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Structural Systematics for Lanthanide(III) Systems: Lattice Interactions in Salts [CoL3][Ln(dipic)3]·nH2O (L = N,N′‐Aromatic Bidentate Ligand; dipic = Dipicolinate = pyridine‐2,6‐dicarboxylate) Containing Complex Ions of D3 Symmetry

Identifieur interne : 000A87 ( Istex/Checkpoint ); précédent : 000A86; suivant : 000A88

Structural Systematics for Lanthanide(III) Systems: Lattice Interactions in Salts [CoL3][Ln(dipic)3]·nH2O (L = N,N′‐Aromatic Bidentate Ligand; dipic = Dipicolinate = pyridine‐2,6‐dicarboxylate) Containing Complex Ions of D3 Symmetry

Auteurs : Jack M. Harrowfield [Australie, France] ; George A. Koutsantonis [Australie] ; Brian W. Skelton [Australie] ; Adam J. Strong [Australie] ; Allan H. White [Australie]

Source :

RBID : ISTEX:DB897DFD18DE20B1627006DA01798EDFF024A71A

Descripteurs français

English descriptors

Abstract

Structural characterisation of a number of hydrated solids containing chiral, kinetically inert [Co(A–A)3]3+ cations (A–A = 2,2′‐bipyridine, 1,10‐phenanthroline, 4,4′‐dimethyl‐2,2′‐bipyridine) and chiral, kinetically labile [Ln(dipic)3]3– anions (Ln = La, Eu, Tb, Ho, Er, Lu, Y, though not for all cobalt cations; dipic = dipicolinate = pyridine‐2,6‐dicarboxylate) show a remarkable range of associations between the lattice components, though all are racemic arrays. Analysis of the structures in terms of short interatomic contacts between the components shows that, whereas numerous contacts of the heteroaromatic ligands do occur, very few define an arrangement which could be truly termed “π‐stacking” where the rings are closely parallel and atom overlaps in projection are substantial. Water is important in the highly hydrated lattice structures, not only because of hydrogen‐bonding interactions with itself and carboxylate‐O atoms but also because of its interactions with the aromatic units. The family [Co(bipy)3][Ln(dipic)3]·~13H2O are essentially isomorphous for the full range of Ln plus Y (triclinic, P\bar{1}, a = 12.3, b = 14.3, c = 16.5 Å, α = 94, β = 94, γ = 108 ˚, Z = 2). Among the heavier lanthanides, the potential symmetry of the anion/cation combination is realised in the trigonal space group P\bar{3}, both species lying together as an ion‐pair, disposed on the trigonal axis for [Co(phen)3][Ln(dipic)3]·22H2O (Ln = Eu, Er; a = 15.2, c = 16.8 Å, Z = 2).

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DOI: 10.1002/zaac.200900409


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<title xml:lang="en">Structural Systematics for Lanthanide(III) Systems: Lattice Interactions in Salts [CoL3][Ln(dipic)3]·nH2O (L = N,N′‐Aromatic Bidentate Ligand; dipic = Dipicolinate = pyridine‐2,6‐dicarboxylate) Containing Complex Ions of D3 Symmetry</title>
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<title level="j" type="main">ZAAC ‐ Journal of Inorganic and General Chemistry</title>
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<term>Anion columns</term>
<term>Anion contacts</term>
<term>Anorg</term>
<term>Aqueous layer</term>
<term>Aromatic rings</term>
<term>Asymmetric unit</term>
<term>Carboxylate</term>
<term>Cation</term>
<term>Cation columns</term>
<term>Cation pairs</term>
<term>Chem</term>
<term>Chirality</term>
<term>Cobalt</term>
<term>Cobalt cations</term>
<term>Complex cations</term>
<term>Complex ions</term>
<term>Coordination sphere interpenetration</term>
<term>Crystal data</term>
<term>Crystallographic symmetry</term>
<term>Dalton trans</term>
<term>Data centre</term>
<term>Data collection</term>
<term>Derivative</term>
<term>Dipic dipicolinate</term>
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<term>Dipicolinate ligands</term>
<term>Direct contacts</term>
<term>Direct interactions</term>
<term>Double layer</term>
<term>Double layers</term>
<term>Europium</term>
<term>Europium analogue</term>
<term>Formula unit</term>
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<term>Heteroaromatic ligand</term>
<term>Heteroaromatic ligands</term>
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<term>Hexagonal array</term>
<term>Homochiral</term>
<term>Homochiral columns</term>
<term>Hydrogen atoms</term>
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<term>Interatomic</term>
<term>Interatomic contacts</term>
<term>Intermolecular forces</term>
<term>Kgaa</term>
<term>Lanthanide</term>
<term>Lanthanide anions</term>
<term>Lanthanide contraction</term>
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<term>Lattice</term>
<term>Lattice components</term>
<term>Lattice interactions</term>
<term>Lattice residues</term>
<term>Lattice structure</term>
<term>Ligand</term>
<term>Ligand atoms</term>
<term>Metal atoms</term>
<term>Molecule</term>
<term>Obvious differences</term>
<term>Opposite chirality</term>
<term>Outer atoms</term>
<term>Pair type</term>
<term>Pair type heterochiral heterochiral homochiral homochiral heterochiral</term>
<term>Phen</term>
<term>Racemic compounds</term>
<term>Racemic mixtures</term>
<term>Ring planes</term>
<term>Same chirality</term>
<term>Site occupancies</term>
<term>Specific interactions</term>
<term>Structural systematics</term>
<term>Structure determinations</term>
<term>Structure refinement</term>
<term>Trial refinement</term>
<term>Unit cell contents</term>
<term>Various contacts</term>
<term>Verlag</term>
<term>Verlag gmbh</term>
<term>Water molecule</term>
<term>Water molecule oxygen atoms</term>
<term>Water molecules</term>
<term>Weinheim</term>
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<term>Acta chem</term>
<term>Acta crystallogr</term>
<term>Allg</term>
<term>Anion</term>
<term>Anion columns</term>
<term>Anion contacts</term>
<term>Anorg</term>
<term>Aqueous layer</term>
<term>Aromatic rings</term>
<term>Asymmetric unit</term>
<term>Carboxylate</term>
<term>Cation</term>
<term>Cation columns</term>
<term>Cation pairs</term>
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<term>Chirality</term>
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<term>Complex ions</term>
<term>Coordination sphere interpenetration</term>
<term>Crystal data</term>
<term>Crystallographic symmetry</term>
<term>Dalton trans</term>
<term>Data centre</term>
<term>Data collection</term>
<term>Derivative</term>
<term>Dipic dipicolinate</term>
<term>Dipicolinate</term>
<term>Dipicolinate ligands</term>
<term>Direct contacts</term>
<term>Direct interactions</term>
<term>Double layer</term>
<term>Double layers</term>
<term>Europium</term>
<term>Europium analogue</term>
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<term>Heteroaromatic ligand</term>
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<term>Heterochiral contacts</term>
<term>Heterochiral pair interactions</term>
<term>Heterochiral pairs</term>
<term>Heterogeneous sheets</term>
<term>Hexagonal array</term>
<term>Homochiral</term>
<term>Homochiral columns</term>
<term>Hydrogen atoms</term>
<term>Inorg</term>
<term>Interatomic</term>
<term>Interatomic contacts</term>
<term>Intermolecular forces</term>
<term>Kgaa</term>
<term>Lanthanide</term>
<term>Lanthanide anions</term>
<term>Lanthanide contraction</term>
<term>Lanthanum</term>
<term>Lattice</term>
<term>Lattice components</term>
<term>Lattice interactions</term>
<term>Lattice residues</term>
<term>Lattice structure</term>
<term>Ligand</term>
<term>Ligand atoms</term>
<term>Metal atoms</term>
<term>Molecule</term>
<term>Obvious differences</term>
<term>Opposite chirality</term>
<term>Outer atoms</term>
<term>Pair type</term>
<term>Pair type heterochiral heterochiral homochiral homochiral heterochiral</term>
<term>Phen</term>
<term>Racemic compounds</term>
<term>Racemic mixtures</term>
<term>Ring planes</term>
<term>Same chirality</term>
<term>Site occupancies</term>
<term>Specific interactions</term>
<term>Structural systematics</term>
<term>Structure determinations</term>
<term>Structure refinement</term>
<term>Trial refinement</term>
<term>Unit cell contents</term>
<term>Various contacts</term>
<term>Verlag</term>
<term>Verlag gmbh</term>
<term>Water molecule</term>
<term>Water molecule oxygen atoms</term>
<term>Water molecules</term>
<term>Weinheim</term>
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<front>
<div type="abstract" xml:lang="en">Structural characterisation of a number of hydrated solids containing chiral, kinetically inert [Co(A–A)3]3+ cations (A–A = 2,2′‐bipyridine, 1,10‐phenanthroline, 4,4′‐dimethyl‐2,2′‐bipyridine) and chiral, kinetically labile [Ln(dipic)3]3– anions (Ln = La, Eu, Tb, Ho, Er, Lu, Y, though not for all cobalt cations; dipic = dipicolinate = pyridine‐2,6‐dicarboxylate) show a remarkable range of associations between the lattice components, though all are racemic arrays. Analysis of the structures in terms of short interatomic contacts between the components shows that, whereas numerous contacts of the heteroaromatic ligands do occur, very few define an arrangement which could be truly termed “π‐stacking” where the rings are closely parallel and atom overlaps in projection are substantial. Water is important in the highly hydrated lattice structures, not only because of hydrogen‐bonding interactions with itself and carboxylate‐O atoms but also because of its interactions with the aromatic units. The family [Co(bipy)3][Ln(dipic)3]·~13H2O are essentially isomorphous for the full range of Ln plus Y (triclinic, P\bar{1}, a = 12.3, b = 14.3, c = 16.5 Å, α = 94, β = 94, γ = 108 ˚, Z = 2). Among the heavier lanthanides, the potential symmetry of the anion/cation combination is realised in the trigonal space group P\bar{3}, both species lying together as an ion‐pair, disposed on the trigonal axis for [Co(phen)3][Ln(dipic)3]·22H2O (Ln = Eu, Er; a = 15.2, c = 16.8 Å, Z = 2).</div>
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