degree OF unsaturation(D.U),index OF hydrogen deficiency(IHD),double bond equivalent(DBE),practice problems

The index of hydrogen deficiency (IHD) of benzene is

Double bond equivalent of D is :

Index OF Hydrogen Deficiency (I.H.D) || IUPAC Nomenclature OF Alkanes

Find out the double bond equivalent (DBE) value of the given following compound:

The degree of unsaturation or index of hydrogen deficiency in the following is : i. C_(6)H_(14) ii. C_(4)H_(6) iii. C_(6)H_(6)

Degree of unsaturation of A = 2, it contains no double or triple bonds.

Double bond equivalents help in search for structure of a compound. It involves following steps: Calculate the expected number of hydrogen atoms in the saturated structure. (a) For C_(n) there would be: (2n+2) hydrogens if compound contains C,H,O only. (b) For C_(n),N_(m) there would be (2n+2+m) hydrogens. Subtract the actual number of hydrogen and divide by 2. This gives the double bond equivalents. Ring is considered to possess single DBE. Double bond equivalent of benzene will be:

Double bond equivalents help in search for structure of a compound. It involves following steps: Calculate the expected number of hydrogen atoms in the saturated structure. (a) For C_(n) there would be: (2n+2) hydrogens if compound contains C,H,O only. (b) For C_(n),N_(m) there would be (2n+2+m) hydrogens. Subtract the actual number of hydrogen and divide by 2. This gives the double bond equivalents. Ring is considered to possess single DBE. Which of the following is not correct?