Abstract

full title:Cyclometallated platinum(II) complexes containing the chiral ligand [2-(diphenyl-phosphanyl)-benzylidene]-(1-phenyl-ethyl)-amine: Synthesis and molecular structures of the compounds [PtCl(Me){?2-(R)-Ph2P(C6H 4)CH{double bond, long}NCH(Ph)Me-P,N}] and [Pt{?3-(S)-Ph2P(C6H4)C H{double bond, long}NCH(C6H4)Me-P,N,C}Py]BF4 Diastoreoisomeric mixtures of the complex [PtIMe3{?2-Ph2P(C6 H4)CH{double bond, long}NCH(Ph)Me-P,N}] (Rc-1) react with AgBF4 and SMePh to give a mixture of complexes [PtMe(SMePh){?2-Ph2P(C6H 4)CH{double bond, long}NCH(Ph)Me-P,N}]BF4 (2) and [Pt{?3-Ph2P(C6H4) CH{double bond, long}NCH(C6H4)Me-P,N,C}(PhSMe)]BF4 (3) which subsequently render the corresponding chloride compounds [PtClMe{?2-(R)-Ph2P(C6H 4)CH{double bond, long}NCH(Ph)Me-P,N}] (4) and [PtCl{?3-(R)-Ph2P(C6H4 )CH{double bond, long}NCH(C6H4)Me-P,N,C}] (5), by elution with CH2Cl2 on a aluminium oxide chromatography column. Refluxing of [PtIMe3{?2-Ph2P(C6H 4)CH{double bond, long}NC*H(Ph)Me-P,N}] (Sc-1) with AgBF4 in a 1:1, CH2Cl2:Me2CO mixture followed by the addition of SMePh, NCMe or pyridine (Py) affords the corresponding cyclometallated compounds [Pt{?3-(S)-Ph2P(C6H4)C H{double bond, long}NCH(C6H4)Me-P,N,C}(L)]BF4 [L = SMePh (3), NCMe (9), Py (10)]. These compounds have been characterised by analytical and spectroscopic means and by the molecular structure determination of complexes 4 and 10. © 2007 Elsevier B.V. All rights reserved.