The new tripodal ligand tris-[3-(2'-pyridyl)pyrazol-l -yl]hydroborate (L-), comprising three N,N-bidentate chelating arms linked by the apical boron atom, has been synthesized; the crystal structure of [EuL(MeOH),F][PF6I reveals the nine-coordinate metal lying within the hexadentate ligand cavity.
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