Molybdenum(VI) complexes from diols and aminoalchols: the occurrence of MoO2, Mo2O3, and Mo2O5 core structures
作者:Carolyn Knobler、Bruce R. Penfold、Ward T. Robinson、Cuthbert J. Wilkins、Shim Hian Yong
DOI:10.1039/dt9800000248
日期:——
behaviour of molybdenum(VI) towards diols and aminoalcohols is discussed, particularly in relation to newly determined reference structures. A pinacol (H2pin) complex, typical of the yellow vicinal diol derivatives, is constituted [MoO(pin)(Hpin)]2O, with an Mo2O3 core. An Mo2O5 core is present in the anion [MoO2(Hnta)}2O]2–, formed by nitrilotriacetic acid (H3nta) at low pH. Several new complexes in which
讨论了钼(VI)对二醇和氨基醇的配位行为,特别是与新确定的参考结构有关的配位行为。黄色邻二元醇衍生物典型的频哪醇(H 2 pin)络合物由[MoO(pin)(Hpin)] 2 O组成,具有Mo 2 O 3核。在低pH下由次氮基三乙酸(H 3 nta)形成的阴离子[MoO 2(Hnta)} 2 O] 2–中存在Mo 2 O 5核。已经制备了几种可以推断配体桥联的新配合物。其中之一,[MoO 2(Hpin)(OMe)} 2通过X射线分析显示衍生自黄色松果酸酯的]·2MeOH具有甲氧基桥连。Mo 2 O 3磁芯的电桥振动接近750 cm –1,但是Mo 2 O 5磁芯的能带模式是可变的。MoO 1b Mo振动涉及由螯合配体提供的氧桥,在625-650 cm -1范围内产生一个ir带。