Please answer all below for the compound BUTANE What is the name and structure o

Question

Please answer all below for the compound BUTANE

What is the name and structure of your compound? What is the major function group in your compound (Hint: Look at the ending of the name of your compound for a hint). List all of the other functional groups present in your compound. What is the HDI (Hydrogen Deficiency Index) for your compound? How many sets of non-equivalent protons are present in your compound? What would be the multiplicity of each set of non-equivalent protons in your compound (singlet, doublet, etc.)? How many peaks would you predict would appear in the Carbon-13 NMR spectrum? Which carbon atom in your compound would you predict would be the farthest downfield in your C-13 Spectrum? Pick at least two functional groups present in your compound and describe where they would appear in the IR spectrum of this compound. What would be the m/z value for the molecular ion peak of your compound?

Explanation / Answer

a)

Name --> butane

b)

structure CH3-CH2-CH2-CH3

C4H10

c)

major funcitonal group --> ALKANE

d)

What is the HDI (Hydrogen Deficiency Index) for your compound?

IHD = (2x + 2-y)/2

C4H10; x = 4, y = 10

then

IHD = (2*4+2-10)/2 = 0

clearly zero, since it is an alkane, i.e. it is a saturated hydrocarbon

e)

How many sets of non-equivalent protons are present in your compound? What would be the multiplicity of each set of non-equivalent protons in your compound (singlet, doublet, etc.)?

CH3-CH2-CH2-CH3

there are only 2 types of protons/hdyrogens

those bonded to CH3, and thos bonded to CH2

the values

CH2 = 1.29 (doublet); CH3 = 0.89 (triplet)

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