Bis triethylphosphine trichlorotitanium III

Bis(triethylphosphine)trichlorotitanium(III) is a gray-green solid that is extremely air-sensitive. Characteristic absorption bands (cm ) in the infrared 

REAGENTS FOR THE SYNTHESIS OF J/-DIENE COMPLEXES OF TRICARBONYLIRON AND TRICARBONYLRUTHENIUM 

Previous syntheses of tricarbonyl( /-diene)iron complexes have relied mainly on the reaction of Fe(CO)s, Fc3(CO)i2, or Fc2(CO)9 with the free diene. The use of the first two carbonyls suffers from the prolonged reflux times and/or ultraviolet irradiation necessary to obtain reaction and the consequent low yields and mixtures of complexes obtained with heat- and ultraviolet-sensitive dienes. The latter reagent, although utilized at lower temperatures, may react with polyenes (n 3) to give mixtures containing, in addition to the expected product, binuclear derivatives containing a metal—metal bond.2 

The only readily available ruthenium carbonyl, Ru3(CO)i2, reacts in a complex manner with many polyolefins to give, in addition to mononuclear derivatives, complexes retaining the Rus cluster and products resulting from hydrogen abstraction.  

Described here is the preparation of (benzylideneacetone )tricarbonyliron-(0) and (l,5-cyclooctadiene)tricarbonyl ruthenium(0). Both compounds func- 

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