Water as a ligand

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rkang00
Posts: 69
Joined: Fri Sep 28, 2018 12:25 am

Water as a ligand

Postby rkang00 » Tue Dec 04, 2018 11:05 pm

If water is a ligand, how do we write it? There seems to be two ways of writing it: H2O and OH2, but I'm not clear on which style applies to which scenario.
Last edited by rkang00 on Tue Dec 04, 2018 11:29 pm, edited 1 time in total.

Andrea Zheng 1H
Posts: 61
Joined: Fri Sep 28, 2018 12:26 am

Re: Water as a ligand

Postby Andrea Zheng 1H » Tue Dec 04, 2018 11:24 pm

Yes, you would use aqua. Lavelle has posted a "Naming Coordination Compounds" sheet on his website that has some common ligands and their names.

rkang00
Posts: 69
Joined: Fri Sep 28, 2018 12:25 am

Re: Water as a ligand

Postby rkang00 » Tue Dec 04, 2018 11:37 pm

What about in formulas? I'm not sure when to use H2O or OH2.

ThomascnguyenDis1J
Posts: 30
Joined: Fri Sep 28, 2018 12:16 am

Re: Water as a ligand

Postby ThomascnguyenDis1J » Wed Dec 05, 2018 6:49 pm

Would using OH2 instead of H2O be wrong on a test? Is it not interchangable?

Cole Elsner 2J
Posts: 88
Joined: Fri Sep 28, 2018 12:25 am

Re: Water as a ligand

Postby Cole Elsner 2J » Wed Dec 05, 2018 6:52 pm

OH2 and H2O are the same! Oxygen has the lone pairs, so that's where the coordinate covalent bond forms in every situation. Some put O first to show Oxygen is the bonding site, however both OH2 and H2O are the same thing

305127455
Posts: 30
Joined: Fri Sep 28, 2018 12:16 am

Re: Water as a ligand

Postby 305127455 » Wed Dec 05, 2018 9:21 pm

Writing in OH2 instead of H2O illustrates that it is the oxygen actually binding to the metal, so we should write OH2.


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