Gas‐phase chemistry of first transition series carbonyl metallate ions, [Metal(CO) x ] − : Reactions with 13 C‐ and 18 O‐Labelled carbon dioxide. A Fourier‐transform ion cyclotron resonance study

Gas‐phase reactions between 13 CO 2 and C 18 O 2 and a series of carbonyl metallate ions [Metal(CO) x ] − with x=3, 4 for the metals chromium, manganese, iron and also x=2 for iron, have ben examined at low pressures by Fourier‐transform ion cyclotron resonance mass spectrometry. while the 16‐and 17‐electron ions [Mn(CO) 4 ] − and [Fe(CO) 4 ] − were unreactive, both ligand displacement and oxidative reactions have been identified for the other 13‐, 14‐ and 15‐electron metal‐ion systems as a consequences of Metal‐C, O 13 and 18 OC cleavages in [(CO) x . Metal. η 2 ‐OCO] − intermidiates.