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A recurrent Motive in the Supramolecular Assembly of Coordination Compounds with 2,6-bis(Benzimidazol-2-yl)piridine (Bzimpy) and Two Identical H-bond Acceptor Co-ligands: [Cd(Ac)2(Bzimpy)], [Zn(Ac)2(Bzimpy)]·H2O (Ac:acetato) and Related Compounds

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Abstract

We report the crystal structures of two novel coordination compounds with similar complex composition: [Cd(Ac)2(Bzimpy)] (I) and [Zn(Ac)2(Bzimpy)]·H2O (II). Both compounds are monomeric. Compound I consists of a Cd(II) center heptacoordinated with three N atoms from a Bzimpy molecule and four O atoms from two bidentate acetato molecules. Compound II consists of a Zn(II) center pentacoordinated with three N atoms from a Bzimpy molecule and two O atoms from two monodentate acetato molecules. A non-coordinated water molecule completes the formula. In addition, we highlight some common features in the supramolecular assembly of both compounds and with similar structures deposited in the version 5.33 of the CSD. This assembly occur through H-bridges and π–π offset stacked interactions, giving rise to the formation of what we call “directed ring” of two types: two molecular components 2Rd and three molecular components 3Rd. Structures are viewed as composed of well defined substructures in order to analyze them.

Graphical Abstract

The crystal structures of the title compounds are reported, highlighting similarities in the form of the 3-D construction of the crystal in a set of coordination compounds of transition metals containing one molecule of neutral, non-substituted Bzimpy ligand and two identical molecules of an H-bridge acceptor, non-strong H-bridge donor co-ligand.

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Acknowledgments

We would like to thank the Spanish Research Council (CSIC) for providing us with a free-of charge license to the CSD System. Also to FONCyT for Grant PME-01113 (XRD).

Conflict of interest

The authors declare that they have no conflict of interest.

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Authors and Affiliations

  1. Universidad Nacional de la Patagonia S.J.B. and Centro Nacional Patagónico, CONICET, Bvd. Alte. Brown 3700, (9120) Puerto Madryn, Chubut, Argentina

    Miguel A. Harvey & Sergio Baggio

  2. DQIAyQF / INQUIMAE-CONICET, FCEN, UBA. Ciudad Universitaria, Pab. II, Piso 3, C1428EHA, Buenos Aires, Argentina

    Sebastián A. Suárez & Fabio Doctorovich

Authors
  1. Miguel A. Harvey
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  2. Sergio Baggio
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  3. Sebastián A. Suárez
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  4. Fabio Doctorovich
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Correspondence to Sebastián A. Suárez.

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Harvey, M.A., Baggio, S., Suárez, S.A. et al. A recurrent Motive in the Supramolecular Assembly of Coordination Compounds with 2,6-bis(Benzimidazol-2-yl)piridine (Bzimpy) and Two Identical H-bond Acceptor Co-ligands: [Cd(Ac)2(Bzimpy)], [Zn(Ac)2(Bzimpy)]·H2O (Ac:acetato) and Related Compounds. J Chem Crystallogr 43, 275–281 (2013). https://doi.org/10.1007/s10870-013-0415-0

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  • DOI: https://doi.org/10.1007/s10870-013-0415-0

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