d the osidai Ithe following compleser ber of ch ele ed 34 (a) KalCo(CN),s] (b) Na CdBrl (c [Pt(en),)(CIO (d) [Co(en);(C00]* (e) NH[Cr(NH)2(NCS),] ((Cu(bipy);l]1 13.34 When transi ortho-p dinat these is ch nitra t, a Common Ligands in Coordination Chemistry for t acce ake ti- (Section 23.3) draw the Lewis structure and indicate if it can act ass monodentate ligand, a bidentate ligand, c to act as a ligand at all: (a) ethylamine, CH,CH NH (b) trìmethylphosphine, P(CH3)3, (c) carbonate, Co 23.27 For each of the following molecules c or polyatomic los or is likety (d) ethane, C,H,. 23.28 For each of the following polydentate ligands, determine the maximum number of coordination sites that the ligand can occupy on a single metal ion and (ii) the number and e of donor atoms in the ligand: (a) ethylenediamine (en), (b) bipyridine (bipy), (c) the oxalate anion (C,0), (d) the 2- ion of the porphine molecule (Figure 23.13), type Nome (e) [EDTA]. 23.29 Polydentate ligands can vary in the number of coa Chem nation positions they occupy. In each of the following, 23.35 identify the polydentate ligand present and indicate the probable number of coordination positions it occupies: (a) [Co(NH3)4(0-phen)]Cl3 (b) [Cr(C204)(H20)4]Br (c) [Ca(EDTA)]2- (d) [Zn(en)2](CIO4)2 3.30 Indicate the likely coordination number of the metal in 23 each of the following complexes: (a) [Rh(bipy),](NO3)3 Among them Go Figure those derived from ecule can coordina How many carbon atoms are there in porphine? How many have sp hybridization? How many have sp2 hybridization? Once porphine be nitrogens are disp Two important po ENH IN- Fe(II), and chloropi Figure 23.14 protein that con protein, one that Myoglobin is fou seals, whales, an cule of O2 per m ities. Hemoglob N: HN- Porphine blood, is made which is very sin to four O2 mole In both my FeRF to the four nitre from the prote position aroun globin, the brig purplish red fo HO. ОН Heme b Carbon n Н С, binding consta CHз greater than t CH3- CH3 CO can inacti N' blood by disp Mg. subunit. For N- 0.1% CO tak CH3 CH3 CH3 60% of the h CH3 CH3 blood's norm Under r НС ОС3З luted air has Chlorophyll a amount aris of CO in th A Figure 23.13 Porphine and two porphyrins, heme b and chlorophyll a. Fe(ll) and Mg(I1) ions replace the two blue H atoms in porphine and bond with all four nitrogens in heme b and chlorophyll a, respectively. small amou concentrati |