Question

Figure 1. Infrared spectrum of 2-2,4-dinitrobenzyl)pyridine, 4000 3500 3000 2500 2000 Figure 2. Mass Spectrum of 2-(2,4-dinitrobenzylpyridine. Scan 44B (3.434 min), BZPYN42.D 700000 600000 500000 400000 300000 200000 139 154 100000 78 5163 7092100 70 101 117 127 229 242258 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260

I need these answered please

Answer 1

1) The strong band barely above 1500 cm^-1 is a nitro band, as is the band in 1350 cm^-1. The weak bands above 3000 cm^-1 correspond the the C-H bonds in the aromatic rings and those below 3000 cm^-1 to the sp³ carbon-hydrogen bonds in between the rings.

2)

Oh+30N — ON-OH + H

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NO, ao-a -00 I + H+ N NO

NO, ao-as-a N NOM + H+ NO2 H NO2

3- The MW of the compound is 259, so the m/z = 213 peak corresponds to a loss of 46, which is the mass of a nitro group. The peak in 167 corresponds to a loss of 46 from the 213 peak, so it is the loss of the second nitro group.