The complex that DOES NOT obey 18- electron rule is: · ABC26IN0233
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)$[(\eta^5\text{-}\mathrm{C_5H_5})\mathrm{RuCl(CO)(PPh_3)}]$
(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
[(η5 –C5H5 )RuCl(CO)(PPh3)] T.V.E = 5+8+1+2+2=18e- [W(CO)3(SiMe3)(Cl)(NCMe)2] T.V.E= 6+ 6+1+1+ 2x2 =18e- [IrCl3(PPh3)2(AsPh2)]- T.V.E= 9+ 3 +4+1+ 1 =18e- [Os(N)Br2(PMe3)(NMe2)]- T.V.E= 8+ 5 +2+1+ 1 =17e DEC 2012
Explanation as extracted from the printed page; notation may be imperfect.
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