Pentacarbonyl tetrafluoroborato rhenium I

See General Remarks for this chapter for the preparation and handling of tetrafluoroborato complexes. 

The reagents may be purchased as indicated Tetrafluoroboric acid from Merck [Ph3C][BF4] from Fluka. 

for C5BF 05Re(MW 413.0) C, 14.54. Found C, 14.17. Properties 

Ionic complexes are formed under mild conditions with various soft and hard neutral donor molecules  

The complex Re(CO)j(FBF3) also reacts with 2-butyne or 2-pentyne via cyclodimerization of the alkyne to give complexes with a coordinated methylenecyclobutene derivative.  

The compound Re(CO)5(FBF3) is soluble in water to give a solution of [Re(CO)5(OH2)]+. A series of water insoluble neutral pentacarbonylrhenium derivatives has been obtained from aqueous solutions of pentacarbonyl-(tetrafluoroborato)rhenium and various salts12  

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BF4O4WC11H11, Tungsten(l +), (acetone)-tricarbonyl(n -cyclopentadienyl)-, tetrafluoroborate( 1 -), 26 105 BF405ReCs, Rhenium, pentacarbonyl-(tetrafluoroborato(i -)]-, 26 108 BF405ReC7H4, Rbenium(l + ), pentacar-bonyl(ii -ethene)-, tetrafluorobor-ate(l-), 26 110... 

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