Carbonyl complexes, reaction with

EtMe4C5)Mn(CO)3 18 and reaction of the photolytically generated species [(jj5-EtMe4C5)Mn(CO)2 x THF] 19 with (f-Bu)2SiHCl 7 yields the p-biscarbyne complex 20, but also the carbonyl complex 22 with a manganese manganese triple bond (Scheme 3) [12],... 

Reaction of the carbonyl complex 26 with the mercury diazomethane 27 gives the highly reactive 17e intermediate carbyne complex 28 which dimerizes to form the / -biscarbyne complex 30. In this case, the intermediate terminal carbyne complex 28 has been trapped by reaction with the mercury diazomethane 29 to form the cyclic vinylidene complex 31. 31 was also characterized by a single crystal X-ray structure analysis. 

Metal carbonyls undergo reactions with a great many compounds to produce mixed carbonyl complexes. A large number of these reactions involve the replacement of one or more carbonyl groups by a substitution reaction. Such reactions have also been studied kinetically in some cases. 

Before addition of the benzyl halide, the only carbonyl adsorption peak is found at 1900 cm, indicative of the cobalt tetracarbonyl anion. After addition, this band immediately disappears and peaks at 2000 cm l are observed. These most likely represent the corresponding acyl complex. Reaction with methoxide yields the product and regenerates the cobalt anion. In the absence of sufficient methoxide, the reaction requires attack by the much... 

Cobalt carbonyl complexes react with 1,3-diynes to give a variety of complexes in which two molecules of diyne have coupled to form y-cyclobutadiene ligands slightly different conditions result in formation of cluster complexes (see Section VILE.2). In the mixture of complexes obtained from the reaction... 

Anilinocyclophosphazene, 21 72 Anionic carbonyl cluster, reaction with cationic mononuclear complexes, 30 155-158... 

Neutral metal complexes, reaction with carbonyl metallates, 30 152-155 Neutrons... 

The complex Mn2(/x-H)(/x-PPh2)(CO)8 undergoes carbonyl substitution reactions with phosphite, phosphine, or isocyanide ligands, either thermally or... 

Alkynyl(phenyl)iodonium salts can be effectively used in palladium(O) or copper(I) catalyzed coupling or carbonylative coupling reactions with various organozirconium complexes (Scheme 57) [117-119]. 

The reaction of the transition-metal fragments with main group 15 elements directly has proven a very fruitful field for exploration. The methodology has been successful for a wide range of metal complexes. These fall generally into three basic types (1) reactions with cyclopentadienyl metal carbonyls, (2) reactions with homoleptic metal carbonyls and substituted derivatives, and (3) reactions with metal cations in the presence of a multi-dentate chelating ligand. 

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