The compound consists of [ReCI20(CzHsO)(C7H6-N2){P(C6Hs)3}] monomers in which the Re v centre has slightly distorted octahedral coordination. The azaindole (1H-pyrrolo[2,3-b]pyridine) and the phosphine ligands occupy trans positions, whereas the perpendicular ReClzO(OR) plane contains a trans O==Re---OR unit. Azaindole forms a bifurcated intramolecular hydrogen bond with the oxo group and a CI atom.
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