Synthesis and Crystal and Molecular Structures of 1,3-Di-p-tolyl-5-(5'-allyl 2'-ethoxybenzyl)-1,3,5-diazaphosphacyclohexane Complexes with Ni(II) and Pt(II) Salts

The reaction of heterocyclic phosphine ligand, 1,3-di- p -tolyl-5-(5'-allyl-2'-ethoxybenzyl)-1,3-diaza-5-diazaphosphacyclohexane (L), containing a functional substituent at phosphorus, with (1,5-cyclooctadiene)dichloroplatinum(II) and nickel(II) chloride gave complexes PtCl 2 L 2 ( I ) and NiCl 2 L 2 ( II ), respectively, with the cis- and trans -configurations of the central ion. The structure of the complexes was determined by X-ray diffraction (CIF files CCDC no. 2097704 ( I ), 2097705 ( II )).