Three new heterobimetallic acetylene complexes CpNiCo (CO)(PPh) (PhCCH-R-p) [R =H(2), Br(3), COCH(4)] have been synthesized in suitable yield (31-47%) via the reaction of(PhCCH-R-p)CO(CO)PPhwith nic...Three new heterobimetallic acetylene complexes CpNiCo (CO)(PPh) (PhCCH-R-p) [R =H(2), Br(3), COCH(4)] have been synthesized in suitable yield (31-47%) via the reaction of(PhCCH-R-p)CO(CO)PPhwith nickelcene in n-octane. The complex CpNiCo(CO)(PhC) (1)has also been obtained in 12% by the reaction of (PhC) Co(CO)with nickelcene. The complexeshave been characterized by elemental analysis, IR andH NMR. Electrochemical study of redoxcouples of these complexes was presented by using cyclic voltammetry on Pt electrodes in acetone.At room temperature, all complexes underwent electrochemically reversible or guasi-reversible one-electron oxidation or reduction to the stable radicals. The radical anions of the complexes couldbe easily detected by ESR method in situ electrolysis in the THF solution. The isotropic parameters,Co= 2.20mT, <g> = 2.052 for the radical anion of complex 1, Co= 2.20 mT, p = 1.42 mT,展开更多
基金Project supported by the National Natural Science Foundation of China
文摘Three new heterobimetallic acetylene complexes CpNiCo (CO)(PPh) (PhCCH-R-p) [R =H(2), Br(3), COCH(4)] have been synthesized in suitable yield (31-47%) via the reaction of(PhCCH-R-p)CO(CO)PPhwith nickelcene in n-octane. The complex CpNiCo(CO)(PhC) (1)has also been obtained in 12% by the reaction of (PhC) Co(CO)with nickelcene. The complexeshave been characterized by elemental analysis, IR andH NMR. Electrochemical study of redoxcouples of these complexes was presented by using cyclic voltammetry on Pt electrodes in acetone.At room temperature, all complexes underwent electrochemically reversible or guasi-reversible one-electron oxidation or reduction to the stable radicals. The radical anions of the complexes couldbe easily detected by ESR method in situ electrolysis in the THF solution. The isotropic parameters,Co= 2.20mT, <g> = 2.052 for the radical anion of complex 1, Co= 2.20 mT, p = 1.42 mT,