interpret and explain the nmr spectrum, Macroeconomics

Assignment Help:

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.

 


Related Discussions:- interpret and explain the nmr spectrum

Statics and dynamics, Statics and Dynamics   Economic models deal with s...

Statics and Dynamics   Economic models deal with stock and flow variables. These variables can be in one of the two states - equilibrium or disequilibrium - at a particular poin

What are the economic reasons for protectionism, Question 1: (a) What ...

Question 1: (a) What are the characteristics of market and command economies? (b) In a number of countries in recent years, there has been a movement towards a greater rel

Illustrate aspect depends on producers and consumers surplus, Illustrate th...

Illustrate the aspect depends onto producers and consumers surplus. a. How much advantage do producers and consumers receive by the existence of a market? b. How is the welf

Relate overnight rate with money supply, Relate overnight rate with money s...

Relate overnight rate with money supply When the overnight interest rate decreases, the money supply increases When the overnight interest rate increases, the money supply d

Analyse manipulating monetary policy, Buckley (2009) writes that the UK was...

Buckley (2009) writes that the UK was in recession for several short periods during this time, which placed further emphasis on researchingrelationships between the price of oil an

What is the total cost of producing output, What is the total cost of produ...

What is the total cost of producing output? The total cost of producing a specified quantity of output is the total of the fixed cost along with the variable cost of producing

Geometric gradient series, Determine the present worth of a geometric gradi...

Determine the present worth of a geometric gradient series with a cash flow of $50,000 in year 1 and increases of 6% each year through year 8. The interest rate is 10% per year.

Calculate private market equilibrium, Consider the following Marginal Priva...

Consider the following Marginal Private Cost (MPC), Marginal Social Cost (MSC) and market demand curves. These curves relate to a market for a product, the production of which gene

Illustrate the problem for economic performance, Illustrate the problem for...

Illustrate the problem for UK economic performance This is a foremost problem for UK economic performance and helps elucidate the persistent deficit on the current account of

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd