Gold(I) and Gold(III) complexes of the [CH(dppm)2]+ and C(dppm)2 PCP pincer ligand systems
| Autor: | Paul Peringer, Inge Hackl, Klaus Wurst, Holger Kopacka, Walter Schuh, Christian Reitsamer |
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| Rok vydání: | 2017 |
| Předmět: |
Trigonal planar molecular geometry
010405 organic chemistry Ligand Chemistry Organic Chemistry Nuclear magnetic resonance spectroscopy Crystal structure 010402 general chemistry 01 natural sciences Biochemistry 0104 chemical sciences Pincer movement Inorganic Chemistry Crystallography Materials Chemistry Chelation Physical and Theoretical Chemistry Pincer ligand Coordination geometry |
| Zdroj: | Journal of Organometallic Chemistry. 830:150-154 |
| ISSN: | 0022-328X |
| DOI: | 10.1016/j.jorganchem.2016.12.024 |
| Popis: | Gold(III) complexes of the PCP pincer carbodiphosphorane (CDP) ligand C(dppm)2 and gold(I) complexes of the conjugate CH acid [CH(dppm)2]+ were synthesized and characterized by single crystal diffraction and by NMR spectroscopy. The gold(I) complex [AuCl(CH(dppm)2)-κ2P,P′]Cl (1) exhibits an approximate trigonal planar AuClP2 core, whereas the gold center in the [Au(CH(dppm)2)-κ2P,P′)](TfO)2 complex (2) is only two-coordinated (P(1)-Au(1)-P(4) around 167.3°). Both complexes show no significant interaction between the gold(I) and the CDP carbon and consequently, an eight membered chelate ring is observed. [AuI(C(dppm)2)-κ3P,C,P′)](TfO)2 (3) and [AuCl(C(dppm)2)-κ3P,C,P′)](NO3)2 (4) were obtained via oxidation of complex 1 or 2 with iodine or nitric acid, respectively. The gold(III) center is stabilized in a square planar coordination geometry by two dppm units, the divalent carbon(0) atom of the C(dppm)2 ligand system, and a halide ion. |
| Databáze: | OpenAIRE |
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