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Do all the ligands in alphabetical order not paying attention to the greek prefixes then put the central metal atom. All of these must be in the coordination sphere. Following the items within the coordination sphere, put the other ions and molecules.
Ruth Glauber 3L wrote:Can anyone walk me through an example?
If you're looking at 9c.1c, they give you [Co(CN)5 (OH2)] 2-. So if you'd start off by listing the ligands first: cyanide and water. If water is a ligand, you'd call it aqua and if cyanide is the ligand, you'd change it to cyanido because the ending of cyanide is -ide. You'd then have to put this in alphabetical order, so you'd have aqua first and then cyanido. In the compound, you have five cyanide ions, which you indicate using the greek prefix penta. You would then list the transition metal, cobalt, but add -ate to the end of it because the coordination complex has an overall negative charge. You'd then put the oxidation number of the metal in Roman numerals, which is III in this case. So you'd be left with aquapentacyanidocobaltate (III).
(I might be wrong).
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