Indicate the coordination number of the metal and the...

Indicate the coordination number of the metal and the oxidation number of the metal, as well as the number and type of each donor atom of the ligands, for each of the following complexes: (a) [Co(en)2(C2O4)]+ (b) NH4[Cr(NH3)2(NCS)4] (c) [Cu(bipy)2I]I

Transcript

00:01 So this question says indicates the coordination number of the oxidation state, oxidation number of metas well as a number and type of each donor atom and the ligand for each of the following complexes.

00:13 So we have the first one is cobot, e .n2, c204.

00:25 Okay.

00:26 So here we have to indicate coordination number.

00:31 So here this is a biotentate ligand, and this is also.

00:35 A bi -identate ligand.

00:37 So the coordination number to the central metal here will be, this is 2 plus 2 that is 4.

00:46 So cn is equal to 4.

00:51 Let me make it as a table.

00:54 So cn is equal to 4 coordination number, oxidation state, oxidation state, in this case is this is neutral this is minus 2 so minus 2 so plus 1 minus 2 will be plus 3 so this is plus 3 for cobalt here then what else and the type of each donor heart arm of the ligand so here the donor heart form i'll put here is nitrogen the donor heart time here is oxygen okay then we have this complex here we have a, i'm going to write it the way it's written, nh4.

01:45 We have cr, nh3, 2, ncs, 4.

01:56 Okay, so coordination number here, harmoniar, 1, 2, ncs, that's 4 of them.

02:04 So that's 6.

02:05 Oxidation state of chromium here is going to be, ammonia is neutral.

02:09 This is minus 1, minus 1 times 4.

02:12 Will be minus 4, then we have a, this is positive.

02:16 So the charge on this complex should be negative.

02:18 So we have minus, we have minus one.

02:25 We have minus 4 plus 4, right? we'll give us plus 3.

02:30 So this is plus 3 as well.

02:32 And the coordinating atom here is nitrogen.

02:37 Coordination atom here is nitrogen as well.