Early transition metals are defined as elements belonging to groups III-V, the lanthanides, and the actinides; the reactivity of complexes featuring the metal in its highest oxidation state (d0fn electron count) and a carbon-based ligand will be described....
Reactions of cyclopentadienyl iron 2-alkynyl and allyl complexes with ketenes or ketene precursors yield transition-metal substituted cyclopentenones in some cases and new transition-metal substituted allyl complexes in others. The transition metals can subsequently be cleaved from the cyclopentenone ...
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In the reactions of Grignard reagents and n -butyllithium the presence of transition metals and complexing solvents facilitates the formation of anion radicals. High radical concentrations, observable for some days at laboratory temperature, and very well resolved e.s.r. spectra of the following ...
While the main-group metals, especially magnesium and lithium, were the first metals to have a prominent role in organic synthesis, several of the transition metals have also become very important. In this chapter, we will discuss the reactions of transition metal compounds and intermediates that ...
Reactions involving transition metals : XIX. Some reactions of perfluoronorbornadiene with low valent transition metal complexes Perfluoronorbornadiene reacts with the compounds [M(PPh3)4] (M = Pt, Pd) and [IrCl(CO)(PMePh2)2] to give the adducts [(C7F8)M(PPh3)2] and [(C7F8)IrCl(CO...
Reactions of d-group transition metals including Ti, V, Nb and Ta with N2 gas were investigated at target temperature of 2000C under heating with concentrated solar beam at PROMES-CNRS in Odeillo (France). In the typical experimental setup using graphite crucible as the sample holder, synthesis...
Transition metals represent very interesting materials in which one can fairly readily analyze trends in their properties along the transition series. Although there have been recent calculations of their bulk and surface properties in the local-density approximation, our discussion here will be mainly ...
Chemistry of transition metals. III. Reactions of some alkyl dichlorides with titanium1,2- and 1,3-Dichloropropane react with clean titanium at ambient temperature to yield propylene, and a mixture of propylene (10%) and cyclopropane (90%), respectively. The surface is poisoned by adsorbed ...