Abstract:
The synthesis, crystal structure and magnetic properties of an oxamate-containing erbium(III) complex, namely, tetrabutylammonium aqua[N-(2,4,6-trimethylphenyl)oxamato]erbium(III)-dimethyl sulfoxide-water (1/3/1.5), (C16H36N)[Er(C11H12NO3)4(H2O)]·3C2H6OS·1.5H2O or n-Bu4N[Er(Htmpa)4(H2O)]·3DMSO·1.5H2O (1), are reported. The crystal structure of 1 reveals the occurrence of an erbium(III) ion, which is surrounded by four N-phenyl-substituted oxamate ligands and one water molecule in a nine-coordinated environment, together with one tetrabutylammonium cation acting as a counter-ion, and one water and three dimethyl sulfoxide (DMSO) molecules of crystallization. Variable-temperature static (dc) and dynamic (ac) magnetic measurements were carried out for this mononuclear complex, revealing that it behaves as a field-induced single-ion magnet (SIM) below 5.0 K.
摘要:
合成,含草酸盐的铒(III)配合物的晶体结构和磁性,即,四丁基铵水溶液[N-(2,4,6-三甲基苯基)氧杂]铒(III)-二甲基亚砜-水(1/3/1.5),(C16H36N)[Er(C11H12NO3)4(H2O)]·3C2H6OS·1.5H2O或n-Bu4N[Er(Htmpa)4(H2O)]·3DMSO·1.5H2O(1),已报告。1的晶体结构揭示了铒(III)离子的存在,在九配位环境中被四个N-苯基取代的草甲酸配体和一个水分子包围,与一个作为抗衡离子的四丁基铵阳离子一起,和一个水和三个二甲基亚砜(DMSO)分子的结晶。对该单核络合物进行了变温静态(dc)和动态(ac)磁测量,揭示它表现为低于5.0K的场感应单离子磁体(SIM)。