Coordination CompoundHard

Question

A complex anion is formed by Osmium (in some oxidation state) with ligands (in proper number so that coordination number of osmium becomes six). Which of the following can be its correct IUPAC name?

Options

A.pentachloridonitridoosmium(VI)
B.pentachloridonitridoosmate(VI)
C.azidopentachloridoosmate(VI)
D.None of these

Solution

(A) If [Os(Cl)5N]2-, complex is anion, so name of the element should be osmate (VI).
(C) If [Os(Cl)5N3]0, complex is neutral, so name of the element should be osmium (VI).
Therefore, (B) option is correct according to the IUPAC rule.

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