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veneziaramirez 3I
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Postby veneziaramirez 3I » Thu Nov 30, 2017 3:24 am

What suffixes should we memorize? I understand if one of the ligands has a negative charge of one then -ate is added to the metal, but if it has a negative charge of 2, no suffix is added as demonstrated in 17.29 d)?

Qining Jin 1F
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Joined: Fri Sep 29, 2017 7:07 am

Re: Suffixes

Postby Qining Jin 1F » Thu Nov 30, 2017 11:23 am

The textbook says that "If the complex has an overall negative charge (an anionic complex), the suffix -ate is added to the stem of the metal’s name," so it does not matter if the ligand has a negative charge or not. Because 17.29d has an overall positive charge, no suffix is added to the metal

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Re: Suffixes

Postby soniatripathy » Tue Dec 05, 2017 3:06 am

You should also know the suffixes for polyatomic ions. For example ions at end in -ate, like sulfate, the ending in the coordination compound should be -ato. sulfate --> sulfato. For ions ending in -ite, like nitrite, the ending will be changed to -ito. nitrite --> nitrito.
Another one you should know is -ide to -ido. chloride --> chlorido.
With these basic suffix rules and the need-to-know/exceptions listed in the chart it should be fairly easy to name coordination complexes

Clarissa Molina 1D
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Re: Suffixes

Postby Clarissa Molina 1D » Wed Dec 06, 2017 8:30 pm

For prefixes, in what cases would bis- tris- and tetrakis- be used?

Andrea ORiordan 1L
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Re: Suffixes

Postby Andrea ORiordan 1L » Wed Dec 06, 2017 10:24 pm

You use bis, tris, tetrakis, etc, if the ligand already contains a greek prefix (eg. ethyleneDIamine) or if it is polydentate (eg. oxalate).

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