Write down the formulae of the following compounds
(a) tetraamminecobalt(III)-`mu`-amido-`mu`-hydroxidobis(ethylenediamine) cobalt(III) chloride
(b) bis(`eta^(5)`-cyclopentadienyl) iron (II)
( c) tetraammineaquacobalt(III) - `mu`-cyanidotetramminebromidocobalt(III)

Explanation

(a) Tetraammincobalt(III) -`mu-`amido`-mu`- hydroxidobis(ethylenediamine or ethane-1,2-diamine)cobalt(III) chloride

(b) Bis (`eta^(5)`-cclopentadienyl ) iron (II) `" "[Fe(eta^(5)-C_(5)H_(5))_(2)]`
( c) Tetraammineaquacobalt (III) -`mu`-cyanidotetraamminebromidocobalt(III) `" "[(NH_(3))_(4)(H_(2)O)Co-CN-Co(NH_(3))_(4)Br]^(4+)`