机构地区: 厦门医学院口腔医学系,厦门361023
出 处: 《无机化学学报》 2017年第9期1625-1630,共6页
摘 要: 选择3种不同尺寸含氮配体(哌嗪、咪唑和三氮唑)与三羟甲基丙烷(H3tmp)和Fe Cl3采用溶剂热反应合成3例六核Fe髥合物:(C5H14N2)[Fe6(μ6-O)Cl6(tmp)4]·2H2O·CH3OH(1)、(C3H5N2)2[Fe6(μ6-O)Cl6(tmp)4](2)和(C4H8N3)3(C2H4N3)[Fe12(μ6-O)2Cl12(tmp)8]·3CH3OH(3),并对它们的结构进行表征。发现三元醇配体有利于合成高核金属簇。3个化合物具有相同的阴离子簇[Fe6(μ6-O)Cl6(tmp)4]2-。通过晶体学参数,元素分析,红外等手段证实,在化合物1和3的体系中,氮杂环配体经历了N-和C-烷基化反应。 Solvothermal reactions of 1,1,1-tris(hydroxymethyl)propane (H3tmp) and FeC13 by using different counter ions resulted in three hexanuclear iron(m) clusters (CsN2H14)[Fe6(μ6-O)C16(tmp)4]·2H20· CH3OH (1), (C3N2H5)2[Fe6(μ-O)C16(tmp)4] (2), and (C4N3H8)3(C2N3H4)[Fe12(μ6-O)2Cl12(tmp)8] .3CH3OH (3), whose structures were characterized. The tripodal alcohols ligands are very useful in constructing high-nuclearity metal clusters. In all cases, similar anionic cluster [Fe6(μ6-O)C16(tmp)4]^2- is formed by six Fe(Ⅲ) ions, four tmp3- ligands, one center 02- ion, and six C1- ions. Within the system of compounds 1 and 3, the nitrogen-containing heterocyclic ligands experience N- and C- alkylation reactions, which is validated by the crystallographic parameters, elemental analyses, and IR.