interpret and explain the nmr spectrum, Macroeconomics

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.

 

Posted Date: 3/22/2013 4:19:25 AM | Location : United States







Related Discussions:- interpret and explain the nmr spectrum, Assignment Help, Ask Question on interpret and explain the nmr spectrum, Get Answer, Expert's Help, interpret and explain the nmr spectrum Discussions

Write discussion on interpret and explain the nmr spectrum
Your posts are moderated
Related Questions
What is the formula for computing for national income in a closed economy with government intervention

Monetary Policy Vs. Fiscal Policy According to monetarists, money is very important in determining the level of aggregate demand and that monetary policy is very potent. In con

Question 1: Critically analyse the costs of inflation. Which of these items is likely to have encouraged many governments in their adoption of inflation as public enemy number

how to maintain equilibrium gdp in foreign trade

Determine the Long-term direct investment flows Long-term direct investment flows are when investors buy physical assets like land or capital equipment in another nation. This

what are its effects on the Indian economy? Ans) It is largely positive. Globalization has brought a lot of jobs and large sums of investment to India. India's economy has been

Foreign exchange risk is the level of uncertainty that a company must handle for changes in foreign exchange rates that will unfavourably affect the money the company receives for

Given the following: Airbus Boeing Demand P = 182.868 - 0.0003Q P = 198.6592 - 0.00013Q TVC Curve TVC = 104.8822Q - 0.001Q^2 + 0.09Q^3 TVC = 25.8678Q - 0.00023Q^2 + 0.4Q^3 In

Subsidy programs are likely to have a number of secondary effects in addition to the direct effect on dairy prices. What impact do you suppose farm subsidies are likely to have on

compute: credit multiplier, maximum change in the money supply