Sodium Carbonyl Ferrates, Na2[Fe(Co)4], Na2[Fe2(Co)8], and Na2[Fe3(Co)11]. Bis[μ-Nitrido-Bis(Triphenylphosphorus)(1 +)] Undeca-Carbonyltriferrate(2-), [(Ph3P)2N]2[Fe3(Co)11]

Sodium Carbonyl Ferrates, Na2[Fe(Co)4], Na2[Fe2(Co)8], and Na2[Fe3(Co)11]. Bis[μ-Nitrido-Bis(Triphenylphosphorus)(1 +)] Undeca-Carbonyltriferrate(2-), [(Ph3P)2N]2[Fe3(Co)11]