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Related Experiment Video

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Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of Phosphorus(I)
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Published on: November 22, 2016

Terbium(III) hydrogendiphosphate(V) tetra-hydrate.

Karla Fejfarová, Rachid Essehli, Brahim El Bali

    Acta Crystallographica. Section E, Structure Reports Online
    |January 5, 2011
    PubMed
    Summary

    The crystal structure of terbium(III) hydrogen pyrophosphate tetrahydrate (TbHP(2)O(7)·4H(2)O) reveals a 3D network. This network is formed by TbO(8) polyhedra linked by pyrophosphate anions and stabilized by hydrogen bonds.

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    The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes

    Published on: April 10, 2015

    Area of Science:

    • Inorganic Chemistry
    • Crystal Engineering
    • Materials Science

    Background:

    • Terbium compounds exhibit diverse coordination chemistries.
    • Pyrophosphate anions can act as versatile ligands in coordination polymers.
    • Understanding the structural motifs of rare-earth pyrophosphates is crucial for materials development.

    Purpose of the Study:

    • To elucidate the crystal structure of terbium(III) hydrogen pyrophosphate tetrahydrate.
    • To investigate the coordination environment of the terbium ion.
    • To analyze the role of pyrophosphate anions and water molecules in framework stabilization.

    Main Methods:

    • Single-crystal X-ray diffraction was employed to determine the atomic arrangement.
    • Coordination geometry around the terbium atom was analyzed.
    • Hydrogen bonding interactions were identified and characterized.

    Main Results:

    • The crystal structure of TbHP(2)O(7)·4H(2)O was successfully determined.
    • The terbium atom is eight-coordinated by oxygen atoms from three water molecules and five from HP(2)O(7) groups, forming TbO(8) polyhedra.
    • A three-dimensional network is constructed through the interconnection of TbO(8) polyhedra by pyrophosphate anions, with additional stabilization from O-H⋯O hydrogen bonds.

    Conclusions:

    • The study provides detailed structural insights into a novel terbium pyrophosphate hydrate.
    • The intricate network structure highlights the role of both pyrophosphate ligands and hydrogen bonding in stabilizing the framework.
    • The presence of uncoordinated water molecules in channels suggests potential for guest inclusion or ion exchange properties.