Hetero-bimetallic complexes involving vanadium(V) and rhenium(VII) centers, connected by unsupported mu-oxido bridge: synthesis, characterization, and redox study

Inorganic Chemistry
Pabitra Baran ChatterjeeMuktimoy Chaudhury

Abstract

Heterobimetallic complexes of a vanadium(V) and rhenium(VII) combination connected by a mu-oxido bridge [LVO(mu-O)ReO 3].H 2O [H 2L = N, N'-ethylene bis(salicylideneimine) (H 2salen) and its methoxy derivative] ( 1, 2) are reported. The compounds have been prepared by a single-pot synthesis in which the precursor [V (IV)OL] complexes are allowed to be oxidized aerially in the presence of added perrhenate. The oxidized [V (V)OL] (+) species accommodate the ReO 4 (-) anion in their vacant coordination site, trans to the terminal oxido group, providing the complexes 1 and 2. The later generates a binuclear oxovanadium(V) compound [H 2en][(TBC)VO(mu-TBC) 2OV(TBC)].5H 2O ( 3) when treated with tetrabromocatechol. Single crystal X-ray diffraction analysis and (1)H NMR spectroscopy have been used to establish their identities. In compound 2, the Re(1)-O(11)-V(1) bridge angle is barely linear [170.2(3) degrees ] with a Re...V separation of 3.9647(9) A. The redox behavior of 1 and 2 are quite interesting, each undergoing two reductions both in the positive potential range at E 1/2 = 0.59 (process I) and E 1/2 = 0.16 V (process II) versus Ag/AgCl reference (corresponding potentials are 0.59 and 0.18 V for 2). Process I has a single-elect...Continue Reading

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Jun 15, 2007·Inorganic Chemistry·Pabitra Baran ChatterjeeMuktimoy Chaudhury
Apr 12, 2008·Inorganic Chemistry·Pabitra Baran ChatterjeeMuktimoy Chaudhury
Jan 5, 2001·Angewandte Chemie·Anna S GardbergJames A Ibers

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Citations

Jul 5, 2012·Inorganic Chemistry·Kisholoy BhattacharyaMuktimoy Chaudhury
Nov 10, 2017·Dalton Transactions : an International Journal of Inorganic Chemistry·Hajar MolaeeMozhgan Samandar Sangari
Nov 19, 2009·Dalton Transactions : an International Journal of Inorganic Chemistry·Isabel S GonçalvesCarlos C Romão
Oct 23, 2010·Journal of the American Chemical Society·Pabitra Baran ChatterjeeMuktimoy Chaudhury
Oct 6, 2021·Dalton Transactions : an International Journal of Inorganic Chemistry·S Masoud NabavizadehMahdi M Abu-Omar

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