The ytterbium complex of isonicotinoyl hydrazone was synthesized and the structure was determined by X-ray diffraction analysis. The crystal and molecular structure of the title complex ［Yb2(L)3］(OH)3 shows that the complex has two identical nine-coordinated ytterbium ions with each surrounded by N3O6 donor set. Two ytterbium ions are bridged by three phenolate oxygen atoms. The geometry around each ytterbium ions can be considered as a three-capped trigonal prism.
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