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Treatment of Na2PdCI4 with 3-chloro-2-methyl-1-propene under an atmosphere of CO yields the dimer [(113- C4H7 )PdClb (A). The 1H NMR spectrum of A at 298 K shows 3 signals: a singlet at 0 2.2 and 2 doublets at 2.9 and 3.8 ppm with the relative intensities of the signals being 3:2:2 respectively. Addition of 2 moles of AsPh3 to the dimer A gives complex B (molar ratio As:Pd:CI = 1:1:1). 1H NMR spectrum of B at 195 K displays a singlet at 0 2.1 and 4 doublets at 0 2.7, 3.2, 3.6 and 4.5 with relative intensities 3:1:1:1:1 as well as aromatic protons due to AsPh3. On warming a solution of B the 1H NMR changes to show two singlets at 2.1 and 3.5 with relative intensities 3:4 in addition to resonances due to the aromatic protons.
(a) Give the structures of A and B and describe the bonding between the organic group and the palladium in A.
(b) Interpret and explain the NMR spectrum of A
(c) Interpret and explain the NMR spectrum of B at 195K
(d) Discuss what happens when B is warmed to 323K and how it accounts for the change in the NMR spectrum.
(e) How would you make the organic group in B more susceptible to nucleophilic attack.
Firms such a Moody's and Standard &Poor's study corporations that issue bonds. They publish "ratings" for the bonds- evaluation of the likelihood of default. Suppose these rating c
Kermit is considering purchasing a new computer system. The purchase price is $106,430. Kermit will borrow one-fourth of the purchase price from a bank at 10 percent per year compo
QXd = 14 - (1/2)PX and QXs = (1/4)PX - 1 Instructions: Round your answers to the nearest whole number. a. Determine the equilibrium price and quantity. Show the equilibrium g
The formula for calculating static and dynamic multiplier
What is gross national income per capita The absolute difference in gross national income per capita is 29,828 PPP$ that means UK income per capita is approximately 860% higher
n 2013, approximately 58 percent of the adult population (245 million) was employed, the lowest employment rate in 20 years. If the employment rate increased to the prerecession l
What are three modifications to a polymer that can make it transparent? How will these modifications affect the mechanical properties of the polymer?
Explain the meaning of a production possibilities curve
Consider the utility function u(x1, x2) = x1x2. (a) Graph the indifference curves for utility levels 1 and 2. (They are symmetric hyperbolas Asymptotic to both axes). (b) Graph the
There are very examples of perfect competition. Yet in the study of industrial organization, significant discussion is focused on this type of market. Explain why.
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