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ORTEP representation of title complex (SN1,RN2/SN1i,RN2i-isomer) with the atom numbering scheme. Displacement ellipsoids are presented at 30% probability level. H atoms are shown as small spheres of arbitrary radius. Intramolecular N···Bi and O···Bi interactions are drawn by dashed lines. Symmetry code: (i) 2-x, y, 1/2-z.
