been synthesized, where samen4-, sampn4-and NO2-phen denote N, N′-ethylenedisalicylamidate anion, N, N′-1, 2-propanedisalicylamidate anion and 5-nitro-1, 10-phenanthroline respectively. 3ased on IR, elemental analyses and electronic spectra, the complexes are proposed to have a phenoxy-bridged structure and to consist of the Cu（Ⅱ）ion in distorted planar environment. The complexes have been characterized with varlable-temperature magnetic susceptibility （4—300 K） and the observed data were fit to those from a modified Bleaney-Bowers equation by least-squares method, giving the exchange integral J=-63.0 cm-1（samen） and J=-46.5cm-1（sampn）. This indicates the existence of antiferromagnetic spin exchange interaction among the metal ions.
