第三章_核磁共振波谱法习题集及答?- 百度文库 ر

6. 5

ͬһųǿ, 13C1Hܼ֮(?E)֮Ϊ? (?H=2.793˴,?C=0.702˴) 7. 5

1H2.4 T ų, ˴ŹƵΪ1.0108MHz.14N(I=1)ڴ²˴Ź, ƵΪ? (1HĴž?H Ϊ2.793˴,14NĴž?C Ϊ0.404˴)

8. 5 (3378)

90MHzƵʱ, TMSͻij֮ƵʲΪ430Hz, յĻѧλǶ? 9. 5

1Hž?HΪ1.4110-12J/T, 2.4Tų²˴Ź,յĵŷƵǶ? 10. 10

60MHz(1.409T)ĺ˴Ź, ɨƵʽ, AӺBӵĹƵʷֱTMS360Hz͵120Hz.

(1) ڵӵ, Aܵʵʳǿ(Чǿ)BӸ߻ǵ? ? (2) Ϊ涨TMSγΪ, ABγΪ? 11. 5

13C˵ĴȦãž?C0.7023˴ӣ1˴ӣ5.0510-27JT1h=6.6310-34Js 12. 5

13CųУųǿΪ2.3487T25.10MHzƵ䣬˴Źźţ

13

Cĺ˴žΪٺ˴ӣ1˴ӵλ5.0510-27JT1 h=6.6310-34Js 13. 5

ijбϵӻѧλֵ ģ7.4ʹ õNMRΪ90MHz 1ӾTMSľ롣

2ûһǼ׻ͬ²ӷTMSľΪ171 ѧλ? 14. 5

1H14N27Al75AsͬǿȵųУܼEɴС˳ʲôΪʲôH1/2N1Al=5/2, As=3/2˴ž?λ:˴ӣ?H2.793?N0.4073?Al=3.6385 ?As=1.4349 15. 10

ųǿΪ2.34T1HĹƵΪ٣ʹôųǿΪ2.34Tⶨ13CNMR ʱƵΪ25.1MHzʹ80MHzⶨ13Cף乲ƵǶ٣

?H2.793˴ӣ1˴ӣ5.0510-27JT1h=6.6310-34Js 16. 10

13C1.4092TĴųУ15.08MHzƵòⶨ13CNMR ף 60MHzƵⶨ13CNMR ףųǿΪ60MHzƵⶨ 19FNMRʴųǿΪ󣿣?C0.7023˴ӣ?F2.628613C19FΪ1/2 17. 2

43Ca?7/2ųжٸ̬mΪ ٣ 18. 2

ʹ200MHzNMRijеӻѧλֵΪ6.8Լ300MHz NMRͬһӲźλΪHz 19. 5

ųǿΪ1.4092Tܼ֮ͬ1H13Cܼ ֮Ϊ٣

?H2.793˴ӣ?C0.7023˴ӣ1˴ӣ5.0510-27JT1 20. 5

ͬһųǿ1H14Nܼ֮Ϊ٣ ?H2.793˴ӣ?N0.4073˴ӣ?H=1/2,?N=1

ġʴ ( 80) 1. 5

C4H8Br2 ĺ˴Ź׷£ ?1 = 1.7 ˫ ?2 = 2.3 , ط ?3 = 3.5 ط ?4 = 4.3 ط

ַΪ 3 : 2 : 2 : 1 .

дûĽṹʽ 1234 Ӧ̼ԭ, ͡ 2. 5

1,1,2- ĵͷֱ˴Ź?1= 3.95 ?2 5.77 壨1, 2

(1) ԹΪ٣

(2) ø߷ֱõĺ˴Ź׽ּ壿λںδ 3. 5

ﻷ ĺ˴ŹͼУΪ٣ 4. 10

ijѧʽΪ C3H3Cl5 Ļ NMR ͼ£дĽṹʽָ ͼӦӷĹͼ

5. 5

HOCH2CH2CN סָźŵĹżѷͼͼ

6. 5

CH3- CH2- O - CHCl - CH3ףָźŵĹżѷͼ(ͼ)

7. 5 HFC ˵ĺ˴žطֱΪ 2.792.630.70,ڴųǿͬĴųʱһִź˵ĹƵΪʲô 8. 5

˴Ź׵Ļѧλģ 9. 5

ж» NMR ͼף

CH3CHCH3

10. 5

жлĺ˴Źͼף

BrCHCH2BrCCH2Br3

11. 5

HAHmHx ֱ𻭳

CCC Am x ӵѷͼ.

12. 5

˵˴Ź? 13. 5

C9H10O21Hͼ: (1) 3

(2) a. ?=1.98 3 дĽṹʽ, . b. ?=5.00 2

c. ?=7.29 5 14. 5

C7H8O 1H-NMRͼ: (1)

(2) a. ? =3.8, , 1 дṹʽ, . b. ?=4.6, , 2 c. ?=7.2 5 15. 5

OHCCH2CH3CH3 ˳-ϩ

HCCOO 1H-NMRͼ, ˵

COCH2 (1) м

(2) ѧλֵС(߳, ͳ) (3) ѷͼ (4) ֮ 16. 5

C3H6O21H-NMRͼ (1) 3 (2) a. ?=1.2 ط b. ?=2.4 ط c. ?=10.2

(3) ֮ a:b:c =3:2:1 дĽṹʽ, ԭ. 17. 5

C7H81H-NMRͼ:

a. ?=2.3 b. ?=7.2

֮ a:b =3:5 дĽṹʽ 18. 5

жϻ=CH21H-NMRͼ, дĻѧλƴС (ߡͳ), ѷͼ֮ . 19. 5

жȩCH3CHO1H-NMRͼ, ˵ĻѧλƴС(ߡͳ), ѷͼ֮ . 20. 5

13C-NMR1H-NMR׷Ƚ, ԲⶨлṹЩŵ? 21. 5

C11H16 1H-NMRͼ: (1) 3

(2) a. ?=0.9, , 9 b. ?=2.3, , 2