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Concept explainers
Interpretation:
The possible isomers for given octahedral complex
Concept Introduction:
Isomerism: Two chemical compounds are said to be isomers if they have same number and kind of atoms but different only in their orientation that is structural arrangements.
- Structural or Constitutional isomers: Have same molecular formula but different bonding arrangements of atoms. It is further classified as Linkage and Ionization isomers.
- Stereoisomers: Differ in their spatial arrangement of atoms.
Linkage isomers: The metal bond to ligand via either of two different donor atoms present in ligand. E.g.
There are different types of isomerism in which geometric is of one type where the rotation around the atom is restricted like in cis-trans configuration. This is also refereed as cis-trans isomerism.
Diastereoisomers: The stereo isomers of one compound which are not mirror images with each other are referred as diastereoisomers.
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Chapter 20 Solutions
General Chemistry: Atoms First
- Four different octahedral chromium coordination compounds exist that all have the same oxidation state for chromium and have H2O and Cl as the ligands and counterions. When 1 mole of each of the four compounds is dissolved in water, how many moles of silver chloride will precipitate upon addition of excess AgNO3?arrow_forwarda. In the absorption spectrum of the complex ion Cr(NCS)63, there is a band corresponding to the absorption of a photon of light with an energy of 1.75 104 cm-1. Given 1 cm1 = 1.986 1023 J, what is the wavelength of this photon? b. The CrNC bond angle in Cr(NCS)63 is predicted to be 180. What is the hybridization of the N atom in the Ncs- ligand when a Lewis acid-base reaction occurs between Cr3+ and NCs- that would give a 180 CrNC bond angle? Cr(NCS)63 undergoes substitution by ethylenediamine (en) according to the equation Cr(NCS)63+2enCr(NCS)2(en)2++4NCS Does Cr(NCS)2(en)2+ exhibit geometric isomerism? Does Cr(NCS)2(en)2+ exhibit optical isomerism?arrow_forwardA complex ion is formed from one Fe*, two CN and four NO, ions. (a) What is the structural formula and name of the complex ion? (b) Identify the type of isomerism and draw the isomer structures exhibited by the complex ion. (c) Draw the molecular orbital diagram and calculate the CFSE for the complex ion.arrow_forward
- 3. Amino acids can act as ligands toward transition metal ions. The simplest amino acid is glycine (NH2CH2CO2H). (a) Draw a structure of the glycinate anion (H₂N-CH₂-CO₂) acting as a bidentate ligand. Which atoms in the glycinate ion will bind to a metal ion? (b) Draw the structural isomers of the square planar complex Cu(NH₂CH₂CO₂)₂.arrow_forwardOne of the more famous species in coordination chemistry is the Creutz-Taube complex: 5+ (NH3);RuN NRu(NH3)5 It is named for the two scientists who discovered it and ini- tially studied its properties. The central ligand is pyrazine, a planar six-membered ring with nitrogens at opposite sides. (a) How can you account for the fact that the com- plex, which has only neutral ligands, has an odd overall charge? (b) The metal is in a low-spin configuration in both cases. Assuming octahedral coordination, draw the d-orbital energy-level diagram for each metal. (c) In many experiments the two metal ions appear to be in exactly equivalent states. Can you think of a reason that this might appear to be so, recognizing that electrons move very rap- idly compared to nuclel?arrow_forward(a) Square planar complexes (of MXJLJ type) with coordination number of 4 exhibit geometrical isomerism, whereas tetrahedral complexes with similar composition do not. Why? (b) Describe the type of hybridization, shape and magnetic property of [CO(NH3)4Cl2]Cl. [Given : At. no. of Co = 27]arrow_forward
- Suppose that the complex ion [Co(NH3)2(OH2)2Cl2]+ is synthesized with the two ammine ligands cis to each other, the two aqua ligands cis to each other, and the two chloro ligands cis to each other (Fig. 8.14a). Is this complex optically active?arrow_forwardThe last one was already solved.arrow_forwardAn octahedral complex, MA4B2 (A and B are monodentate ligands), has two stereoisomers (trans and cis). Considering the point groups for each of these isomers, which of the following statements is correct? O The cis isomer is polar and the trans isomer is non-polar O The trans isomer is polar and the cis isomer is non-polar Both isomers are polar O Both isomers are non-polararrow_forward
- (i) What type of isomerism is shown by the complex [Co(en)3]Cl3?(ii) Write the hybridisation and magnetic character of [Co(C2O4)3]3-.(At. no. of Co = 27)(iii) Write IUPAC name of the following complex: [Cr(NH3)3Cl3]arrow_forwardA complex with the following formula may possess which kind of isomerism? (Different letters A-F denote different ligands.) K[MA4B2]arrow_forwardHow many stereoisomers exist for octahedrally shaped complex MA4(en), assuming A is monodentate ligand. (en =H,NCH2CH,NH2), ignoring the position of hydrogen atoms. 4 O 1arrow_forward
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