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- How many bonds could each of the following chelating ligands form with a metal ion? (a) acetylacetone, a common ligand in organometaillic catalysts CH3 -C-CH2-C- CH3 (b) diethylenetriamine, used in a variety of industrial processes NH2-CH2-CH2-NH-CH2-CH2-NH2 (c) salen, a common ligand for chiral organometallic catalysts OH Но (d) porphine, often used in supermolecular chemistry as well as catalysis; biologically, porphine is the basis for many different types of porphyrin-containing proteins, including heme proteins NH N- N- HN-Werner prepared two compounds by heating a solution of PtCl₂ with triethyl phosphine, P(C₂H₅)₃, which is an excellent ligand for Pt. The two compounds gave the same analysis: Pt,38.8%; Cl, 14.1%; C, 28.7%; P, 12.4%; and H, 6.02%. Writeformulas, structures, and systematic names for the two isomersHow many bonds could each of the following chelating ligands form with a metal ion? (a) acetylacetone, a common ligand in organometallic catalysts CH3-C-CH2-C-CH3 (b) diethylenetriamine, used in a variety of industrial processes NH2-CH2-CH2-NH-CH2-CH2-NH2 (c) salen, a common ligand for chiral organometallic catalysts EN N: -OH Но-
- When a solution of PtCl2 reacts with the ligand trimethylphosphine,P(CH 3) 3, two compounds are produced. The compounds share thesame elemental analysis: 46.7% Pt; 17.0% Cl; 14.8% P; 17.2% C;4.34% H. Determine the formula, draw the structure, and give thesystematic name for each compound.In general, would you expect EDTA4- to coordinate to transition metal ions more or less strongly than ethylenediamine does? Justify your answer with a reason other than the different charges on the two ligands.Which species are more likely to act as ligands? (a) Positivelycharged ions or negatively charged ions? (b) Neutralmolecules that are polar or those that are nonpolar?
- Compounds with lone pair of electrons are able to form complexes via the donation of electrons intothe empty d orbital of transition metals. Which of these two: NF3and NH3has greater tendency to do so?and give reason for your choice.Characterize each of t Following CooXDivation comprends M₂₂ [Cr CH₂U) (CN)x] [M(NH3)3B [Mn (HD)₂ ((₂0)₂ Isonization splere coordination sphere CENTRal intal Ich Lyses slence لا سال UslesceSAIC Ex7.2 Give formulas for a) chloridopentaamminecobalt(III) chloride, b) hexaaquarion(3+) nitrate, c) cis-dichloridobis(ethylenediamine)-ruthenium(II), d) u -hydroxidobis(penta-amminechromium(III) chloride.
- flouroquinolones like ciprofloxacin are antibiotics with broad antibacterial spectrum widely used nowadays to treat bacterial infections. unfortunately, they form water insoluble complexes in the GIT when taken orally together with divalent metal supplements like zinc and iron as sulfate salts respectively [ both in the second oxidation state ] a. draw the structure of the resulted metals complexes with ciprofloxacin b. expect the electronic configuration showing the complexation orbitals and sharing for each metal case c. how many coordination covalent bond are expected form such complexation and the type of hybridization expected d. what would be the influence of such complexation on the bioavailability of both the metals and the antibiotic e. which functional groups in the ciprofloxacin structure are expected to be the ligands in the resulted complexes. f. which type of chelating agent ciprofloxacine would be expected in these cases.How many delectrons (nof dn) are in the central metal ion in (a) [Ru(NH3)5Cl]SO4; (b) Na2[Os(CN)6];(c) [Co(NH3)4CO3I]?Cis-diamminedichloroplatinum (II) or “cisplatin” is a square planar complex with the formula [Pt(NH3)2Cl2]. Cisplatin is an anticancer drug that works by bonding to two adjacent guanine bases on the same strand of DNA, creating a kink which disrupts DNA replication. Each bond to a guanine base is formed by displacing one Cl ligand on cisplatin. The closely related complex trans-diamminedichloroplatinum (II) is completely ineffective as an anticancer agent. Explain why.