Tetrahydrofuran has been found to be a convenient solvent for the preparation of complexes of manganese(II) the ‘hardest’ 3d metal ion, with o-phenylenebis(dimethylarsine)(pdma) and o-phenylene(dimethylarsine)(dimethylastibine)(pdads), bidentate ligands containing ‘soft’ arsenic and antimony donors. The i.r., electronic reflectance, and e.p.r. spectra indicate a trans-octahedra geometry for these [Mn(L–L)2X2](X
已发现
四氢呋喃是方便的溶剂,用于制备“最难”的3d
金属离子
锰(II)与邻苯二甲撑双(二甲基s)(pdma)和邻苯二甲撑(二甲基ar)(二甲基阿司匹丁)(pdads)的配合物),含有“软”
砷和
锑供体的双齿
配体。红外光谱,电子反射光谱和epr光谱表明这些[Mn(L–L)2 X 2 ](X = Cl,Br或I)物种的反八面体几何形状。Epr证据还表明,痕量的
水分很容易分解这些配合物,并形成[MnX 4 ] 2–离子。