Drescher Née Oschmann Wiebke, Borner Corinna, Tindall Daniel J, Kleeberg Christian
Institut für Anorganische und Analytische Chemie, Technische Universität Carolo-Wilhelmina zu Braunschweig Hagenring 30 38106 Braunschweig Germany
RSC Adv. 2019 Jan 30;9(7):3900-3911. doi: 10.1039/c9ra00170k. eCollection 2019 Jan 25.
A series of five unsymmetrical platinum(ii) bis-boryl complexes, bearing two distinct boryl ligands, are obtained by the oxidative addition reaction of unsymmetrical diborane(4) derivatives, bearing either two different dialkoxy or one dialkoxy and one diamino boryl moiety, with [(PhP)Pt(CH)]. All five complexes were structurally and spectroscopically characterised. The bis-boryl platinum(ii) complexes exhibit slightly distorted square-planar -boryl structures with acute B-Pt-B angles, short B⋯B distances of 2.44-2.55 Å and relatively long -boryl P-Pt distances around 2.34 Å. The P-Pt NMR coupling constants are indicative for the strongly donating/-influencing boryl ligands. Despite the structural and spectroscopic data at hand no finally conclusive order of the donor properties/-influence of the boryl ligands can be deduced on the basis of these data. This may be explained by an (residual) interaction of two boryl ligands.
通过带有两个不同二烷氧基或一个二烷氧基和一个二氨基硼基部分的不对称二硼烷(4)衍生物与[(PhP)Pt(CH)]的氧化加成反应，得到了一系列五个带有两个不同硼基配体的不对称铂(II)双硼基配合物。对所有五个配合物进行了结构和光谱表征。双硼基铂(II)配合物呈现出略微扭曲的平面正方形硼基结构，具有尖锐的B-Pt-B角、2.44-2.55 Å的短B⋯B距离以及约2.34 Å的相对较长的硼基P-Pt距离。P-Pt NMR耦合常数表明硼基配体具有强给电子/影响作用。尽管有现有的结构和光谱数据，但基于这些数据无法最终确定硼基配体的给体性质/影响的顺序。这可能是由于两个硼基配体之间存在（残余）相互作用。
