(b) Preparation of dibromobis(triphenylphosphine)nickel(II), [NiBr2(PPh3)2] 1.01 Weigh 1.0 g of nickel bromide NiBr2-3H20 into a dry 100 mL conical flask. Add 20 cm³ of n-butanol and heat on a steam bath in the fume hood, occasionally swirling or stirring with a glass rod until the solid dissolves. Weigh 2.0 g of triphenylphosphine (PPh3) into a 100 mL conical flask, add 20 mL of n-butanol and heat on the steam bath until the solid dissolves. Add the hot triphenylphosphine solution to the hot nickel bromide solution, swirl briefly then heat on a steam bath to concentrate the solution. The pale green solution should darken as the NiBr2 is converted to [NiBr2(PPh3)2]. Keep the reaction on the steam bath until dark green crystals of [NiBr2(PPh3)2] begin to appear. crystallization has been induced, cool the mixture in an ice bath. Once Isolate the product by filtration using a Buchner funnel. Wash the product with a small volume of n-butanol and dry by sucking air through the sample. Record the yield. rod (.09 FANILIC

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