Terminal NiII−OH/−OH2 complexes in trigonal bipyramidal geometries derived from H2O
作者:Nathanael Lau、Yohei Sano、Joseph W. Ziller、A.S. Borovik
DOI:10.1016/j.poly.2016.11.015
日期:2017.3
The preparation and characterization of two NiII complexes are described, a terminal NiII-OH complex with the tripodal ligand tris[(N)-tertbutylureaylato)-N-ethyl)]aminato ([H3buea]3-) and a terminal Ni II-OH2 complex with the tripodal ligand N,N',N″-[2,2',2″-nitrilotris(ethane-2,1-diyl)]tris(2,4,6-trimethylbenzenesulfonamido) ([MST]3-). For both complexes, the source of the -OH and -OH2 ligand is
描述了两种NiII配合物的制备和表征,一种末端NiII-OH配合物与三脚架配体三[(N)-叔丁基脲基-N-乙基)]氨基([H3buea] 3-)和一个末端Ni II-OH2配合物与三脚架配体N,N',N''-[2,2',2''-硝腈(乙烷-2,1-二基)] tris(2,4,6-三甲基苯磺酰胺基)([MST] 3-) 。对于两种配合物,-OH和-OH2配体的来源都是水。使用垂直模式X波段电子顺磁共振,傅立叶变换红外光谱,紫外可见分光光度法对盐K2 [NiIIH3buea(OH)]和NMe4 [NiIIMST(OH2)]进行了表征,并使用循环伏安法评估了其电化学性质。通过X射线衍射方法确定的这些配合物的固态结构表明,它们采用了扭曲的三角双锥几何形状,5配位NiII配合物的不寻常结构。此外,NiII-OH和NiII-OH2单元与[H3buea] 3-和[MST] 3-配体形成分子内氢键网络。通