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Understanding Chelate

Posted: Sat Nov 23, 2019 10:41 pm
by Ada Chung 1C
Can someone explain chelates particularly in question 9.C.7: Which of the following isomers of diaminobenzene can
form chelating complexes and to explain your reasoning (it gives a diagram). I'm just a little confused about what I'm supposed to be looking for in order to determine if it will form a chelate.

Re: Understanding Chelate

Posted: Sun Nov 24, 2019 1:07 am
by KaitlynBali_4B
Chelates can form when more than one ligand binds to a metal atom and forms a ring of atoms. If one ligand has more than one atom that can bind to a metal atom, the appropriate chelate ring can form. However, the ligands one these isomers are amines. Amines only have one lone pair of electrons on the nitrogen atom. That means that if a ring, and thus a chelate, is to form, the two ligands should be closer to each other to bind to the same metal atom. Complex (b) contains ligands that are close enough to each other to form a chelating complex.

Re: Understanding Chelate

Posted: Sun Nov 24, 2019 10:40 am
by Sarah Zhari 1D
Would we always need to draw out Lewis structures to determine if a molecule can form chelate complexes?