3. (a) What is meant by coordinative unsaturation? How is it related to catalytic properties of inorganic complexes? Furnish two methods for generation of coordinative unsaturated compounds. (b) Predict the product and chemistry involved in the following reactions: (i) [Rh(CO)₂Cl₂] + CH3I (ii) Pt(PPh3)3 + CF3I (iii) Ru(PPh3)2(CO)3 + H₂-

3. (a) What is meant by coordinative unsaturation? How is it related to catalytic properties of inorganic complexes? Furnish two methods for generation of coordinative unsaturated compounds. (b) Predict the product and chemistry involved in the following reactions: (i) [Rh(CO)₂Cl₂] + CH3I (ii) Pt(PPh3)3 + CF3I (iii) Ru(PPh3)2(CO)3 + H₂-

Chemistry: An Atoms First Approach

2nd Edition

ISBN:9781305079243

Author:Steven S. Zumdahl, Susan A. Zumdahl

Publisher:Steven S. Zumdahl, Susan A. Zumdahl

Chapter20: Transition Metals And Coordination Chemistry

Section: Chapter Questions

Problem 6Q: Four different octahedral chromium coordination compounds exist that all have the same oxidation...

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Two different compounds are known with the formula Pd(py)2Cl2, but there is only one compound with the formula Zn(py)2Cl2. The symbol py is for pyridine, a mono-dentate ligand. Explain the differences in the Pd and Zncompounds.
4 a) (i) Draw the structure of [Co(CO)2(NO)(cot)] where cot is cyclooctatriene. (ii) What is the coordination number of the Co ion? (iii) What is the hapticity of the cot ligand? (iv) Briefly describe the bonding between Co and cot.
(a) In early studies it was observed that when the complex [Co(NH3)4Br2]Br was placed in water, the electrical conductivityof a 0.05 M solution changed from an initial value of191 ohm-1 to a final value of 374 ohm-1 over a period of anhour or so. Suggest an explanation for the observed results.(b) Write a balanced chemical equation to describe the reaction.(c) A 500-mL solution is made up by dissolving 3.87 g ofthe complex. As soon as the solution is formed, and beforeany change in conductivity has occurred, a 25.00-mLportion of the solution is titrated with 0.0100 M AgNO3solution. What volume of AgNO3 solution do you expectto be required to precipitate the free Br-(aq)? (d) Based onthe response you gave to part (b), what volume of AgNO3 solution would be required to titrate a fresh 25.00-mL sampleof [Co(NH3)4Br2]Br after all conductivity changes haveoccurred?
The palladium acetate complex, [Pd(OAc)2], is useful for performing catalytic reactions such as the Heck reaction and the Cope reaction. (a) Briefly describe the Cope reaction. Illustrate your answer with suitable chemical equations.
(a) In early studies it was observed that when the complex [Co(NH3)4Br2]Br was placed in water, the electrical conductivity of a 0.05 M solution changed from an initial value of 191 ohm-1 to a final value of 374 ohm-1 over a period of an hour or so. (b) Write a balanced chemical equation to describe the reaction.
Sketch the structure of the complex in each of the follow- ing compounds and give the full compound name: (a) cis-[Co(NH3)4(H,O),](NO;)2 (b) Na,[Ru(H,O)Cl5] (c) trans-NH4[Co(C;04)2(H2O)z] (d) cis-[Ru(en);Cl2]
(i) Draw the geometrical isomers of complex [Pt(NH3)2Cl2].(ii) On the basis of crystal field theory, write the electronic configuration for d4 ion if Δ0 < P.(iii) Write the hybridization and magnetic behaviour of the complex [Ni(CO)4]. (At. no. of Ni = 28)
Sketch the structures of the following complexes. Indicate any cis, trans, and optical isomers.(a) [Pt(H2O)2Br2] (square planar)(b) [Pt(NH3)(py)(Cl)(Br)] (square planar, py = pyridine, C5H5N)(c) [Zn(NH3)3Cl]+ (tetrahedral)(d) [Pt(NH3)3Cl]+ (square planar)(e) [Ni(H2O)4Cl2](f) [Co(C2O4)2Cl2]3− (note that C2O42− is the bidentate oxalate ion, −O2CCO2−)
Pyridine (CsHgN), abbreviated py, is the molecule N: (a) Would you expect pyridine to act as a monodentate or bidentate ligand? (b) For the equilibrium reaction [Ru(py),(bipy)]²+ + 2 py = [Ru(py),J* + bipy would you predict the equilibrium constant to be larger or smaller than one?
State a reason for each of the following situations: (i) Co2+ is easily oxidised to Co3+ in presence of a strong ligand. (ii) CO is a stronger complexing reagent than NH3. (iii) The molecular shape of Ni(CO)4 is not the same as that of [Ni(CN)4]2_.
What type of isomerism is shown by the complex [Ag(NH3)2][Ag(CN)2]? (ii) On the basis of crystal field theory, write the electronic configuration for d4 ion if A0 < P. (iii) Write the hybridization and shape of [Ni(CN)4]2_. (Atomic’number of Ni = 28)
For the complex [Fe(en)2Cl2]Cl, identify the following: (i) Oxidation number of iron. (ii) Hybrid orbitals and shape of the complex. (iii) Magnetic behaviour of the complex. (iv) Number of its geometrical isomers. (v) Whether there may be optical isomer also. (vi) Name of the complex.