Rhenium complexes nitriles

Raman spectroscopy metal in water complexes, 309 Rare earth complexes acetylacetone synthesis, 377 guanidinium, 282 hydroxamic acids, 506 Redox properties bipyridyl metal complexes, 90 Reductive coupling nitrile metal complexes, 265 Resorcinol, 2,4-dinitro-metal complexes, 273 Rhenium complexes acetylacetone, 376 synthesis, 375, 378... 

Nitriles are resistant to hydrometallation by transition metal hydride complexes. The complex Cp2ZrHCl reacts with nitriles A rhenium complex bridged by adinuc-lear hydride undergoes insertion with several isonitriles and with acetonitrile. The product in the case of the isonitrile results from a 1,1-inertion (see 11.2.8) ... 

Rajesh K, Dudle B, Blacque O, Berke H (2011) Homogeneous hydrogenations of nitriles catalyzed by rhenium complexes. Adv Synth Catal 353 1479-1484... 

A major group of rhenium(II) complexes is characterized by two chelating bis-phosphines forming the equatorial plane of a distorted octahedron (263). The axial ligands can be varied and representatives with halides, pseudohalides, thiolates, and nitriles have been studied extensively. 

As with their trans isomers, treatment of the nitrile complexes cw-[ReCl(NCR)(dppe)2] (R = aryl) with [Et20H][BF4] or TMSCF3SO3 in CH2CI2 leads to the formation of the methylenamide compounds cA-[ReCl NC(E)R (dppe)2] (E = H, TMS) and tra x-[ReCl(NCHR)-(dppe)2]. The products undergo deprotonation by bases such as [NBu4]OH to form the trans isomers of the corresponding nitrile complexes [ReCl(NCR)(dppe)2]. Reactions of cis-[ReCl(NCR)(dppe)2] complexes with [Et30][PFg] result in oxidation and isomerization to afford the rhenium(II) complexes tra 5-[ReCl(NCR)(dppe)2][PF6]. ... 

These expressions have been applied to the series isocyanide and carbonyl complexes of rhenium(I) tr ns-[ReL2(dppe)2]" (L = CNR, CO) [19, 20] and of nitrile and carbonyl compounds of iron(II) tmns-[FeL2(depe)2]2+ (L = NCR, CO) [35], and the Es and /J values of the corresponding trons- ReL(dppe)2 " and trans- FeL(depe)2 " " centers, which are given in Table 9, have been discussed earlier. 

Primary amines at a primary carbon can be dehydrogenated to nitriles. The reaction has been carried out with a variety of reagents, among others, IF5,"9 lead tetraacetate, 20 nickel peroxide,121 NaOCl in micelles,122 S g-NiSO, 2-1 and CuCl-02-pyridine.124 Several methods have been reported for the dehydrogenation of secondary amines to imines.125 Among them126 are treatment with(l) iodosylbenzene PhIO alone or in the presence of a ruthenium complex, 27 (2) Me2SO and oxalyl chloride, 2" and (3) f-BuOOH and a rhenium catalyst. 29... 

The most important nitrile compound of Re is ReCl3(NCMe)(PPh3)2, a complex which finds much use as a starting material for the synthesis of other Re complexes and some derivatives of Re. This complex and others of its kind are discussed in Section 43.5.1.6. Other complexes that contain a single nitrile ligand, e.g. [ReOBr4(NCMe)] and [ReBr4(NO)(NCMe)] , are most conveniently considered in other sections, i.e. Rhenium(V) Complexes (Section 43.7) and Nitrosyls (Section 43.10), respectively, for the two examples cited here. 

Rhenium(III) complexes, 143-164 cyanides, 143 alkyl isocyanides, 143 amides, 144 amidines, 146 amines, 144 arsines, 147 aryl isocyanides, 143 cyanates, 145 diazines, 144 diethyidicarbamato, 150 P-diketones, 149 dinitrogen, 144 N heterocycles, 144 nitriles, 146... 

Within the course of our studies on the activation (towards protonation) of small unsaturated species by electron-rich metal sites [7], we have observed that the complexes cis-[ReCl(NCR)(dppe)7] are susceptible to proton attack at either the nitrile ligand or the rhenium atom (eq. 1) to give the methyleneamido [8] or the hydrido [9] complexes [ReCl(NCHR) (dppe)2] or [ReClH(NCR) (dppe) 2] (J ) j respectively, and now we report the preliminary investigation of the electrochemical behaviour of the latter compounds, undertaken by controlled potential electrolysis and cyclic voltammetry. 

Espinal Viguri M, Huertos MA, Perez J, Riera L. Imidazole-nitrile or imidazole-isonitrile C—C coupling on rhenium tricarbonyl complexes. Chem Eur J. 

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