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

Journal Article · · Journal of Crystallographic and Spectroscopic Research; (United States)
DOI:https://doi.org/10.1007/BF01228768· OSTI ID:5836171
; ;  [1]
  1. Imperial College of Science, London (United Kingdom)
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The crystal structures of the tile compounds have been determined by single crystal diffraction methods. Crystals of 5, 7-dimethyl-1, 8-naphthyridine-2-ol (1) are monoclinic, space group P2[sub 1]/n with a = 7.336(2), b = 8.989(2), c = 13.125(3)[angstrom], [beta] = 95.72(3)[degrees], V = 861.2(4)[angstrom][sup 3], Z = 4 D[sub c] = 1.34 g cm[sup [minus]3], final R = 0.052. The molecules are linked in pairs by two N-H[center dot][center dot][center dot]O hydrogen bonds, and these dimers are stacked in a discontinuous, stepped fashion. Crystals of HgL[sub 2] (2) are monoclinic space group P2[sub 1]/c with a = 4.044(2), b = 12.147(2), c = 18.093(5)[angstrom], [beta] = 93.32(2)[degrees], V = 887.3(4)[angstrom][sup 3], Z = 2, D[sub c] = 2.05 g cm[sup [minus]3], final R = 0.051. In 2 the mercury binds to N(1) to form a linear N-Hg-N coordination geometry, and the HgL[sub 2] molecules form a continuous stacked structure. The syntheses of the compounds ML[sub 4](NO[sub 3])[sub 3] [center dot] H[sub 2]O (M = Nd, Gd, and Er), PrHg[sub 2]L[sub 4](NO[sub 3])[sub 3], and M[sub 2]Hg[sub 3]L[sub 6](NO[sub 3])[sub 6] (M = Gd, Er) are also reported.
OSTI ID:
5836171
Journal Information:
Journal of Crystallographic and Spectroscopic Research; (United States), Journal Name: Journal of Crystallographic and Spectroscopic Research; (United States) Vol. 23:7; ISSN JCREDB; ISSN 0277-8068
Country of Publication:
United States
Language:
English

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALCOHOLS
CHEMICAL PREPARATION
COHERENT SCATTERING
COMPLEXES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIFFRACTION
DIMERS
ERBIUM COMPLEXES
GADOLINIUM COMPLEXES
HYDROXY COMPOUNDS
LATTICE PARAMETERS
MERCURY COMPLEXES
MOLECULAR STRUCTURE
MONOCLINIC LATTICES
NEODYMIUM COMPLEXES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
RARE EARTH COMPLEXES
SCATTERING
SYNTHESIS
X-RAY DIFFRACTION