Resonance structure of acetylacetonate, magnetic moment of Mn(acac)3

Questions:

1. Draw the structures of acetylacetonate and its resonance structure.

 

 

2. Structure of Mn(acac)₃

 

 

3. Find out the magnetic moment of Mn(acac)_3.

Charge of Mn³⁺ = +3

Total number of electron in Mn atom = 25

Number of electron in Mn³⁺ ion = 22

Eletron configuration of Mn³⁺ : [Ar] 3d⁴

μ_s = g √s(s+1)

= 2 √ 2(2+1)

= 4.90μB

 

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