Naming Help

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GFolk_1D
Posts: 101
Joined: Fri Aug 09, 2019 12:15 am

Naming Help

Postby GFolk_1D » Mon Nov 25, 2019 9:22 am

Has anyone seen any helpful videos to explain/help memorize how to name compounds? Thanks!

Paul Hage 2G
Posts: 105
Joined: Thu Jul 25, 2019 12:17 am

Re: Naming Help

Postby Paul Hage 2G » Mon Nov 25, 2019 9:31 am

For me, the method I use to name coordination compounds is:
1) Identify whether the complex ion is a cation or anion in the compound
2) If it is an anion, name the cation first by using its elemental name
2a) Name the ligands with their prefixes before naming the transition metal cation (alphabetical order if there are multiple ligands -- the numerical prefixes do not affect the alphabetical order).
2b) For polydentate ligands, we must use the following prefixes: bis- (2), tris- (3), tetrakis- (4).
2c) I typically end the ligand names with -o ((CN)6--->hexacyano)
2d) After the ligands are named, calculate the oxidation state of the transition metal and place it in parentheses after the cation (using Roman numerals).
If the transition metal cation is part of the cation, you would use its regular (periodic table) name.
If the transition metal cation is part of the anion, you would use its Latin name, ending in -ate. (EX: iron--->ferrate).
Hope that helps.


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