scholarly journals Cooperative C-H Activation of Pyridine by PBP Complexes of Rh and Ir Can Lead to Bridging 2-Pyridyls with Different Connectivity to the B-M Unit

2021 ◽  
Author(s):  
Yihan Cao ◽  
Wei-Chun Shih ◽  
Nattamai Bhuvanesh ◽  
Jia Zhou ◽  
Oleg V Ozerov
Keyword(s):  
Transition Metal ◽  
Pincer Ligand

Pyridine and quinoline undergo selective C-H activation in the 2-position with Rh and Ir complexes of a boryl/bis(phosphine) PBP pincer ligand, resulting in a 2-pyridyl bridging the transition metal and...

Practical Synthesis of a PCP-Type Pincer Ligand and Its Metal Complexes­

Synthesis ◽  
2017 ◽  
Vol 50 (05) ◽  
pp. 1015-1019 ◽  
Author(s):  
Kazutaka Matoba ◽  
Yoshiaki Nishibayashi ◽  
Aya Eizawa ◽  
Shunsuke Nishimura ◽  
Kazuya Arashiba ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Large Scale ◽  
Crystal Structure Analysis ◽  
Synthetic Method ◽  
Pincer Ligand ◽  
X Ray ◽  
Practical Synthesis

A synthetic method for N-heterocyclic carbene- and phosphine-based PCP-type pincer ligand is described on a large scale. Some transition-metal complexes bearing the PCP-type pincer ligand are prepared and characterized by X-ray crystal structure analysis.

scholarly journals Isolation of a potassium bis(1,2,3-triazol-5-ylidene)carbazolide: a stabilizing pincer ligand for reactive late transition metal complexes

2014 ◽  
Vol 50 (19) ◽  
pp. 2431 ◽  
Author(s):  
Daniela I. Bezuidenhout ◽  
George Kleinhans ◽  
Gregorio Guisado-Barrios ◽  
David C. Liles ◽  
Gaël Ung ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Late Transition Metal ◽  
Pincer Ligand ◽  
Late Transition

Structural snapshots of the rearrangement of the bis(di-tert-butyl-aminophenyl)amine pincer ligand in the presence of transition metal ions

2018 ◽  
Vol 47 (33) ◽  
pp. 11303-11307 ◽  
Author(s):  
N. Leconte ◽  
B. Baptiste ◽  
C. Philouze ◽  
F. Thomas
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Transition Metal Ions ◽  
Pincer Ligand ◽  
Tert Butyl ◽  
Redox Active ◽  
Active Transition

The ligand undergoes N–N and C–N bond formations in the presence of redox-active transition metal ions, in air and coordinating solvents.

A novel bis-1,2,4-benzothiadiazine pincer ligand: synthesis, characterization and first row transition metal complexes

2018 ◽  
Vol 47 (44) ◽  
pp. 15725-15736 ◽  
Author(s):  
Konstantina Pringouri ◽  
Muhammad U. Anwar ◽  
Liz Mansour ◽  
Nathan Doupnik ◽  
Yassine Beldjoudi ◽  
...  
Keyword(s):  
Coordination Chemistry ◽  
Transition Metal ◽  
Transition Metals ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Pincer Ligand ◽  
Ligand Synthesis

The synthesis and coordination chemistry of ligand LH2 to first row transition metals is described in which it acts as a tridentate N,N′,N′′-donor.

HREM Study of electron-induced surface radiation damage in ReO3

1991 ◽  
Vol 49 ◽  
pp. 636-637
Author(s):  
R. Ai ◽  
H.-J. Fan ◽  
L. D. Marks
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Metal Oxides ◽  
Electron Irradiation ◽  
Transition Metal Oxides ◽  
Carbon Film ◽  
Transition Metal Ions ◽  
Surface Radiation ◽  
Valence Transition ◽  
Electron Microscopes

It has been known for a long time that electron irradiation induces damage in maximal valence transition metal oxides such as TiO2, V2O5, and WO3, of which transition metal ions have an empty d-shell. This type of damage is excited by electronic transition and can be explained by the Knoteck-Feibelman mechanism (K-F mechanism). Although the K-F mechanism predicts that no damage should occur in transition metal oxides of which the transition metal ions have a partially filled d-shell, namely submaximal valence transition metal oxides, our recent study on ReO3 shows that submaximal valence transition metal oxides undergo damage during electron irradiation.ReO3 has a nearly cubic structure and contains a single unit in its cell: a = 3.73 Å, and α = 89°34'. TEM specimens were prepared by depositing dry powders onto a holey carbon film supported on a copper grid. Specimens were examined in Hitachi H-9000 and UHV H-9000 electron microscopes both operated at 300 keV accelerating voltage. The electron beam flux was maintained at about 10 A/cm2 during the observation.

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