Structure and Spectroelectrochemistry (UV/Vis, IR, EPR) of the Acceptor-Bridged Heterodinuclear Complex (h5-C5Me5)ClRh(m-bptz)Re(CO)3Cl(PF6), bptz = 3,6-Bis(2-pyridyl)-1,2,4,5-tetrazine

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Organometallics, 20 (7): 1437--1441 (2001)
DOI: 10.1021/om000892b


(h5-C5Me5)ClRh(m-bptz)Re(CO)3Cl(PF6) bptz = 3,6-Bis(2-pyridyl)-1,2,4,5-tetrazine contains two organometallic reaction centers which are known to engage in hydride transfer catalysis (Rh) or in CO2 activation (Re), each after reductive elimination of the resp. chloride ligand. The bridged heterodinuclear compd. was prepd. and structurally characterized in the form where the chloride ligands are in cis-configuration relative to the bptz plane. The complex was subjected to cyclic voltammetry and spectroelectrochem. redn. to reveal an electrochem. reversible 1-electron uptake by the bptz bridge, a Rh chloride-dissociative 2nd redn. to yield neutral (h5-C5Me5)Rh(m-bptz)Re(CO)3Cl, and a quasi-reversible 3rd 1-electron redn. on SciFinder(R)



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