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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.
What happened to the credit standards (e.g., minimum down payment, mortgage loan relative to the value of the house, and creditworthiness of the borrower) between 1995 and 2005? Wh
Q. Relationship between L and P? • As long as L is smaller than LB, L may change with no change in prices. In this range, there is no relation between L andP. • When L is betw
c=100+0.8yd
Q. Determination of GDP in the cross model? In the cross model, GDP is determined as the solution to the equation Y D (Y) = Y We may explain
A radiology firm charges $2,000 per exam. Uninsured patients are expected to pay list price. How much do they pay?
Function given: Qt=A0Lt^6Kt^4, Lt=L0e^.03t, Kt=K0e^.02t 1. Growth of labor is continuously compounded at 3% 2. Growth of Capital is continuously compounded at 2% Solve:
Define elasticity of supply. What factors influence Elasticity of Supply? There is only one type of identifiable elasticity of supply measuring the responsiveness of market sup
You are the mayor of a beautiful city by the ocean, and your city is connected to the mainland by a set of k bridges. Your city manager tells you that it is necessary to come up wi
A scientist postulates that grazing by gastropod snails affects the settlement of Spirorbid worms in estuaries. She sets up a manipulative experiment to test this by using cages to
objective of the study
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