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Crystal and molecular structures of 5,7-dimethyl-1,8-naphthyridine-2-ol (=LH) and of its mercury (II) complex HgL2 and synthesis of some lanthanide/HgL2 heterometallic complexes

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Abstract

The crystal structures of the title compounds have been determined by single crystal diffraction methods. Crystals of 5,7-dimethyl-1,8-naphthyridine-2-ol (1) are monoclinic, space groupP21/n witha=7.336(2),b=8.989(2),c=13.125(3)Å,β=95.72(3)°,V=861.2(4)Å3,Z=4,D c =1.34 g cm−3, finalR=0.052. The molecules are linked in pairs by two N-H⋯O hydrogen bonds, and these dimers are stacked in a discontinuous, stepped fashion. Crystals of HgL2 (2) are monoclinic space groupP21,/c witha=4.044(2),b=12.147(2),c=18.093(5)Å,β=93.32(2)°,V=887.3(4)Å3,Z=2,D c =2.05 g cm−3, finalR=0.051. In2 the mercury binds to N(1) to form a linear N-Hg-N coordination geometry, and the HgL2 molecules form a continuous stacked structure. The syntheses of the compounds ML4(NO3)3·H2O (M=Nd, Gd, and Er), PrHg2L4(NO3)3, andM 2Hg3L6(NO3)6 (M=Gd, Er) are also reported.

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  1. Maria Lalia-Kantouri

    Present address: Department of General and Inorganic Chemistry, Aristotelian University, 54006, Thessaloniki, Greece

Authors and Affiliations

  1. Chemistry Department, Imperial College of Science, Technology and Medicine, SW7 2AY, London, UK

    David M. L. Goodgame, Maria Lalia-Kantouri & David J. Williams

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  1. David M. L. Goodgame
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  2. Maria Lalia-Kantouri
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  3. David J. Williams
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Goodgame, D.M.L., Lalia-Kantouri, M. & Williams, D.J. Crystal and molecular structures of 5,7-dimethyl-1,8-naphthyridine-2-ol (=LH) and of its mercury (II) complex HgL2 and synthesis of some lanthanide/HgL2 heterometallic complexes. Journal of Crystallographic and Spectroscopic Research 23, 577–583 (1993). https://doi.org/10.1007/BF01228768

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  • DOI: https://doi.org/10.1007/BF01228768

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