Calculate the number of double bond equivalents, Chemistry

Compound A has the molecular formula C4H8O2. Figure 1 gives the infrared spectra of compound A.

1601_Calculate the number of double-bond equivalents 1.png

Table gives the chemical shifts and multiplicity data of the broad-band decoupled 13 C NMR spectra of compound A. The mass spectrum gives peaks at mass numbers 29, 43 and 88.

Table 13C NMR spectral data for compound A

2075_Calculate the number of double-bond equivalents 2.png

(a) Calculate the number of double-bond equivalents in compound A.

(b) (i) From the infrared spectrum of compound A (Figure 1) use the correlation charts in the S205 Data Book to assign the most likely type of absorption bands (group below 3000 cm-1 and group around 1750 cm-1 ).

(ii) Use the 13 C NMR data provided in Table 1 to explain what information they give about the nature of the carbon atoms in compound A.

(c) (i) Based on your answers for parts (a) and (b) deduce the structure of compound A (giving brief reasoning). Give the systematic name for compound A.

(ii) Assign the peaks obtained by mass spectrometry from your structure of compound A.

Posted Date: 3/6/2013 6:03:03 AM | Location : United States







Related Discussions:- Calculate the number of double bond equivalents, Assignment Help, Ask Question on Calculate the number of double bond equivalents, Get Answer, Expert's Help, Calculate the number of double bond equivalents Discussions

Write discussion on Calculate the number of double bond equivalents
Your posts are moderated
Related Questions

what are the types of Organic reactions and their mechanism

In a design of a tower, water is chilled from T wa = 65°F to T wb = 45°F.  The inlet water is w a = 1000 lb/h.  Calculate the amount of water that evaporates and the mass flow of

Calculate the free energy change of following reaction at298 kelvin H2+I2=2HI if the enthalpy change is 51.8816kj and the entropy change is 166.15j is this reaction thermodyanamica

how is the filtrate prepared in basic radical testing


Please explain the calculations involved in Kjeldahl''s method for estimating nitrogen

Q. Name the three ways in which consumer testing can be done? The three ways by which consumer testing can be done are: inhouse laboratory testing, home testing and institution

What steps should be taken to minimize the risk of spoilage and wastage of the harvested produce during packing and transportation? What factors need to be considered while t