1.1.12.1 31.4.15 1·6·1 7.1 8 9.1. 10.1 11. 12. 1 1BThe following spectra for A and B correspond to two structural isomers with a molecularformula of C.HnN. The NMR singlet at 81.16 in spectrum A disappears when the sample isshaken with Dr0. The singlet at 80.60 ppm in the spectrum of B disappears on shaking withD20. Propose structures for these isomers, and explain how it is consistent with the observedabsorptions.2.1.wavelengih (am)3.5 6100253.544.5$ 9 1012 13 14 1S 16m806040AW204000350030002500IKISIKIwanenumber icm2001801601401206040在%3D HEADINCEffectsimdingHeading 1Colors FontskaedSet as DefaultDocument Formatting* . 1 I2. 1.4.15. 19.1 101:1 12. 1314. I15. 11618%3D%3Dwavelength (um)5.5 68 9 1025354.51112 13 14 15 1610080604020400035003000250020001800160014001200100080060wavenumber (em10ppm

2. The following spectra for A and B correspond to two structural isomers with a molecular formula of C.H,N. The NMR singlet at 81.16 in spectrum A disappears when the sample is shaken with Dr0. The singlet at 80.60 ppm in the spectrum of B disappears on shaking with D20. Propose structures for these isomers, and explain how it is consistent with the observed absorptions. wavelength (pum) 25 100 3.5 4,5 9 10 U 12 13 14 15 16 5.5 6. 80 60 40 20 4000 3500 3000 2500 2000 I800 1400 1000 S00 waverumber icm 200 180 160 140 120 60 40