374606-98-1Relevant academic research and scientific papers
Trifunctional phosphane ligands and their application in the synthesis of novel cage-structured platinacyclophanes and trinuclear chain-like platinacycles by self-assembly
Lindner, Ekkehard,Khanfar, Monther,Steimann, Manfred
, p. 2411 - 2419 (2007/10/03)
The synthesis of the 1,3,5-tris[(diphenylphosphoryl)alkyl]-benzenes 7-10 succeeds by reaction of the corresponding 1,3,5-tris(bromoalkyl)benzenes 3-6 with ethyl diphenylphosphinite in an Arbusov-type reaction. Reduction of these phosphane oxides leads to the trifunctional phosphane ligands 11-14. Their potency of self-assembly was examined by the employment of platinum(II) complex fragments. A five-component self-assembly consisting of 3 equiv, of the platinum complex Cl2Pt(NCPh)2 and 2 equiv, of the ligands 11-14 under high-dilution conditions led to the formation of the nanoscaled triplatinacyclophanes 1 and 15-17. Polymers were formed as by-products from the reactions between 11-13 and Cl2Pt(NCPh)2, whereas in the case of 14 three other platinacyles 18-20 with a chain-like structure were formed. The structures of the metallacycles 1 and 15-17 as well as 18-20 were elucidated by 31p{1H}, 13C{1H}, and 195Pt{1H} NMR spectroscopic investigations.
