bond–platinum–triple bond sequence (trans-bis(ferrocenylethynyl)bis(triethylphosphine)platinum(II), 2) have been synthesized. The electronic coupling between the ferrocene groups has been estimated from the intensity of the intervalence transition in the electrochemically generated mixed valence complexes. Upon insertion of a platinum fragment a weak attenuation was observed, with the Vab parameter decreasing
双二茂铁化合物通过两个三键(1,4-二(二茂铁基)丁二炔1)或三键-铂-三重键序列(反式双(二茂铁基乙炔基)双(三乙基膦)铂(II),2)已经合成。二茂铁基团之间的电子偶合已经从电化学产生的混合化合价络合物中的间隔跃迁的强度进行了估计。插入铂片段后,观察到弱衰减,V ab参数从1的0.036 eV降低到2的0.025 eV。还进行了理论研究,使用DFT进行几何优化,并使用ExtendedHückel理论进行电子耦合估计。已发现,对于2模型,电子耦合从1的0.090 eV降低到0.022 eV 。在这项工作的第二部分中,我们描述了结合了配体氢三[6-(乙氧基羰基)吲唑-1-基]硼酸酯的两个分子马达的合成,该配体表现出三个侧基酯基,专用于锚定在氧化物表面上。该定子通过钌中心连接到带有二茂铁末端电活性基团的五取代的环戊二烯基转子,该转子通过苯基乙炔基间隔基(配合物4)或含有双乙炔基的间隔基连接反铂绝缘碎片(复合物8)。
A star-shaped ruthenium complex with five ferrocenyl-terminated arms bridged by trans-platinum fragments
We present the synthesis of the new heteropolytopic penta(4-ethynylphenyl)cyclopentadiene ligand, its complexation through the Cp ring to ruthenium tris(indazolyl)borate and through the terminal alkyne groups to five ferrocenyl ethynyl platinum units, yielding an undecanuclear heterotrimetallic complex.
development of a one‐pot indium(III)‐mediated “N‐deprotection/ester reductive sulfidation” sequence led to major improvement in the synthesis of thioether‐functionalized hydrotris(indazolyl)borate ligands, used as anchoringplatforms in a family of surface‐mounted rotarymolecular motors and gears.
A short route to prepare a ruthenium complex with a pentaphenyl substituted cyclopentadienyl and a hydrotris(indazolyl)borate ligand is described: this complex can be seen as an organometallic molecular turnstile.
Synthesis and Reactivity of [Penta(4-halogenophenyl)cyclopentadienyl][hydrotris(indazolyl)borato]ruthenium(II) Complexes: Rotation-Induced Fosbury Flop in an Organometallic Molecular Turnstile
The preparation of ruthenium(II) complexes coordinated to a penta(4-halogeno)phenylcyclopentadienyl ligand and to the hydrotris(indazolyl)borate ligand are detailed. Our strategy involves first the coordination of the penta(4-bromo)phenylcyclopentadienyl ligand by reaction with the ruthenium-carbonyl cluster followed by the coordination of the tripodal ligand. The pentabrominated precursor was successfully