(a) Preparation of dithiocyanatobis(triphenylphosphine) nickel(II), [Ni(NCS)2(PPh3)2] 1.3335 Weigh nickel nitrate Ni(NO3)2.6 H20 (1.2 g) into a 250 mL conical flask. Add 60 mL of n-butanol and heat on a steam bath in the fume hood until the solid dissolves. Weigh out powdered potassium thiocyanate (2.0 g) and add to the hot nickel nitrate solution, while stirring with a glass rod. Continue heating on the steam bath for 20 mins (go on with part (b)). Most of the KNCS should dissolve and white crystals of KNO3 will precipitate. Filter the hot solution using a Buchner funnel. The green fo filtrate is then a butanol solution of nickel thiocyanate. Heat the filtrate on the steam bath. Weigh triphenylphosphine (2.1 g) into a 100 mL conical flask. Add 20 mL n-butanol and heat on a steam bath until the solid dissolves. Add the hot triphenylphosphine solution to the hot nickel thiocyanate solution, and briefly swirl the contents of the flask. Allow to stand undisturbed in the fume hood while the flask cools and the product crystallises. Filter the product using a Buchner funnel, wash with a small portion of n-butanol and dry by sucking air through the sample. Record the yield. Prod. wh P
(a) Preparation of dithiocyanatobis(triphenylphosphine) nickel(II), [Ni(NCS)2(PPh3)2] 1.3335 Weigh nickel nitrate Ni(NO3)2.6 H20 (1.2 g) into a 250 mL conical flask. Add 60 mL of n-butanol and heat on a steam bath in the fume hood until the solid dissolves. Weigh out powdered potassium thiocyanate (2.0 g) and add to the hot nickel nitrate solution, while stirring with a glass rod. Continue heating on the steam bath for 20 mins (go on with part (b)). Most of the KNCS should dissolve and white crystals of KNO3 will precipitate. Filter the hot solution using a Buchner funnel. The green fo filtrate is then a butanol solution of nickel thiocyanate. Heat the filtrate on the steam bath. Weigh triphenylphosphine (2.1 g) into a 100 mL conical flask. Add 20 mL n-butanol and heat on a steam bath until the solid dissolves. Add the hot triphenylphosphine solution to the hot nickel thiocyanate solution, and briefly swirl the contents of the flask. Allow to stand undisturbed in the fume hood while the flask cools and the product crystallises. Filter the product using a Buchner funnel, wash with a small portion of n-butanol and dry by sucking air through the sample. Record the yield. Prod. wh P
(a) Preparation of dithiocyanatobis(triphenylphosphine) nickel(II), [Ni(NCS)2(PPh3)2] 1.3335 Weigh nickel nitrate Ni(NO3)2.6 H20 (1.2 g) into a 250 mL conical flask. Add 60 mL of n-butanol and heat on a steam bath in the fume hood until the solid dissolves. Weigh out powdered potassium thiocyanate (2.0 g) and add to the hot nickel nitrate solution, while stirring with a glass rod. Continue heating on the steam bath for 20 mins (go on with part (b)). Most of the KNCS should dissolve and white crystals of KNO3 will precipitate. Filter the hot solution using a Buchner funnel. The green fo filtrate is then a butanol solution of nickel thiocyanate. Heat the filtrate on the steam bath. Weigh triphenylphosphine (2.1 g) into a 100 mL conical flask. Add 20 mL n-butanol and heat on a steam bath until the solid dissolves. Add the hot triphenylphosphine solution to the hot nickel thiocyanate solution, and briefly swirl the contents of the flask. Allow to stand undisturbed in the fume hood while the flask cools and the product crystallises. Filter the product using a Buchner funnel, wash with a small portion of n-butanol and dry by sucking air through the sample. Record the yield. Prod. wh P
Can u draw chemical reactions on computer? Use ChemDraw or something ?
I only need the electronic reaction mechanism
Transcribed Image Text:(a) Preparation of dithiocyanatobis(triphenylphosphine) nickel(II), [Ni(NCS)2(PPh3)2]
1.3335
Weigh nickel nitrate Ni(NO3)2.6 H20 (1.2 g) into a 250 mL conical flask. Add 60 mL
of n-butanol and heat on a steam bath in the fume hood until the solid dissolves.
Weigh out powdered potassium thiocyanate (2.0 g) and add to the hot nickel nitrate
solution, while stirring with a glass rod. Continue heating on the steam bath for 20
mins (go on with part (b)). Most of the KNCS should dissolve and white crystals of
KNO3 will precipitate. Filter the hot solution using a Buchner funnel. The green fo
filtrate is then a butanol solution of nickel thiocyanate. Heat the filtrate on the
steam bath.
Weigh triphenylphosphine (2.1 g) into a 100 mL conical flask. Add 20 mL n-butanol
and heat on a steam bath until the solid dissolves. Add the hot triphenylphosphine
solution to the hot nickel thiocyanate solution, and briefly swirl the contents of the
flask. Allow to stand undisturbed in the fume hood while the flask cools and the
product crystallises. Filter the product using a Buchner funnel, wash with a small
portion of n-butanol and dry by sucking air through the sample. Record the yield.
Prod.
wh
P
Definition Definition Transformation of a chemical species into another chemical species. A chemical reaction consists of breaking existing bonds and forming new ones by changing the position of electrons. These reactions are best explained using a chemical equation.
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![(a) Preparation of dithiocyanatobis(triphenylphosphine) nickel(II), [Ni(NCS)2(PPh3)2]
1.3335
Weigh nickel nitrate Ni(NO3)2.6 H20 (1.2 g) into a 250 mL conical flask. Add 60 mL
of n-butanol and heat on a steam bath in the fume hood until the solid dissolves.
Weigh out powdered potassium thiocyanate (2.0 g) and add to the hot nickel nitrate
solution, while stirring with a glass rod. Continue heating on the steam bath for 20
mins (go on with part (b)). Most of the KNCS should dissolve and white crystals of
KNO3 will precipitate. Filter the hot solution using a Buchner funnel. The green fo
filtrate is then a butanol solution of nickel thiocyanate. Heat the filtrate on the
steam bath.
Weigh triphenylphosphine (2.1 g) into a 100 mL conical flask. Add 20 mL n-butanol
and heat on a steam bath until the solid dissolves. Add the hot triphenylphosphine
solution to the hot nickel thiocyanate solution, and briefly swirl the contents of the
flask. Allow to stand undisturbed in the fume hood while the flask cools and the
product crystallises. Filter the product using a Buchner funnel, wash with a small
portion of n-butanol and dry by sucking air through the sample. Record the yield.
Prod.
wh
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