scholarly journals Control of axial chirality in absence of transition metals based on arynes

2017 ◽  
Vol 20 (6) ◽  
pp. 682-692 ◽  
Author(s):  
Frédéric R. Leroux ◽  
Armen Panossian ◽  
David Augros
Keyword(s):  
Transition Metals ◽  
Axial Chirality

Axial Chirality in Square-Planar Metal Complexes

1998 ◽  
Vol 53 (9) ◽  
pp. 1035-1038 ◽  
Author(s):  
Dieter Enders ◽  
Heike Gielen ◽  
Klaus Breuer
Keyword(s):  
Transition Metals ◽  
Metal Complexes ◽  
Axial Chirality ◽  
Late Transition Metals ◽  
Nucleophilic Carbenes ◽  
Square Planar ◽  
Late Transition ◽  
Planar Ligands

Metal complexes with a square-planar arrangement of ligands are frequently found for the late Transition Metals. The incorporation of C1-symmetrical planar ligands (e.g. nucleophilic carbenes) in an orientation perpendicular to the square-plane of the complex leads to various isomers which are characterized by means of an axis of chirality employing the well established Cahn-Ingold-Prelog -R/S-nomenclature.

Precipitation in silicon: Microanalysis

1988 ◽  
Vol 46 ◽  
pp. 474-475
Author(s):  
R.W. Carpenter
Keyword(s):  
Transition Metals ◽  
Spatial Resolution ◽  
Thin Foil ◽  
Precipitation Reaction ◽  
High Current ◽  
Reaction Products ◽  
Carbon And Nitrogen ◽  
Dielectric Layers ◽  
Precipitation Processes ◽  
Areas Of Interest

Interest in precipitation processes in silicon appears to be centered on transition metals (for intrinsic and extrinsic gettering), and oxygen and carbon in thermally aged materials, and on oxygen, carbon, and nitrogen in ion implanted materials to form buried dielectric layers. A steadily increasing number of applications of microanalysis to these problems are appearing. but still far less than the number of imaging/diffraction investigations. Microanalysis applications appear to be paced by instrumentation development. The precipitation reaction products are small and the presence of carbon is often an important consideration. Small high current probes are important and cryogenic specimen holders are required for consistent suppression of contamination buildup on specimen areas of interest. Focussed probes useful for microanalysis should be in the range of 0.1 to 1nA, and estimates of spatial resolution to be expected for thin foil specimens can be made from the curves shown in Fig. 1.

MAGNETIC STUDIES OF Clb-COMPOUNDS OF TRANSITION METALS

1971 ◽  
Vol 32 (C1) ◽  
pp. C1-74-C1-75 ◽  
Author(s):  
K. ENDO ◽  
Y. FUJITA ◽  
R. KIMURA ◽  
T. OHOYAMA ◽  
M. TERADA
Keyword(s):  
Transition Metals ◽  
Magnetic Studies
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