Abstract
The synthesis of imidorhenium(V) [Re(NAr)Cl3(L)] complexes is reported. Their reaction with dilute HNO3 furnishes [Re(NAr)Cl3(L′)] species incorporating monoionized iminoamide ligands (the ligands are abbreviated as L and L′ respectively). The iminoamide complexes exhibit sextet EPR spectra in CH2Cl2 solution at room temperature. They are electroactive in MeCN solution and to display two quasi reversible responses near 0.2 and 1.6 V which can be attributed to ReV→ReVI and ReVI → ReVII oxidations respectively. One of the [Re(NAr)Cl3(L)] complexes has been structurally characterized. The trans influence of the amide nitrogen considerably lengthens the Re–N bond lying trans to the imido group. The triply bonded ReN–C moiety is linear.
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