Substituent effects on the electrochemical behaviour of iron(II) in Schiff bases derived from ferrocene and their cyclopalladated compounds

被引:48
作者
Bosque, R [1 ]
Lopez, C [1 ]
Sales, J [1 ]
机构
[1] UNIV BARCELONA,DEPT QUIM INORGAN,E-08028 BARCELONA,SPAIN
关键词
electrochemistry; iron complexes; Schiff base complexes; ferrocene derivative complexes; cyclopalladate ligand complexes;
D O I
10.1016/0020-1693(95)04744-1
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Cyclic voltammetries of ferrocenylimines [(eta(5)-C5H5)Fe{(eta(5)-C5H4)-C(R(1))=N-R(2)}] (1-3) and [(eta(5)-C5H5)Fe{(eta(5)-C5H4)-(CH2)n-N=CH(C6H(5-x)R(x)(3))}] (4, 5), and bis(ferrocenyl)imine [(eta(5)-C5H5)Fe{(eta(5)-C5H4)-(CH2)(n)-N=C(R(4))(eta(5)-C5H4)}Fe(eta(5)-C5H5)] (6) are reported. The comparison of the half-wave potentials (E(1/2)) shows that the liability of iron(II) to undergo oxidation on the nature of the substituents. For their mono- and dinuclear cyclopalladated compounds, [Pd(C N)Cl(L)] and [Pd(C N)(mu-Cl)] 2, the E(1/2) values reveal that the formation of a sigma(Pd-C(sp(2), ferrocene)) bond favours the oxidation of the ferrocenyl moiety, while for compounds with a sigma(Pd-C(sp(2), phenyl)) bond the trend is the opposite.
引用
收藏
页码:141 / 145
页数:5
相关论文
共 21 条
  • [1] ASTRUC D, 1995, ELECT TRANSFER RADIC, pCH2
  • [2] ELECTROCHEMICAL CHARACTERIZATION OF SOME FERROCENYLCARBOXYLIC ACIDS
    BLOM, NF
    NEUSE, EW
    THOMAS, HG
    [J]. TRANSITION METAL CHEMISTRY, 1987, 12 (04) : 301 - 306
  • [3] BOSQUE R, 1994, J CHEM SOC DALTON, P474
  • [4] BOSQUE R, 1994, THESIS U BARCELONA S
  • [5] BROWN ER, 1986, PHYSICAL METHODS CHE, V4
  • [6] AUTOMATIC IR DROP CORRECTION FOR STUDIES OF ELECTROCHEMICAL SYSTEMS
    CASSOUX, P
    DARTIGUEPEYRON, R
    FABRE, PL
    DEMONTAUZON, D
    [J]. ELECTROCHIMICA ACTA, 1985, 30 (11) : 1485 - 1490
  • [7] GRITZNAR G, 1984, PURE APPL CHEM, V54, P461
  • [8] DOUBLE CYCLOPALLADATION OF N,N,N',N'-TETRAMETHYLFERROCENE-1,1'-DICARBOTHIOAMIDE
    HAMAMURA, K
    KITA, M
    NONOYAMA, M
    FUJITA, J
    [J]. JOURNAL OF ORGANOMETALLIC CHEMISTRY, 1993, 463 (1-2) : 169 - 177
  • [9] HANSCH C, 1978, SUBSTITUENT CONSTANT
  • [10] SUBSTITUENT EFFECTS IN CHRONOPOTENTIOMETRIC OXIDATION OF FERROCENES
    HOH, GL
    KLEINBERG, J
    MCEWEN, WE
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1961, 83 (19) : 3949 - &