Select the correct IUPAC name for \(\left[\mathrm{Mo}\left(\sigma-\mathrm{C}_{3}…

Select the correct IUPAC name for \(\left[\mathrm{Mo}\left(\sigma-\mathrm{C}_{3} \mathrm{H}_{5}ight)\left(\pi-\mathrm{C}_{5} \mathrm{H}_{5}ight)\left(\mathrm{CO}ight)_{3}ight]\)
  1. Tricarbonyl (\(\eta^{5}\)-cyclopentadienyl) allyl molybdate(II)
  2. Allyltricarbonyl \(\left(\eta^{5}ight.\)-cyclopentadiene) molybdate(II)
  3. Allyltricarbonyl \(\left(\eta^{5}ight.\)-cyclopentadiene) molybdenum(II)
  4. Allyltricarbonyl \(\left(\eta^{5}-ight.\) cyclopentadienyl) molybdenum(II)

Solution

The correct I.U.P.A.C name for \(\mathrm{Mo}\left(\sigma-\mathrm{C}_{3} \mathrm{H}_{5}ight)\left(\pi-\mathrm{C}_{5} \mathrm{H}_{5}ight)(\mathrm{CO})_{3}\) : is Allyltricarbonyl ( \(\eta^{5}\) - cyclopentadienyl) molybdenum (II). The central atom is Mo in + oxidation state which is represented by the roman numerals II in the parenthesis. 3 carbonyl ligands, one allyl ligand and one cyclopentadienyl ligand is present. \(\eta^{5}\) represents that the cyclopnetadienyl ligand shares 5 electrons with metal. Hence,option D is correct.

Asked in: JEE-TOPICTESTS-CHEMISTRY

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