THE BREAKING OF BONDS-HOMOLYTIC AND HETEROLYTIC CLEAVAGE

Using the curved-arrow notation, show the formation of reactive intermediates when the following convalent bonds undergo heterolytic cleavage : (a) CH_3 - S - CH_3 (b) CH_3 - CN ( c) CH_3 - Cu .

Types Breaking OF Covalent Bond and Types OF Reaction Intermediate

Describe heterolytic (polar) bond cleavage of : (i) Agl , (ii) H_3 overset (oplus)N overset (Ө)B F_3 , (iii) [Cu (OH_2)_4]^(2 oplus) (b) Name the reverse of heterolytic cleavage. ( c) Describe homolytic bond cleavage of CH_3 - Co- Co- CH_3 . (d) Compare the relative energies of singlet and triplet carbenes. ( e) Of X_ C : (singlet) and X_2 C : (triplet), which is stable ? (f) Of F_2 C :, C 1_2 C :, Br_2 C :, I_2 C : (singlet), which is more stable ? (g) Compare and explain the difference in the IE and EA of *CH_3 .

Types OF Cleavage OF Covalent Bond and Reaction || Intermediate Types

Chemical Properties|Cleavage Of C-O Bond In Ehters|Questions|Summary

The amount of energy required to break a bond is same as the amount of energy released when the same bond is formed. In gaseous state, the enrgy required for hololytic cleavage of a bond is called Bond Dissociation Energy(BDE) or Bond Strength. BDE is affected by s-character of the bond and the stability of the radicals formed. Shorter bonds typically stronger bonds. BDEs for some bonds are given below: Correct match of the C-H bonds(shown in bold) in column J with their BDE in column K is

The amount of energy required to break a bond is same as the amount of energy released when the same bond is formed. In gaseous state, the enrgy required for hololytic cleavage of a bond is called Bond Dissociation Energy(BDE) or Bond Strength. BDE is affected by s-character of the bond and the stability of the radicals formed. Shorter bonds typically stronger bonds. BDEs for some bonds are given below: For the following reaction CH_4(g) + Cl_2(g) overset(light)rarr CH_3Cl(g) + HCl(g) the correct statement is

II. Read the following passage and answer questions 6-10 that follow : During organic reactions, a covalent bond between two carbon atoms or carbon atom and some other atom is broken and a new bond is formed. The fission of bonds can be homolytic or heterolytic forming free radicals, carbocations carbanions, carbenes, etc. This also depends upon the displacement, of electron in a bond and is governed by inductive effect, electromeric effect, reasonance and hyperconjugation. Which of the two CH_2 = CH^(-) or HC -= C^(-) is a better nucleophile?

Cleavage || Classification OF Cleavage || Determinate Cleavage || Indeterminate Cleavage || Complete or Holoblastic Cleavage Meroblastic Cleavage