ON – C – N – NO* ( b ) Cobaltocene , CozCo , is stable at room temperature . However , the rhodium* analogue is unstable and dimerizes to give the…

could you please tell and explain question 4 to me and explain the three states T,E,A?

ON -C – N – NO*( b )Cobaltocene , CozCo , is stable at room temperature . However , the rhodium*analogue is unstable and dimerizes to give the compound with molecular formulaRha C2OF20. Propose two possible structures for the rhodium dimer and indicate*the electron count of the two structures .( 6 marks )4 .( a ) Give the ground state Russell – Saunders terms for :"( 1 )Crist jon( 1 1 ) Cost ionGive also the spectral terms in an octahedal field that would correlate with the*Russell – Saunders terms in ( 1 ) and ( ii ) .( 3 marks )Page 3 of 1.1( b ) Classify the following electronic configurations as I , A , or Estates .( 1 ) ( 1 28 ) " ( ed )* in an octahedral metal complex with S = !'( 1 1 ) ( 1 28 ) ( eg ) in an octahedral metal complex with S = 5/2( iii ) ( 1 28 ) ( eg )* in an octahedral metal complex with S = 0( iv ) ( @ )* ( + 2 )` in a tetrahedronl complex with S = ]( 4 marks )5 .( a )Compare the metal-ligand bond lengths within each of the complexes ,[ CI ( OH 2 ) 612+, [Co ( OF1 2 )6}+ and [Co(NH3 ) OF+ and justify your answers withreasons .( 4 marks )( b )State the innersphere election transfer mechanism .*Predict which of thecomplexes in ( a ) can undergo innersphere electron transfer reactions .Explain .( 4 marks )Section BAnswer THREE questions in this section in the BLUE book . ( Total 60 marks )6 .( 2 ) The industrial synthesis of ibuprofen is conducted through an efficient three-stepprocess called Boots -Hoechst – Celanese Synthesis shown in Figure 2 . The keystep that transforms A to B in the presence of CO using the catalystcis – PdCla ( PPL13) 2 is shown below . Propose a catalytic cycle that converts A to BDraw all intermediates and identify all reaction steps in the process .cis – Pack2 ( Pph3/ 2 , CO CH-4H 2O HO -BibuprofenFigure 2 . Reaction Scheme of Boots – Hoechst – Celanese Synthesis( 12 marks )

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