Question

HRMN, CRMN and IV spectra analysis of

3-nitrobenzoic acid. What is the most important information that this three spectra could give us?

PPM Int. Assign. 170.17 148.50 135.81 130.97 129.95 128.39 125.30 494 539 989 427 1000 978 865 waa 160 140 120 200 180 CDS-19-751 100 pom Figura 17 - Espetro de IC RMN em CDCl do ácido 3-nitrobenzoico (sdbs, 5974]

Answer 1

Answer - No 3 nitro benzoic cecid BRMN specious.capy Bc mass spectroscopy gives information about how many types. g carbon atom should present en compound. In 3 nitrobenzoic acid f foron graph et B clear that of having 7 types of carbon atom, Fablessing data/ peak present. In spectrum 1 Thor carbon peak áppear at Sharp to ppm. It's value slightly deshielded' because e attracting effect q bennene ring 2 m carbon haring nitro (Na) gorrup shows peak at 150 ppm. It is also deshielded due é attracting No group. 3) orthop) carbon bet? -coot & No₂ grup peak appears at 8. bet 135 to 140 ppm 4 Remaining all carbon atoms a benzine sing (1,4,5,6) appears bed 120 to 130 ppm. . It also gives the information about ali total os number of carbon atom.

* H NMR LOH 3 nikio benzod and 1 H NMR gives Information about the number a types of hydrogen atom / peak present in Bompound a) The value at 11 ppm as due to hoch group 8 All the benzene hydrogen share aromatic peak bet? Y to g porn. The values deshielded because é attracting Me and -cool grup toplete (24) I LoHo II ppro s(24) gyping bet tog (2h) ppm NO * IR spectroscope It gives the information about What type of functional group present in compound. Lory JR sbeching frequenos present s 1 Peak at 1550 anos due to No, goup af Peak at 1600 cm B due to onmate 3 riho benzer ca aud 3) The peak at 1700 con B due carbonyl group of carboxophr aud (-2004) 4 Peak at too to to cn is due to m subsbluted benzene ring en