Synthesis, Characterization and Electrochemistry of Heterobimetallic Complexes Containing Molybdenum(ii) Nitrosyl and Manganese(ii)-schiff Base Centers

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Date
2010Author
Odhiambo, R.
Muthakia, G. K.
Kagwanja, S. M.
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Show full item recordAbstract
New complexes derived from the reaction of Mo(NO)T
p
*
Cl
2
; T
p
*
= tris(3,5-dimethylpyrazolyl)
borate with a series of manganese(II) Schiff bases
have been synthesized. Characterization by UV, IR,
MS and
elemental analysis support their formulations. Cycl
ic and differential pulse voltammograms of manganes
e(II)
Schiff base monometallic complexes exhibit one redu
ction peak which may be associated with the reducti
on of
the manganese(II) center. In CH
3
CN solutions, the molybdenum(II)-manganese(II) bime
tallic complexes showed
two reversible reduction peaks which are associated
with the reduction of the molybdenum and manganese
centers. In CH
2
Cl
2
, only the reduction of molybdenum(II) center exhib
ited reversibility while the reduction of
manganese(II) center was irreversible. These observ
ations demonstrate that reduction potentials for bi
metallic
complexes are solvent dependent.