Synthesis, coordination chemistry, and metal complex reactivity of (dimethylamino)methyl-substituted triarylphosphanes; X-ray study on [AuCl(PPh3−nArn)] (Ar=1-C6H3(CH2NMe2)2-3,5, n=1, 3; Ar=1-C6H4(CH2NMe2)-4, n=3)
| Autor: | Kreiter, R., Firet, J.J., Ruts, M.J.J., Lutz, M., Spek, A.L., Klein Gebbink, R.J.M., van Koten, G., Homogene katalyse en materialen, R¿ntgenparticipatieprogramma, Dep Scheikunde |
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| Rok vydání: | 2006 |
| Předmět: |
Tris
chemistry.chemical_classification Stereochemistry Organic Chemistry Protonation Alkylation Biochemistry Medicinal chemistry Coordination complex Inorganic Chemistry Metal chemistry.chemical_compound Benzyl bromide chemistry Gold Compounds International (English) visual_art Materials Chemistry visual_art.visual_art_medium Amine gas treating Physical and Theoretical Chemistry |
| Zdroj: | Journal of Organometallic Chemistry, 691, 422. Elsevier |
| ISSN: | 0022-328X |
| DOI: | 10.1016/j.jorganchem.2005.09.009 |
| Popis: | The synthesis of the first series of 4-mono and 3,5-bis(dimethylamino)methyl-functionalized triarylphosphanes of the general formula PPh 3 − n Ar n (Ar = 1-C 6 H 3 (CH 2 NMe 2 ) 2 -3,5 (NC(H)N), n = 1 (ligand 2 ) or n = 3 (ligand 4 ); Ar = 1-C 6 H 4 (CH 2 NMe 2 )-4 (NC(H)), n = 3 (ligand 7 )) is described. These phosphanes were used for the construction of complexes of the form [AuCl(P)] and [PtCl 2 (P) 2 ]. In these complexes selective coordination of phosphorus to the metal ion is observed. The 31 P NMR data show the formation of cis -Pt complexes, even in the case of triarylphosphane 4 , which features a tris{3,5-bis(dimethylamino)methyl} substitution pattern. The structure of the gold complex of mono-3,5-functionalized triarylphosphane 2 in the solid state shows a striking resemblance to the structure of the corresponding complex [AuCl(PPh 3 )]. The solid-state structure of the AuCl complex of tris-4-functionalized ligand 7 differs from that of [AuCl(PPh 3 )] in the sign of the torsion angles. The amine functionalities in this class of gold compounds could be reacted selectively with either acid (HCl, H 3 PO 4 ) to generate ammonium salts or with an alkylating agent (benzyl bromide) to afford benzyl ammonium salts, without the violation of the Au–P bond. |
| Databáze: | OpenAIRE |
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