Refer to the figure showing the structure of various ligands to answer questions 4 and 5. Which ligand(s) can participate in linkage isomerism?
(a) All of the ligands can participate in linkage isomerism
(b) I, II, and III
(c) I and IV
(d) II and IV

Question

Refer to the figure showing the structure of various ligands to answer questions 4 and 5. Which ligand(s) can participate in linkage isomerism?

(a) All of the ligands can participate in linkage isomerism

(b) I, II, and III

(c) I and IV

(d) II and IV

Accepted Answer

Hi, everybody. Welcome back. Let's take a look at our next problem. It says, consider the ligand shown below, identify the ligands that can participate in linkage isomerism. We have four ligands. Number one, a cyanide ligand C turle bonded to N number two A cyan ligand, a carbon with a double bonded nitrogen on one side and oxygen on the other. Number three, a cata coate ligand which is a Fenn ring in which two of the two adjacent carbons are carbonel groups. And number four, the ethylene diamine are abbreviated lowercase E lowercase N ligand which has two carbons next to each other, each of which has a terminal NH two group. Our answer choices are A one and two B one and three C two and four or D, none of the ligands can participate in Lincoln isomerism. So we need to recall the definition of Lincoln dialer, which is when a ligand can bond to the central metal atom through either of two different atoms. Keyword here being different. So as we look through our ligands, number one, we have carbon and nitrogen, each of which is electron rich with a lone pair. We don't often think of carbon as an electron donor. But in this case, as we see, the carbon has five valence electrons around it. It's electron rich and can donate electrons in this context. So both carbon and nitrogen could be donors, there are two different atoms. Therefore, this one, number one can participate in linkage isomerism. So we'll circuit number one, we can go ahead and eliminate them. Choice C which is two and four and doesn't include one and choice D, which is that none of them can participate in linkage isomerism. Let's look at number two. In this case, we've got possible electron donors in the nitrogen and the oxygen atoms. So two different atoms that can each be a donor two different ways to bond with the metal. And so number two also participates in Lincoln dialer. So we are actually already down to our answer because choice A is one and two. Choice B doesn't include two. It's one and three. So we can eliminate that to be thorough. We will keep looking at other molecules. We should note here that one and two both have this CN bond in it version of cyano group. And that is a good way to remember which ones can be have linkage isomerism. So cyanide, cyan and thiocyanate where you have a sulfur in there also can have this linkage isomerism. So just good to remember that group. When you see it as a ligand, number three are cat coate well, it has two different elect or not two different, it has two electron donor atoms and these two oxygens, but they're the same atom. So same atom making it b dentate rather than having linkage isomers. And the two oxygens will both hang on to that central metal atom binding in the one molecule, one ligand in two different places. That is also the case with number four, our ethylene diamine, these nitrogens both bond with the metal atom. So again, same atom it is by dentate rather than participating in Lincoln isomerism. So that's why number four isn't what we're looking for. So once again, our ligands that can participate in linkage isomerism choice A one and two, see you in the next video.

Refer to the figure showing the structure of various ligands to answer questions 4 and 5. Which ligand(s) can participate in linkage isomerism?
(a) All of the ligands can participate in linkage isomerism
(b) I, II, and III
(c) I and IV
(d) II and IV

Verified Solution

Key Concepts

Linkage Isomerism

Ligands

Coordination Compounds

Refer to the figure showing the structure of various ligands to answer questions 4 and 5. Which ligand(s) can participate in linkage isomerism?(a) All of the ligands can participate in linkage isomerism(b) I, II, and III(c) I and IV(d) II and IV

Verified Solution

Key Concepts

Linkage Isomerism

Ligands

Coordination Compounds

Refer to the figure showing the structure of various ligands to answer questions 4 and 5. Which ligand(s) can participate in linkage isomerism?
(a) All of the ligands can participate in linkage isomerism
(b) I, II, and III
(c) I and IV
(d) II and IV