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(a) [Tc(CO)6] is unstable according to electron counting. Explain this observation. What process would it undertake to achieve stability? (5 marks) (b) In a reaction
(a) [Tc(CO)6] is unstable according to electron counting. Explain this observation. What process would it undertake to achieve stability? (5 marks) (b) In a reaction [Os(6C6H6)2]2+ converts into its neutral derivative. This reaction is accompanied by a structural change. Give the reaction equation and explain which structural change has occurred, giving both the systematic name and molecular formula of the neutral derivative. (6 marks) (c) For [Mn(NO)3(CO)] in which the M-N-O bond is linear: (i) determine the formal oxidation state of the metal, (2 marks) (ii) give the electron count, (2 marks) (iii) determine the geometry about the Mn centre, and (1 mark) (iv) give the name of this compound. (1 mark) (a) [Tc(CO)6] is unstable according to electron counting. Explain this observation. What process would it undertake to achieve stability? (5 marks) (b) In a reaction [Os(6C6H6)2]2+ converts into its neutral derivative. This reaction is accompanied by a structural change. Give the reaction equation and explain which structural change has occurred, giving both the systematic name and molecular formula of the neutral derivative. (6 marks) (c) For [Mn(NO)3(CO)] in which the M-N-O bond is linear: (i) determine the formal oxidation state of the metal, (2 marks) (ii) give the electron count, (2 marks) (iii) determine the geometry about the Mn centre, and (1 mark) (iv) give the name of this compound. (1 mark)
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