Chapter 24-Ligands

Chapter 24-Ligands - bi dentate can form two bonds : NH...

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Transition Metals Form  c o l o r f u l  complex ions [Ni(H O) ]SO
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Structure of Complex ions Coordination Sphere Co 3+ NH 3 Lewis base donates e- pair Lewis Acid accepts e- pair Coordinate Covalent Bond NH 3 NH 3 H 3 N H 3 N NH 3
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Structure of Complex Cpds Coordination Sphere Outer Sphere Ions [Co(NH 3 ) 6 ]Cl 3 (aq) [Co(NH 3 ) 6 ] 3+ (aq) + 3Cl - (aq) Dissolving
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Coordination Sphere [Co(NH 3 ) 6 ] 3+ [Ni(CN) 4 ] 2-
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Charge of Central ion [Co(NH 3 ) 6 ] 3+ Cl - [Cr(Cl) 6 ] 3- [Ni(CN) 6 ] 2- Cr 3+ Cu + Ni 4+
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Coodination Number - # of bonds formed between metal ion and ligands in complex ion. Coordination # Geometry linear 2 square planar tetrahedral 4
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Coodination Number - # of bonds formed between metal ion and ligands in complex ion. Coordination # Geometry 6 Octahedral
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Common Coordination # +1 ions +2 ions +3 ions Cu + 2, 4 Mn 2+ 4, 6 Sc 3+ 6 Ag + 2 Fe 2+ 6 Cr 3+ 6 Au + 2, 4 Co 2+ 4, 6 Co 3+ 6 Au 3+ 4
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Ligands Monodentate one bond formed to metal ion H 2 O, NH 3 , CN - , NO 2 - , OH - Chelating Ligands
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Unformatted text preview: bi dentate can form two bonds : NH 2-CH 2-CH 2-H 2 N : ethylenediamine (en) Ligands Monodentate one bond formed to metal ion H 2 O, NH 3 , CN-, NO 2-, OH-Chelating Ligands bi dentate can form two bonds : NH 2-CH 2-CH 2-H 2 N : ethylenediamine (en) Ligands Chelating Ligands bi dentate can form two bonds O O || ||-: O-C-C-O :-oxalato 2-(ox) .. .. .. .. : : : : : : ethylenediaminetetraacetate 4-(EDTA) Chelating Ligands hexadentate - six bonds formed EDTA Complex [Co(EDTA)]-Coordination number of Co 3+ is 6 Removes metals from the blood Cpd oxid. # coord # Na 4 [Ni(ox) 3 ] K 2 [CoCl 4 ] [Cu(NH 3 ) 4 ]SO 4 [Fe(NO2 ) 2 (en) 2 ] 2 SO 4 [Au(H 2 O) 2 ]NO 3 Ni Co 6 4 Cu 4 Fe 6 2...
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Chapter 24-Ligands - bi dentate can form two bonds : NH...

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