Although both nitrogen and phosphorous take place in Group VA, in complex formation ammonia acts as sigma-donor while PR3 is both sigma–donor and pi-acceptor. In the light of this explanation, show the sigma and pi interactions in [Co(PR3)6]2+ according to MO theory. What makes PR3 a different ligand than ammonia? Do I need to replace t2g orbitals in my diagram? How can I show PR3 ligands using d orbitals?

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Question: Although both nitrogen and phosphorous take place in Group VA, in complex formation ammonia acts as sigma-donor while PR3 is both sigma–donor and pi-acceptor. In the light of this explanation, show the sigma and pi interactions in [Co(PR3)6]2+ according to MO theory. What makes PR3 a different ligand than ammonia?

Do I need to replace t2g orbitals in my diagram? How can I show PR3 ligands using d orbitals? 

+2
„6": CA] us 3d = 3d7
+2
%3D
27
PR3 = Strong F. lipand, T- acceptor.
%3D
tu
?.
us
tzg
tiu
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uP
aig
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es
tiu
Transcribed Image Text:+2 „6": CA] us 3d = 3d7 +2 %3D 27 PR3 = Strong F. lipand, T- acceptor. %3D tu ?. us tzg tiu ep uP aig 3d tzglnb) es tiu
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