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Vanessa Reyes_1K
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Joined: Fri Sep 28, 2018 12:28 am


Postby Vanessa Reyes_1K » Thu Nov 29, 2018 11:44 pm

When is the prefix aqua- used?

Patrick Cai 1L
Posts: 93
Joined: Fri Sep 28, 2018 12:25 am

Re: Naming

Postby Patrick Cai 1L » Fri Nov 30, 2018 12:08 am

Aqua- is used where there is water molecules inside the coordination sphere. For instance, [Cr(NH3)3(H2O)3]Cl3 is triamminetriaquachromium(III) chloride.

Bijan Mehdizadeh 1B
Posts: 73
Joined: Fri Sep 28, 2018 12:15 am

Re: Naming

Postby Bijan Mehdizadeh 1B » Sat Dec 01, 2018 4:41 pm

Is it acceptable to write the water ligand as H2O instead of OH2?

Mhun-Jeong Isaac Lee 1B
Posts: 54
Joined: Fri Sep 28, 2018 12:17 am

Re: Naming

Postby Mhun-Jeong Isaac Lee 1B » Sun Dec 02, 2018 3:45 pm

^I'm not too sure about that but I know that when drawing out the Lewis Structures, Dr. Lavelle wants the ligand bonded to the central ion to be written so that the atom with lone electron pairs is connected to the bond line.
For example in the lewis structure for [NiCl2(NH3)4] . 2H20, it would look like this: H3N--Ni for one of the bonds and Ni--NH3 for another.

Posts: 29
Joined: Fri Sep 28, 2018 12:17 am

Re: Naming

Postby 404905747 » Sun Dec 02, 2018 4:16 pm

I think it depends where its located. If it is supposed to be written based on the bond as OH2 then you write it as that and vice versa.

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Re: Naming

Postby yuetao4k » Sun Dec 02, 2018 11:17 pm

OH2 and H2O are used depending on which element is doing the bonding. Two elements that bind together will be written right next to each other.

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