As we discussed in class, the orbital overlapping in H2O is applicable to all ot

Question

As we discussed in class, the orbital overlapping in H2O is applicable to all other ML substructure of metal complexes, such as the binding of H2 with M in above question and PitClh substructure of the anticancer drug cisplatin cisPC2NH3). In the case of the PCly substructure, the ligands contain both 2s and 2p orbitals. Answer the following 2 questions by the use of H2O as a model system. (It is helpful to draw the orbitals and find out which pair can overlap with the correct phases.) 35. How many orbitals of Pt below can form a o bond with the LCAO [Y(CIP) + HCrp) of the two CF to no atoms in cisplatin? dxy; dy: dx d2d22Pr; PyP ; 2s b) 2 a) 1 c) 3 d) 4 e) 5 36. Which d orbital of Pt can form a 7 bond with the LCAO SYCP) - YCP)) of the py orbitals of the two Cl atoms in cisplatin? a) dy b) dy c) dxz e) dx2-y2 d) d72 37. Which orbital of F can overlap with the LCAO Y(H) + PCH) ] of the two protons in protonated hydrofluoric acid [H'-F-Hºt on the z axis? b) 2py c) 2p, O a) 2px e) None of the above can! d) All of the above!

Explanation / Answer

Answer 35 c) 3 .i.e. dyz ,dz2 and py these three orbitals of Pt forms sigma bond.

Answer 36 d) dz2 .i.e. d orbital of Pt in zx plane which has two lobes forms pie bond.

Answer 37 c) 2pz orbitals of fluorine will have a nodal plane that completely contains the bond axes which can be overlap.

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