Electrochemical properties of (H5-C5Me5)-rhodium and – iridium complexes Bis(pyrazolyl)alkane ligands

Martins, Luisa; Pettinari, Claudio; Marchetti, Fábio; Alegria, Elisabete; Pombeiro, Armando

http://hdl.handle.net/10400.21/4938

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Authors

Martins, Luisa

Pettinari, Claudio

Marchetti, Fábio

Alegria, Elisabete

Pombeiro, Armando

Abstract(s)

The electrochemical properties of rhodium(III) 1-3 and iridium(III) 4-6 complexes containing bis(pyrazolyl)alkane ligands [MCp*Cl(R2C(3,5-R'2pz)2)]X (M = Rh (1) or Ir (4), R = R' = H, X = Cl; M = Rh (2) or Ir (5), R=H,R'=Me,X=Cl;M=Rh(3) or Ir (6), R=Me,R'=H,X=OTf;pz=pyrazolyl;Cp*=η5-C5Me5) were investigated by cyclic voltammetry and controlled potential electrolysis. They exhibit two sequential irreversible reductions assigned to the MIII → MII and MII → MI reductions, which are dependent on the methylation of the bis(pyrazolyl)alkane ligands.

Keywords

Bis(pyrazolyl)alkane Rhodium(III) and Iridium(III) Complexes Cyclic Voltammetry Controlled Potential Electrolysis

URI

http://hdl.handle.net/10400.21/4938

Citation

MARTINS, Luísa Margarida; [et al] – Electrochemical properties of (H5-C5Me5)-Rhodium and – Iridium complexes Bis(pyrazolyl)alkane ligands. Portugaliae Electrochimica Acta. ISSN: 1647-1571. Vol. 32, nr. 4 (2014), pp. 253-257