Ammonium diaquabis(oxalato) typically refers to a complex where ammonium (NH4+) is associated with a metal ion that is coordinated with two water molecules (aqua ligands) and two oxalate ligands (oxalato).
In this type of coordination complex, the coordination number is determined by the number of donor atoms bonded to the central metal ion. The oxalate ion (C2O4^2-) is a bidentate ligand, meaning it can coordinate through two donor atoms, while each water molecule is a monodentate ligand, coordinating through one donor atom.
Assuming a common metal such as a transition metal is central to this complex:
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Coordination Number: 6 (2 from the two bidentate oxalate ligands and 2 from the two water ligands)
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Geometry: The typical geometry for a coordination number of 6 is octahedral.
So, for ammonium diaquabis(oxalato), the coordination number is 6, and the geometry is octahedral.
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