6533b7d4fe1ef96bd1262752
RESEARCH PRODUCT
Structural chemistry of complexes of ( ? 1)d s metal ions with ?-N-donor substituted thiolate ligands (=0, 2)
Holger Fleischersubject
Ligand field theoryStereochemistryMetal ions in aqueous solutionSquare pyramidal molecular geometryIonInorganic ChemistryMetalTrigonal bipyramidal molecular geometrychemistry.chemical_compoundCrystallographychemistryvisual_artPyridineMaterials Chemistryvisual_art.visual_art_mediumTransition metal thiolate complexPhysical and Theoretical Chemistrydescription
Abstract The molecular structures of several d 10 metal ion complexes with 2-amino or 2-imino substituted thiolate ligands, derived from 2-aminoethanethiol, 2-(mercaptomethyl)pyridine, 2-aminobenzenethiole, and 8-mercaptoquinoline, are presented. Since ligand field stabilization energy is absent, the complexes display a large variety of co-ordination numbers and geometries around the metal centers. Distortions from ideal tetrahedral or trigonal bipyramidal configurations are discussed in terms of special structural parameters. In contrast to thiolate ligands that lack additional donor atoms and thus form oligo- or poly-nuclear complexes, the β-N donor group stabilizes mono-nuclear complexes in many cases. In that respect, the number of donor atoms available per metal centre is decisive. Due to its importance for biological systems as compared to the other elements dealt with in this review, there are many more structurally characterized complexes with N,S-donor ligands for Zn 2+ than for any other d 10 ion. Significant structural differences concerning co-ordination number and structural parameters occur between Zn 2+ on one hand and Cd 2+ /Hg 2+ complexes on the other. With tetraco-ordinate d 10 s 2 ions pseudo trigonal bipyramidal structures occur as well as pseudo square pyramidal structures.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2005-04-01 | Coordination Chemistry Reviews |