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Crystal structures of two isotypic lanthanide(III) complexes: tri-aqua-[2,6-di-acetyl-pyridine bis-(benzoyl-hydrazone)]methano-llanthanide(III) trichloride methanol disolvates (LnIII = Tb and Dy).

ABSTRACT: The title lanthanide complexes, [Ln(DAPBH2)(CH3OH)(H2O)3]Cl3·2CH3OH [LnIII = Tb and Dy; DAPBH2 = 2,6-di-acetyl-pyridine bis-(benzoyl-hydrazone), C23H21N5O2], are isotypic. The central lanthanide ions are nine-coordinate, being ligated by three N and two O atoms from the penta-dentate DAPBH2 ligand, and four O atoms from the coordinated methanol mol-ecule and three coordinated water mol-ecules. The coordination geometry of the lanthanide ion is a distorted capped square anti-prism. In the crystals, the various components are linked by O-H⋯Cl, N-H⋯Cl and O-H⋯O hydrogen bonds, forming three-dimensional supra-molecular frameworks. Within the frameworks, there are C-H⋯Cl and C-H⋯O hydrogen bonds and offset π-π inter-actions (inter-centroid distance ca 3.81 Å).

SUBMITTER: Kachi-Terajima C

PROVIDER: S-EPMC5946983 | biostudies-literature |

REPOSITORIES: biostudies-literature

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