Metais de Transição e Complexos

Prévia do material em texto

518 Chapter 25 Transition Metals and Coordination Compounds Name the metal ion: Cu²⁺ is cuprate(II) because the complex is an anion. Name the complex ion by adding the prefix to indicate the number of each ligand, followed by the name of each ligand and the name of the metal ion: tetracyanocuprate(II) ion. (c) is pentaamminebromoiron(II) sulfate. is a complex cation, is sulfate. Name the ligands in alphabetical order: NH₃ is ammine; Br⁻ is bromo. Name the metal cation: Fe³⁺ is iron(III). Name the complex ion by adding prefixes to indicate the number of each ligand, followed by the name of the ligand and the name of the metal ion: pentaamminebromoiron(II). Name the compound by writing the name of the cation before the anion. The only space is between the ion names: pentaamminebromoiron(II) sulfate. (d) is chloride. is a complex cation; is chloride. Name the ligands in alphabetical order: NH₃ is ammine; H₂O is aqua; OH⁻ is hydroxo. Name the metal cation: Co³⁺ is cobalt(III). Name the complex ion by adding prefixes to indicate the number of each ligand, followed by the name of the ligand and the metal ion: Name the compound by writing the name of the cation before the anion. The only space is between the ion names: chloride. 25.25 (a) Hexaamminechromium(III) is a complex ion with Cr³⁺ metal ion and six NH₃ ligands. (b) Potassium is a compound with 3 cations and a complex anion with Fe³⁺ metal ion and six ligands. (c) is a compound with a Cu²⁺ metal ion, an ethylenediamine ligand, and two ligands. (d) is a complex compound with a complex cation that contains a Pt²⁺ metal ion, four H₂O ligands, and a complex anion that contains a Pt⁴⁺ metal ion and six ligands. 25.27 (a) is (b) Because ethylenediamine is a bidentate ligand, you need three to have a coordination number of 6. is ion. Structure and Isomerism 25.29 In linkage isomers, the ligand coordinates to the metal in different ways. NH₃ Mn Mn H3N NH₃ N NH₃ N ion ion 25.31 Coordination isomers occur when a coordinated ligand exchanges places with the uncoordinated counterion. pentaaquachloroiron(II) chloride monohydrate [Fe(H₂O)₄Cl₂] tetraaquadichloroiron(II) dihydrate 25.33 Geometric isomers result when the ligands bonded to the metal have a different spatial arrangement. (a) No, an octahedral complex must have at least two different ligands to have geometric isomers. (b) Yes, there will be cis-trans isomers. (c) Yes, there will be fac-mer isomers. (d) No, a square planar complex must have at least two different ligands to have geometric isomers. (e) Yes, there will be cis-trans isomers. Copyright © 2017 Pearson Education, Inc.