Camphor-derived β-ketophosphine complexes of palladium(II) and platinum(II)

Autor:	David J. Cole-Hamilton, D. Andrew Knight, Domenico C. Cupertino
Rok vydání:	1990
Předmět:	chemistry.chemical_classification Ketone Denticity Bicyclic molecule Ligand Stereochemistry Dimer chemistry.chemical_element General Chemistry Medicinal chemistry chemistry.chemical_compound chemistry Chlorodiphenylphosphine Platinum Palladium
Zdroj:	J. Chem. Soc., Dalton Trans.. :3051-3054
ISSN:	1364-5447 0300-9246
DOI:	10.1039/dt9900003051
Popis:	Reaction of chlorodiphenylphosphine with the lithium enolate derived from the treatment of (1R)-endo-(+)-3-bromocamphor (camphor = bornan-2-one) with n-butyl-lithium gives (1R)-endo-(+)-3-diphenylphosphinocamphor (L). This new chiral β-ketophosphine ligand reacts with [Pd(CH3CN)2Cl2] to give trans-[PdL2Cl2], and in a 1 : 1 ratio to give the chloro-bridged dimer [{PdL(µ-Cl)Cl}2]. The ligand L reacts with [Pt(CH3CN)2Cl2] to give trans-[PtL2Cl2]. Thermolysis of [ML2Cl2](M = Pd or Pt) in refluxing xylene gives mixed phosphine–phosphinite complexes with mutually cis chlorides. The complex [PdL2Cl2] reacts with an excess of AgBF4 to give [PdL2][BF4]2 which is shown to contain bidentate binding through the phosphorus and keto-oxygen atoms. All complexes are characterised by i.r., 1H and 31P n.m.r. spectroscopy.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e9eff4708b44c1472612c6b13a4fefb7 https://doi.org/10.1039/dt9900003051 Zobrazit plný text záznamu