作者:Geoffrey T. Andrews、Ian J. Colquhoun、William McFarlane、Samuel O. Grim
DOI:10.1039/dt9820002353
日期:——
methods respectively for 65 related derivatives of [Mo(CO)6] and [W(CO)6] with (mainly) phosphorus ligands. The chemical shifts of the two nuclei are remarkably parallel, those for l83W being ca. 1.7 times more sensitive to changes in chemical environment than those for 95Mo. The chemical shifts are temperature-dependent, and trends in them can be largely accounted for by variations in the mean electronic
分别通过直接观察和通过多共振方法对65个具有(主要)磷配体的[Mo(CO)6 ]和[W(CO)6 ]相关衍生物进行了测量,得出95-钼和183-钨nmr光谱。两个核的化学位移是显着平行的,那些L83 W的各CA。对化学环境变化的敏感性是95倍的1.7倍Mo。化学位移与温度有关,其趋势可在很大程度上由平均电子激发能的变化来解释。金属-磷自旋耦合常数是非常可预测的。在许多情况下,Mo-95的线宽很小,可以通过使用点电荷模型来广义地解释。