新編文檔-CoordinationComplees-UniversityofSouthernIndiana配合物-印第安娜南部的大學(xué)-精品文檔

1、Coordination ComplexesChem 441: Inorganic ChemistryDr Jeff SeylerBeginning Principles Metal (neutral/charged) + Ligand Coordinatedative bonding, complex ions Oxidation State/Number Charge on metal and ligands d-orbitals and electron configuration Five d-orbitals, ns2(n-1)dx UV-vis absorption spectra

2、 d-d, M-L, and L-M transitions Ligand substitution kinetics Hard/soft and trans in fluenceNome nclature Ligand names Anions end with -o, chloride becomes chloro di, tri, tetra or bis, tris, tetrakis (if ligand has di) Alphabetical (not with prefix) tetraaminedichloro Metal charge Roman number Fe3+ a

3、s iron (III) Salts/ionic compounds, cation first, binary Cr(NH3)6CI3 hexaamminechromium (III) chloride Anionic metal complexes, metal-ate K3Fe(CN6) potassium hexacyanoferrate (III) others Bridging (p, mu) and hapticity (t|, eta)r|5-Cp2ZrCI2 |i-dichloro-di(r5-bis(cyclopentadienyl)zirconium(HI)Isomers

4、 Same formula, different connectivity two categories structural stereo four types coordination linkage geometric opticalCoordination sphere isomersHydration isomersCrCI3 6 H2OCr(H2O)6CI3 CrCI(H2O)5CI2 H2O CrCI2(H2O)4CI 2 H2Ovioletblue-gree ngree nIonization isomersPtCI2(NH3)4Br2PtBr2(NH3)4CI2Coordin

5、ation isomersLinkage isomersisothiocyano (thiocya natoN) thiocyano (thiocyanato-S)Others:nitro and nitrito or nitrito-N and nitrito-0 respectivelyLinkage Isomers nitro and nitrito IUPAC - nitrito-N and nitrito-O(a)Geometric Isomers cis/trans relation of two distinet ligands Square planar structures

6、Octahedral structures.NH3CL., IH3M I、NH3nh3Clh3n. I .nh3/Co、H3M I、NH3ClGeometric isomers fac/mer relation of three distinct ligands/ClNH3nh3ci_ ”NH3nh3HsH,.Co、 cK 、cifacialmeridionalOptical isomers Gen erally occur with tetrahedral (4 different groups) or octahedral having chelate ringsCommon Coordination Numbers CN.二 4 (four binding sites o