Electrochemical and density functional theory study of bis(cyclopentadienyl) mono(β-diketonato) titanium(IV) cationic complexes
作者:Annemarie Kuhn、Jeanet Conradie
DOI:10.1016/j.electacta.2010.08.086
日期:2010.12
The electrochemical behaviour of fluorinated bis(cyclopentadienyl) mono(β-diketonato) titanium(IV) complexes, of general formula [Cp2Ti(R′COCHCOR)]+ClO4− with Cp = cyclopentadienyl and R′, R = CF3, C4H3S; CF3, C4H3O; CF3, Ph (C6H5); CF3, CH3; CH3, CH3; Ph, Ph and Ph, CH3 is described. Both metal and ligand based redox processes are observed. The chemically and electrochemically reversible TiIV/TiIII
氟化双(环戊二烯基)单(β-二酮盐)钛(IV)配合物,通式[Cp的的电化学行为2的Ti(R'COCHCOR)] + CLO 4 -再用Cp =环戊二烯基和R',R = CF 3,C 4 H 3 S;CF 3,C 4 H 3 O;CF 3,Ph(C 6 H 5);CF 3,CH 3 ; CH 3,CH 3 ; Ph,Ph和Ph CH 3描述。观察到基于金属和配体的氧化还原过程。在化学和电化学上可逆的Ti IV / Ti III对,然后在相当大的负(阴极)电势下发生不可逆的配体还原。在其自由和螯合状态配体减少的比较表明,β-二酮盐配体(R'COCHCOR)-中的[Cp 2的Ti(R'COCHCOR)] + CLO 4 -为更负的电势的电活性。理论密度泛函理论(DFT)研究表明,高度集中的以金属为中心的前沿轨道主导着Ti IV / Ti III氧化还原化学导致正式氧化还原电位(之间的非线性关系ë
Synthesis, Structure, and Optical and Redox Properties of Chlorophyll Derivatives Directly Coordinating Ruthenium Bisbipyridine at the Peripheral β-Diketonate Moiety
from the Ru complex was observed around 500 nm, in addition to visible absorption bands from the chlorophyll moiety. Chlorophyll derivatives 3–5 and 3-Zn directly coordinating the rutheniumcomplex were less fluorescent in dichloromethane than chlorophyll–diketonate ligands 1, 2, and 1-Zn due to the heavy atom effect of the ruthenium in a molecule. The coordination to the rutheniumcomplex moiety at
[EN] CERIUM (IV) COMPLEXES AND THEIR USE IN ORGANIC ELECTRONICS<br/>[FR] COMPLEXES DE CÉRIUM (IV) ET LEUR UTILISATION DANS L'ÉLECTRONIQUE ORGANIQUE
申请人:UNIV DRESDEN TECH
公开号:WO2021048044A1
公开(公告)日:2021-03-18
The present invention relates to an electronic component comprising a cerium IV complex, a doped semi-conductor matrix material comprising the cerium IV complex and at least one electron donor, the use of the cerium IV complex, especially as an organic semi-conductor, as a dopant in organic semiconductor matrix materials and as a charge injector in a charge injection layer, and new cerium IV complexes.
Novel heteroligated titanium complexes with fluorinated salicylaldiminato and β-enaminoketonato ligands: synthesis, characterization and catalytic behavior in vinyl addition polymerization of norbornene
作者:Ying-Yun Long、Wei-Ping Ye、Ping Tao、Yue-Sheng Li
DOI:10.1039/c0dt01225d
日期:——
The X-ray crystallographic analysis indicated these complexes adopted a distorted octahedral geometry around the titanium center. Upon activation with modified methylaluminoxane, complexes 3a–g exhibited moderate to good catalytic activity for norbornene (NB) vinyl addition polymerization, producing moderate molecular weight polynorbornenes under mild conditions. The introduction of electron-withdrawing
一系列通式为[3-Bu t -2-OC 6 H 3 CH N(C 6 F 5)] [PhN C(CF 3)CHC(R)的杂合的(水杨基亚氨基)(β-烯氨基酮基)钛配合物O] TiCl 2(3a:R Ph,3b:R C 6 H 4 Ph(p),3c:R C 6 H 4 Ph(o),3d:R = 1-萘基,3e:R = C 6 H 4 F 2(2,6),3f:R = C 6 H 4 Cl 2(2,5),3g:R C 6 F 4(2,3,5,6)OMe(4)。配合物3d,3f–g的结构通过单晶X射线衍射分析确定。X射线晶体学分析表明这些络合物在钛中心周围采用了扭曲的八面体几何形状。经修饰的甲基铝氧烷活化后,配合物3a–g表现出中等至良好的催化活性。降冰片烯(NB)乙烯基加成聚合反应,在温和条件下产生中等分子量的聚降冰片烯。吸电子基团的引入可以大大提高催化活性。重要的是,杂化的钛配合物与同等的对应
Structure, substitution and hydrolysis of Bis(trifluorobenzoylacetonato-O,O′)dichloro titanium(IV): An experimental and computational study
作者:Annemarie Kuhn、Sonja Tischlik、Kathrin H. Hopmann、Marilé Landman、Petrus H. van Rooyen、Jeanet Conradie
DOI:10.1016/j.ica.2016.08.034
日期:2016.11
This work has received support from the South African National Research Foundation (JC, ML), the Central Research Fund of the University of the Free State (JC) and the University of Pretoria (ML), and the Research Council of Norway through a Centre of Excellence Grant (Grant No. 179568/V30, KH) and a FRIPRO grant (Grant No. 23170/F20, KH). Grants of computer time from the Norwegian supercomputing program