Hydrogen Isotope Exchange with Iridium(I) Complexes Supported by Phosphine-Imidazolin-2-imine P,N Ligands
作者:Kristof Jess、Volker Derdau、Remo Weck、Jens Atzrodt、Matthias Freytag、Peter G. Jones、Matthias Tamm
DOI:10.1002/adsc.201601291
日期:2017.2.20
phosphine‐imidazolin‐2‐imine RP,NR′ ligands (R=Ph, Cy, i‐Pr, t‐Bu; R′=Me, i‐Pr) were prepared from 1,2‐dibromobenzene by palladium‐catalyzed C–N coupling with 1,3,4,5‐tetramethylimidazolin‐2‐imine or 1,3‐diisopropyl‐4,5‐dimethylimidazolin‐2‐imine, followed by lithiation with tert‐butyllithium and reaction with the chlorophosphines (R2PCl). Their reaction with the dimeric iridium complex [Ir(cod)Cl]2 (cod=1
Synthesis and Reactivity of 16‐Electron Pentamethylcyclopentadienyl–Ruthenium(II) Complexes with Bis(imidazolin‐2‐imine) Ligands
作者:Dejan Petrovic、Thomas Glöge、Thomas Bannenberg、Cristian G. Hrib、Sören Randoll、Peter G. Jones、Matthias Tamm
DOI:10.1002/ejic.200700569
日期:2007.8
of very stable half-sandwich 16-electron ruthenium complexes of the type [(η5-C5Me5)Ru(BLR)]+ (1, R = Me; 2, R = iPr), which even resist coordination of the chloride counterion. Their inertness towards hard, π-basic ligands does not prevent these complexes from displaying high reactivity towards soft σ-donor/π-acceptor ligands such as CO and isocyanides, and the complexes [1·CO]CF3SO3 and [1·CNXy]CF3SO3
制备了 1,2-双(咪唑啉-2-亚氨基)乙烷配体 BLMe 和 BLiPr,其中咪唑鎓部分有效稳定正电荷的能力导致具有强给电子能力的高碱性配体。分离出非常稳定的 [(η5-C5Me5)Ru(BLR)]+ (1, R = Me; 2, R = iPr) 型的半夹心 16 电子钌配合物来说明这一特征,它甚至可以抵抗氯反离子的配位。它们对硬的 π-碱性配体的惰性不会阻止这些配合物对软的 σ-供体/π-受体配体(如 CO 和异氰化物)以及配合物 [1·CO]CF3SO3 和 [1·CNXy]CF3SO3 显示出高反应性(XyNC = 2,6-二甲基苯基异氰) 可以被分离。这些配合物分别在 1886 和 1991 cm-1 处表现出 CO 和 CN 伸缩振动,
作者:Lukas F. B. Wilm、Tobias Eder、Christian Mück-Lichtenfeld、Paul Mehlmann、Marius Wünsche、Florenz Buß、Fabian Dielmann
DOI:10.1039/c8gc02952k
日期:——
Zwitterionic Lewis base adducts between nitrogen bases and CO2 play a pivotal role as transient intermediates in many projects aiming at CO2 capture, storage and utilization. Yet, fundamental questions about the required parameters for the formation of isolable adducts remain and only a single adduct (TBD–CO2) has been characterized unequivocally. Using a combination of NMR spectroscopy, single-crystal
Structural and theoretical investigation of 2-iminoimidazolines ? carbene analogues of iminophosphoranes
作者:Matthias Tamm、Dejan Petrovic、S?ren Randoll、Stephan Beer、Thomas Bannenberg、Peter G. Jones、J?rg Grunenberg
DOI:10.1039/b615418b
日期:——
with trimethylsilyl azide (Me3SiN3) followed by desilylation of the resulting 2-trimethylsilyliminoimidazolines -. The X-ray crystal structures of and have been established, revealing C1-N1-Si1 angles that are more obtuse than the corresponding P-N-Si angles observed in related trimethylsilyl iminophosphoranes. Together with , the disilylated side product 1,3-diisopropyl-2-(trimethylsilylimino)-4-trim