The number of metal-metal bonds in [W2(OPh)6] is:
  • a)
    1
  • b)
    2
  • c)
    3
  • d)
    4
Correct answer is option 'C'. Can you explain this answer?

IIT JAM Question

By Ajit Yadav · May 11, 2020 ·IIT JAM
3 Answers
Shahbaaz Ahmed answered Sep 27, 2018
Total valency electron = 12 + 18 = 30 (A)           [ (OPh) in bridging donate 3 electron]

B = (nx18–A) = 36–30 = 6

Metal-metal bond = B/2 = 6/2 = 3

Shunmuga Nathan answered May 11, 2020
No of metal - metal bond= (18n - TVE )/2
Here, TVE= 2(6) + 6(3) = 30
n= 2 ( n denotes the number of metals present)

Hence, No of metal - metal bonds= (36-30)/2= 3 metal - metal bonds.
Hence, your answer is c) 3

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