1. When a coordination compound CoCl3.6NH3 is mixed with AgNO3, 3 moles of AgCl are precipitated per mole of the compound. Write
(i) Structural formula of the complex
(ii) IUPAC name of the complex
2. Using IUPAC norms write the formulae for the following:
(a) Potassium trioxalatoaluminate(III)
(b) Dichloridobis–(ethane-1,2-diamine) cobalt(III)
3. Explain the following terms giving a suitable example in each case:
(i) Ambident ligand
(ii) Denticity of a ligand
(iii) Crystal field splitting in an octahedral Field
4. Give the formula of each of the following coordination entities:
(i) Co3+ ion is bound to one Cl–, one NH3 molecule and two bidentate ethylene diamine (en) molecules.
(ii) Ni2+ ion is bound to two water molecules and two oxalate ions.
Write the name and magnetic behavior of each of the above coordination entities.
(At. Nos. Co = 27, Ni = 28)
5. For the complex [NiCl4]–2, write
(i) The IUPAC name
(ii) The hybridization type
(iii) The shape of the complex (Atomic no. of Ni = 28)
1. Give the formula of each of the following coordination entities:
(i) Co3+ ion is bound to one Cl–, one NH3 molecule and two bidentate ethylene diamine (en) molecules.
2. (i) Write the IUPAC name of the complex
[Cr(NH3)4Cl2]Cl
(ii) What type of isomerism is exhibited by the complex [Co(en)3]3+? (en = ethane-1,2-diamine)
(iii) Why is [NiCl4]2– paramagnetic but [Ni(CO)4] is diamagnetic?
(At. Nos.: Cr = 24, Co = 27, Ni = 28)
3. (i) What type of isomerism is shown by [CO(NH3)5ONO]Cl2
(ii) On the basis of crystal field theory, write the electronic configuration for d4 ion if Δ0 < P
(iii) Write the hybridization and shape of [Fe(CN)6]3– (Atomic number of Fe = 26)
4. Giving a suitable example for each, explain the following:
(i) Crystal field splitting
(ii) Linkage isomerism
(iii) Ambidentate ligand
5. (a) Write the formula of the following coordination compound: Iron (III) hexacyanoferrate (II)
(b) What type of isomerism is exhibited by the complex [Co(NH3)5Cl]SO4?
(c) Write the hybridisation and number of unpaired electrons in the complex [CoF6]3–.
(Atomic No. of Co = 27)