Synthesis and characterization of a platinum(II) complex of camphenylphosphonic acid

Molecular Metal Phosphonates

“…A similar binding mode is observed in the reaction involving ferrocene diphosphonic acid, except that in this case a dinuclear complex, [1,1′-Fc′{PO 3 Pt­(PPh 3 ) 2 } 2 ], is obtained (Figure b) . Reaction of cis -[PtCl 2 L 2 ] (L = PPh 3 ), endo-8-camphanyl-phosphonic acid (C 10 H 17 PO 3 H 2 ), and Ag 2 O also afforded a mononuclear Pt II complex, [Pt­(O 3 PC 10 H 17 )­(PPh 3 ) 2 ]·2CHCl 3 , where the phosphonate also binds in a chelating manner . In all of these instances, the preference of the Pt II center to have a square-planar coordination geometry seems to dictate the outcome of the product formation along with coordination response of the phosphonate ligand.…”

“…275 Reaction of cis-[PtCl 2 L 2 ] (L = PPh 3 ), endo-8-camphanyl-phosphonic acid (C 10 H 17 PO 3 H 2 ), and Ag 2 O also afforded a mononuclear Pt II complex, [Pt(O 3 PC 10 H 17 )-(PPh 3 ) 2 ]•2CHCl 3 , where the phosphonate also binds in a chelating manner. 276 In all of these instances, the preference of the Pt II center to have a square-planar coordination geometry 49 while in the heterometallic complexes the highest nuclearity observed is 32. 2 In the following sections, the synthesis and structure of various types of molecular Cu II phosphonates will be described.…”

“…Information on all molecular Pt II phosphonates is listed in Table . − Ferrocenemonophosphonic and diphosphonic acids have been utilized to prepare mono- and dinuclear platinum phosphonate complexes . The reaction of ferrocenephosphonic acid and cis -[PtCl 2 (PPh 3 ) 2 ] in the presence of excess Ag 2 O afforded [FcCH 2 PO 3 Pt­(PPh 3 ) 2 ].…”