Rhenium complexes aryl isocyanides

The lability of the N2 ligand towards alkyl and aryl isocyanides has been demonstrated by equation (2) which occurs readily with both alkyl and aryl isocyanides.40 The resulting complexes are electron rich , the alkyl isocyanide derivatives ReCl(CNR)(dppe) (R = Me or Bul) undergoing electrophilic attack upon treatment with HBF4 to form the carbyne complexes trcms-[ReCl(CNHR)(dppe)2]BF4.41 Other noteworthy features of the series of complexes ReCl(CNR)(dppe)2 and ReCl(CNAr)(dppe)2, are the low value of v(CN), the presence of a bent M—CNR coordination mode, and their ease of oxidation (as measured by cyclic voltammetry) to the corresponding rhenium(II) monocations.40... 

When the reactions between various aryl isocyanides ArNC and (Bu4N)2Re2Cl8 are carrried out in methanol at room temperature, then rhenium(III)-containing complexes of the types [Re(C-NAr)6]+[ReCl4(CNAr)2] and ReCl3(CNAr)3 can be isolated.21 These compounds display well-defined electrochemistry (cyclic voltammetry) in 0.2 M (Bu4 N)PF6-CH2Cl2, the mononuclear Re111... 

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... 

Since the organometallic chemistry of rhenium is surveyed in the companion series Comprehensive Organometallic Chemistry,6 every effort has been made to minimize overlap with these topics, although an occasional reference is made in the present review to certain alkyl, aryl, carbonyl and isocyanide complexes that may be covered more fully in the excellent review by Boag and Kaesz.6... 

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