1C_Lecture_16

1C_Lecture_16 - Coordination Compounds Complex Ion A...

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Chapter 19: Transition Metals and Coordination Chemistry Coordination Compounds Complex Ion: A charged species consisting of a metal ion surrounded by ligands. Ligand: A group attached to a central metal ion in a complex. 1 Central grey atom is transition metal. Colored atoms ligands. # # # # Examples: [Fe(H 2 O) 6 ] 3+ [CoCl 4 ] 2- [NiBr 4 ] 2- [Ag(NH 3 )] + Note: Complex ions do not dissociate in solution. Note: Complex ions are written inside brackets. If ligands are bound to a metal but the species formed is not am ion the system is still written in brackets ex: [Hg(CH 3 ) 2 ].
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Chapter 19: Transition Metals and Coordination Chemistry Coordination Compounds Chelate: A complex containing at least one polydentate ligand that forms a ring of atoms. 2 Formula Name H 2 O Aqua NH 3 Ammine Br - Bromo Cl - Chloro CN - Cyano NH 2 CH 2 CH 2 NH 2 Ethylenediamine (en) OH - Hydroxo I - Iodo CH 3 NH 2 Methylamine NO 2 - Nitrato NO - Nitrosyl C 2 O 4 2- Oxalato (ox) SO 4 2- Sulfato SCN - Thiocyanto Note: Bidentate ligands form 2 bonds to the metal ion.
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1C_Lecture_16 - Coordination Compounds Complex Ion A...

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