ABC26IN0233 · Organometallic Compounds
Subject: Inorganic Chemistry · Chapter: Organometallic Compounds · Topic: 18 Electron Rule · Exam: CSIR-NET 2012 · Marks: 2 · Difficulty: Easy
The complex that DOES NOT obey 18- electron rule is:
(a)$\mathrm{[(\eta^{5}\text{-}C_5H_5\,)RuCl(CO)(PPh_3)]}$
(b)$\mathrm{[W(CO)_3(SiMe_3)(Cl)(NCMe)_2]}$
(c)$\mathrm{[IrCl_3(PPh_3)_2(AsPh)_2]^-}$
(d)$\mathrm{[Os(N)Br_2(PMe_3)(NMe_2)]^-}$
Answer
Explanation
Total valence electron counts: | Compound | T.V.E. |
|---|
| $[(\eta^{5}\text{-}\mathrm{C_5H_5})\mathrm{RuCl(CO)(PPh_3)}]$ | $5+8+1+2+2=18e^{-}$ |
| $[\mathrm{W(CO)_3(SiMe_3)(Cl)(NCMe)_2}]$ | $6+6+1+1+2\times2=18e^{-}$ |
| $[\mathrm{IrCl_3(PPh_3)_2(AsPh_2)}]^{-}$ | $9+3+4+1+1=18e^{-}$ |
| $[\mathrm{Os(N)Br_2(PMe_3)(NMe_2)}]^{-}$ | $8+5+2+1+1=17e^{-}$ |
Open in whiteboard · Browse this chapter in the app