The reaction between N, N-dimethylpropargylamine (DMPA) and a Ni(II) complex Ni(NCS)(2)(PPh(3))(2), leads to the formation of a pi-conjugated polymer (PDMPA) and to the interaction of the nickel atom of the complex with the nitrogen atoms of the pendent groups; a polymer-metal complex, PDMPA-Ni(II), is obtained. Reactions have been carried out using various complex/monomer molar ratios: the yield of the reaction and the nickel content of the polymer-metal complexes increase by increasing the amount of Ni(NCS)(2)(PPh(3))(2). Reactions of DMPA with a Rh(I) complex have also been studied for comparison; this catalyst induces only the linear polymerization of the monomer. The structure of PDMPA and of its complexes with Ni(II) has been studied by means of infra-red, nuclear magnetic resonance and X-ray photoelectron spectroscopies; a change in the stereochemistry of nickel, passing from Ni(NCS)(2)(PPh(3))(2) to the PDMPA-Ni(II) complexes, has been demonstrated.
Russo, M.v., Iucci, G., Furlani, A., Polzonetti, G. (1995). Poly(N,N-dimethylpropargylamine): a pi-conjugated polymer as macromolecular ligand. POLYMER, 36, 4867-4875 [10.1016/00323-8619(59)9304D-].
Poly(N,N-dimethylpropargylamine): a pi-conjugated polymer as macromolecular ligand
IUCCI, GIOVANNA;
1995-01-01
Abstract
The reaction between N, N-dimethylpropargylamine (DMPA) and a Ni(II) complex Ni(NCS)(2)(PPh(3))(2), leads to the formation of a pi-conjugated polymer (PDMPA) and to the interaction of the nickel atom of the complex with the nitrogen atoms of the pendent groups; a polymer-metal complex, PDMPA-Ni(II), is obtained. Reactions have been carried out using various complex/monomer molar ratios: the yield of the reaction and the nickel content of the polymer-metal complexes increase by increasing the amount of Ni(NCS)(2)(PPh(3))(2). Reactions of DMPA with a Rh(I) complex have also been studied for comparison; this catalyst induces only the linear polymerization of the monomer. The structure of PDMPA and of its complexes with Ni(II) has been studied by means of infra-red, nuclear magnetic resonance and X-ray photoelectron spectroscopies; a change in the stereochemistry of nickel, passing from Ni(NCS)(2)(PPh(3))(2) to the PDMPA-Ni(II) complexes, has been demonstrated.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
