(12 pts. - 3 pts. each part) For each of the following complexes, give the charge of the metalcenter and determine if the complex obeys the 18 Electron Rule. Show work or justification(a) Ni(PPh3)4(b) (n-C6H6)Cr(CO)3(c) (C2H4)2(n³-C3H5)W(CH3)2(d) (cod)Rh(μ2-Cl)2Rh(cod)(No Rh-Rh bonds)

To determine if a complex obeys the 18-electron rule, we need to count the total number of valence…

Answered: (12 pts. - 3 pts. each part) For each…

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter8: Bonding In Transition Metal Compounds And Coordination Complexes

Section: Chapter Questions

Problem 33P

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Is it possible for a complex of a metal in the transition series to have six unpaired electrons? Explain.
a. 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?
Give the coordination number for each metal ion in the following compounds: (a) [Co(CO3)3]3- (note that CO32- is bidentate in this complex). (b) [Cu(NH3)4]2+. (c) [Co(NH3)4Br2]2(SO4)3. (d) [Pt(NH3)4][PtCl4]. (e) [Cr(en)3](NO3)3. (f) [Pd(NH3)2Br2] (square planar). (g) K3[Cu(Cl)5]. (h) [Zn(NH3)2Cl2]
Trimethylphosphine, P(CH3)3, can act as a ligand by donating the lone pair of electrons on the phosphorus atom. If trimethylphosphine is added to a solution of nickel(Il) chloride in acetone, a blue compound that has a molecular mass of approximately 270 g and contains 21.5% Ni, 26.0% Cl, and 52.5% P(CH3)3 can be isolated. This blue compound does not have any isomeric forms. What are the geometry and molecular formula of the blue compound?
A 3.03-g petroleum specimen was decomposed by wet ashing and subsequently diluted to 500 mL in a volumetric flask. Cobalt was determined by treating 25.00-mL aliquots of this diluted solution as follows: Assume that the Co(II)-ligand chelate obeys Beer’s law, and calculate the percentage of cobalt in the original sample.
Which of the following statement(s) is( are) true? a. The coordination number of a metal ion in an octahedral complex ion is 8. b. All tetrahedral complex ions are low-spin. c. The formula for triaquatrianuninechromiwn(III) sulfate is [Cr(H2O)3(NH3)](SO4)3. d. The electron configuration of Hf2+ is [Xe]4f126s2. e. Hemoglobin contains Fe3+.
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?
) For each of the following complexes, give the charge of the metal center and determine if the complex obeys the 18 Electron Rule. Show work or justification (a) Ni(PPh3)4 (b) (η6 -C6H6)Cr(CO)3 (c) (C2H4)2(η3 -C3H5)W(CH3)2 (d) (cod)Rh(µ2-Cl)2Rh(cod) (No Rh-Rh bonds)
The complex [FeL2X2] {where L = 1,10-phenanthroline and X = thiocyanate} gives a magnetic moment, χmT = 3.0 cm3 mol-1 K at stp, but is diamagnetic at 150 K. i) Draw all the possible isomers of the complex.ii) Explain the observed magnetic dataiii) What applications can you envisage for this type of magnetic behaviour?
Reacting Cr(CO)6 with a 2 molar equivalent of PPh; produces a disubstituted chromium complex [Cr(CO)4(PPH3)2] and two molecules of CO. This complex can exist as either trans-[Cr(CO)4(PPh;)2] or cis-[Cr(CO)4(PPH3)2]. The infrared spectrum for this complex has 4 CrC-O vibrations in the metal carbonyl region. Determine which isomer has formed in this reaction.
Please don't use hend raiting and don't use Ai solution
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(12 pts. - 3 pts. each part) For each of the following complexes, give the charge of the metal center and determine if the complex obeys the 18 Electron Rule. Show work or justification (a) Ni(PPh3)4 (b) (n-C6H6)Cr(CO)3 (c) (C2H4)2(n³-C3H5)W(CH3)2 (d) (cod)Rh(μ2-Cl)2Rh(cod) (No Rh-Rh bonds)