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Nomenclature

무기소재연구실. Nomenclature. 201450097 김 대 영. Contents. Nomenclature of inorganic chemistry Common ligands name Nomenclature rules Naming of organometallic compound. 1. Nomenclature of inorganic chemistry. Single atom anions are named with an -ide suffix: ex) H - hydride

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Nomenclature

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  1. 무기소재연구실 Nomenclature 201450097김 대 영

  2. Contents • Nomenclature of inorganic chemistry • Common ligands name • Nomenclature rules • Naming of organometallic compound

  3. 1. Nomenclature of inorganic chemistry • Single atom anions are named with an -ide suffix: ex) H- hydride O2- oxide Cl- chloride • 2) The name of cation compounds is simply the • cation's name, followed by the anion. • ex) NaCl sodium chloride • CaF2 calcium fluoride.

  4. 1. Nomenclature of inorganic chemistry 3) Cations able to take on more than one positive charge are labeled with Roman numerals in parentheses ex) Cu+ copper(I) Cu2+ copper(II) cf. It is still common to see and use the endings -ous or -ic. These endings are added to the Latin name of the element to represent the ions with lesser or greater charge, respectively. ex) Fe2+ Ferrous Fe3+ Ferric Cu+ Cuprous Cu2+ Cupric Sn2+ Stannous Sn4+ Stannic

  5. 1. Nomenclature of inorganic chemistry 4) Oxyanions (polyatomic anions containing oxygen) are named with -ite or -ate, for a lesser or greater quantity of oxygen. ex) NO2- nitrite NO3- nitrate. SO42- sulfate PO43- phosphate CO32- carbonate CrO42- chromate cf. One oxyanion = the prefixes hypo- are used Four oxyanions = the prefixes per- are used. ex) ClO-hypochlorite ClO2- chlorite ClO3- chlorate ClO4-perchlorate

  6. 2. Common ligands name 1) Monodentate ligands

  7. 2. Common ligands name 1) Monodentate ligands

  8. 2. Common ligands name 2) Common Chelating Amines

  9. 2. Common ligands name 2) Common Chelating Amines

  10. 2. Common ligands name 3) Commen Multidentate Ligands

  11. 3. Nomenclature rules 1) The positive ion comes first, followed by the negative ion. ex) [Ag(NH3)2]Cl diamminesilver(Ⅰ) chloride K3[Fe(CN)6] potassium hexacyanoferrate(Ⅲ) 2) The inner coordination sphere is enclosed in square brackets in the formula. Within the coordination sphere, the ligands are named before the metal, but in formulas the metal ion is written first. ex) [Cu(NH3)4]SO4 tetraamminecopper(Ⅱ) sulfate, [Co(NH3)6]Cl3 hexaamminecobalt(Ⅲ) chloride,

  12. 3. Nomenclature rules 3) The number of ligands of one kind is given by the following prefix. If the ligand name includes these prefixes or is complicated, it is set off in parentheses and the second set of prefixes is used. ex) [Fe(NH4C5-C5H4N)3]2+ Tris(bipyridine)iron(Ⅱ) [Co(NH2CH2CH2NH2)2Cl2]+ Dichlorobis(ethylenediamine)cobalt(Ⅲ)

  13. 3. Nomenclature rules 4) Ligands are named in alphabetical order. An earlier rule gave anionic ligands first, then neutral ligands, each listed alphabetically. ex) [Co(NH3)4Cl2]+ tetraamminedichlorocobalt(Ⅲ) Pt(NH3)BrCl(CH3NH2) amminebromochloromethylamineplatinum(Ⅱ) 5) Anionic ligands are given an o suffix. Neutral ligands retain their usual name. Coordinated water is called aqua and coordinated ammonia is called ammine. ex) Cl- chlro, SO42- sulfato, H2O aqua, NH3 ammine

  14. 3. Nomenclature rules 6. Two systems exist for designating charge or oxidation number. a. Stock system : puts the calculated oxidation number of the metal ion as a Roman numeral in parentheses after the name of the metal. b. Ewing-Bassett system : puts the charge on the coordination sphere in parentheses after the name of the metal. If the charge is negative, the suffix –ate is added to the name of the coordination sphere. Ex) [Pt(NH3)4]2+ tetraammineplatinum(Ⅱ) tetraammineplatinum(2+) [PtCl4]2- tetrachloroplatinate(Ⅱ) tetrachloroplatinate(2-) [PtCl6]2- hexachloroplatinate(Ⅳ) hexachloroplatinate(2-)

  15. 3. Nomenclature rules 7) The prefixes cis- and trans- designate adjacent and opposite geometric locations. ex) cis- tetraamminedichlorocobalt(Ⅲ) trans- tetraamminedichlorocobalt(Ⅲ)

  16. 3. Nomenclature rules 8) Bridging ligands between two metal ions have the prefix μ-. ex) [Co(Co(NH3)4(OH)2)3]6+ tris(tetraammine-μ-dihyroxocobalt)cobalt(6+),

  17. 3. Nomenclature rules 9) When the complex is negatively charged, the names for the following metals are derived from the sources of their symbols. ex) [FeCl4]- tetrachloroferrate(Ⅲ) [Au(CN)2]- dicyanoaurate(Ⅰ)

  18. 3. Nomenclature rules

  19. 4. Naming of organometallic compound • Organometallic compound ? • - The study of chemical compounds containing bonds • between carbon and a metal

  20. 4. Naming of organometallic compound 2) Common organic ligands

  21. 4. Naming of organometallic compound 3) Nomenclature of organometallic compound ① Metal carbon single bond - Organic anions are named by replacing the final -e of the parent compound name by –ide - The suffix –ide is then replaced by –ido upon coordination of the ligand - Now, organic ligand names are allowed. ex) [OsEt(NH3)5]Cl pentaammine(ethyl)osmium(Ⅰ) chloride methane methanide methanido

  22. 4. Naming of organometallic compound 3) Nomenclature of organometallic compound ② Bridging ligand-Mu, μ Ligands may bridge two or more centers. The prefix μ is used to specify a bridging ligand in both the formula and the name.

  23. 4. Naming of organometallic compound 3) Nomenclature of organometallic compound ② Bridging ligand-Mu, μ ex) (μ-ethane-1,1-diyl)bis(pentacarbonylrhenium) (μ-ethane-1,2-diyl)bis(tetracarbonylosmium(Os-Os)

  24. 4. Naming of organometallic compound 3) Nomenclature of organometallic compound ③ Eta, η The use of η to denote hapticity is systematised. When the specification of the atoms involved is ambiguous the position of the atoms must be specified.

  25. 4. Naming of organometallic compound 3) Nomenclature of organometallic compound ③ Eta, η ex) (η3-Allyl)-(η4-butadiene)-(η5-cyclopentadienyl)-molybdenum(Ⅱ) dicarbonyl(η3-cyclopentadienyl)(η5-cyclopentadienyl)tungsten

  26. 4. Naming of organometallic compound 3) Nomenclature of organometallic compound ③ Kappa, κ These symbols are placed after the portion of ligand name that represents the ring, chain, or substituent group in which the ligating atom is found ex) pentaamminenitrito-κO-colat(Ⅱ) dibromo[ethane-1,2-diylbis(dimethylphosphane-κP )]nickel(Ⅱ)

  27. Reference • Gary L, Miessler, Donald A. Tarr, 2004, Inorganic Chemistry third edition, Pearson Education, • Chemical nomenclature, K.J Thurlow, 1998 • Nomenclature of inorganic chemistry IUPAC recommendation 2005

  28. Thank you

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