When naming metals...

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When naming metals...

Postby Paola_RubioRod_1F » Mon Nov 14, 2016 7:15 pm

Hi, sorry I'm still confused on something really simple. Could someone explain to me when naming metals that are within the brackets, when we use the -ate ending vs the non-ate ending?

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Re: When naming metals...

Postby Alicia_Miller_3F » Mon Nov 14, 2016 7:24 pm

It seems that only when the compound in the brackets is bonded to another element that you would use the -ate ending. For example, Na[Co(NH3)3Cl3] has the -ate ending because the metal and ligands are bonded to Na+. This would be named Sodium Triamminetrichlorocobaltate(II) where as the Co(NH3)3Cl3]-1 by itself would be called Triamminetrichlorocobalt(II) ion. The -ate ending is also used when a polyatomic ion contains oxygen, which would apply in cases other than this one where you are looking only at an ion that includes oxygen.
Hope this helps!

Vincent Tse 2B
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Re: When naming metals...

Postby Vincent Tse 2B » Mon Nov 14, 2016 8:02 pm

If you refer to page 118 in the course reader, it states that the ending -ate is added to complexes with a negative charge.

In other words, a transition metal complex should have -ate added to the metal ion's name only when the entire complex is negative.

Hopefully this helped!

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