featuring an ethylene (2) or a methylene linker (5) between the benzimidazole and the phosphine have been prepared. These precursors for bidentate carbene/phosphine ligands react with [RuCp*(μ3-Cl)]4 under tautomerization with formation of complexes of type [RuCp*Cl(L)] ([6] and [7], L = NR,NH-carbene/phosphine ligand). The crystal structures of [6] and [7] have been determined by X-ray diffraction. These
制备了两种新的
二苯基膦取代的
苯并咪唑,其特征在于在
苯并咪唑和膦之间存在
乙烯(2)或亚甲基连接基(5)。这些前体为二齿卡宾/
膦配体与[RuCp *(μ反应3 -Cl)] 4下互变异构化与地层类型的复合物的[RuCp * CL(L)]([ 6 ]和[ 7 ],L = NR, NH-卡宾/
膦配体)。[ 6 ]和[ 7的晶体结构通过X射线衍射测定。这些研究表明,
苯并咪唑-2-亚烷基和膦之间的桥的长度决定了卡宾/膦螯合环的几何参数以及膦的供体性质。阿1个的1 H NMR滴定络合物[ 6 ]与
DMPU揭示了(卡宾)的形成N-H ... O(
DMPU)氢在溶液中的结合。