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Einkristalle des Neodym(III)-meta-Borats Nd(BO2)3 und -ortho-Borats Nd[BO3]/Single Crystals of the Neodymium(III) meta-Borate Nd(BO2)3 and ortho-Borate Nd[BO3]
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Helge Müller-Bunz
Veröffentlicht/Copyright:
2. Juni 2014
Pale violet, transparent, air- and water-resistant single crystals of the neodymium oxoborates Nd[BO3] and Nd(BO2)3 emerged from reactions of Nd2O3, NdF3 or NdCl3, and B2O3 in variable molar ratios during attempts to synthesize neodymium halide borates (e. g. Nd2F3[BO3] or NdCl(BO2)2). The preparations were carried out at 700 °C in sealed tantalum capsules using CsCl as a flux, or at 850 °C in evacuated silica ampoules with an excess of NdCl3 as fluxing agent. Neodymium ortho-borate λ -Nd[BO3] (orthorhombic, Pnma; a = 573.51(5), b = 505.64(4), c = 809.16(7) pm; Z = 4) is isotypic with aragonite-type CaCO3 containing quasi-planar, discrete [BO3]3− triangles (d(B-O) = 138 pm, 3×) and Nd3+ in ninefold oxygen coordination (d(Nd-O) = 239 - 269 pm, CN = 9). In the crystal structure of neodymium meta-borate Nd(BO2)3 (NdB3O6; monoclinic, C2/c; a = 983.24(9), b = 809.32(7), c = 637.71(6) pm, β = 126.639(8)°; Z = 4) both [BO3]3− triangles (d(B-O) = 133 - 142 pm, CN = 3) and [BO4]5− tetrahedra (d(B-O) = 145 - 149 pm, CN = 4) are present. They share common corners forming chains of the composition 1∞{([(B1)(O1)e2/1(O2)e2/1][(B2)(O1)e1/1(O2)e1/1(O3)t1/1]2)3−} (≡ 1∞{(BO2)−}) which run parallel to the [101] direction and are interconnected by Nd3+ cations in tenfold coordination of oxygen atoms (d(Nd-O) = 238 - 280 pm, CN = 10).
Received: 2002-12-13
Published Online: 2014-6-2
Published in Print: 2003-5-1
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- Einkristalle des Neodym(III)-meta-Borats Nd(BO2)3 und -ortho-Borats Nd[BO3]/Single Crystals of the Neodymium(III) meta-Borate Nd(BO2)3 and ortho-Borate Nd[BO3]
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Artikel in diesem Heft
- Organoaluminium and -Gallium Compounds with O-Oximato Substituents
- Three-Membered Ring Formation by Si···N Interactions in Aminosulfenylsilanes
- Einkristalle des Neodym(III)-meta-Borats Nd(BO2)3 und -ortho-Borats Nd[BO3]/Single Crystals of the Neodymium(III) meta-Borate Nd(BO2)3 and ortho-Borate Nd[BO3]
- Synthesis and Structure of 1-{2,2-Dimethyl-4,6-dioxo-5-(1-pyridinio)-1,3- dioxan-5-yl}pyridinium Ylide: A New Route to Meldrum’s Acid Derivatives
- The NaCl Adduct of the Iron-Indium Compound Fe2(CO)6(μ-CO)(μ-InR)2 [R = C(SiMe3)3] – a One-Dimensional Coordination Polymer with Sodium Oxygen Bridges
- On Attempts to Synthesize Lanthanide Complexes of the Dianionic Fluorenyl-alkoxo Ligand [C13H8-cyclo-C6H10-O]2-. Crystal Structure of (C13H9-cyclo-C6H10-O)LaI2(DME)2
- Zinc (Hydrogen-β-glutamate)-chloride Hydrate [Zn (β-GluH)Cl(H2O)], a One-dimensional Coordination Polymer
- Preparation and Crystal Structures of Ternary Rare Earth Silver and Gold Arsenides LnAgAs2 and LnAuAs2 with Ln = La–Nd, Sm, Gd, and Tb
- Synthese, Kristallstruktur und spektroskopische Charakterisierung von Bis(dimethylammonium)hexachlorotitanat [Me2NH2]2[TiCl6]/ Synthesis, Crystal Structure, and Spectroscopic Characterization of Bis(dimethylammonium) Hexachlorotitanate [Me2NH2]2[TiCl6]
- The Effect of High Energy Milling on the Solid State Synthesis of MnFe2O4 from Mixtures of MnO-Fe2O3 and Mn3O4-Fe2O3
- Behaviour of Bimetallic Pt-Pd Carbon-Supported Catalysts in Methanol Electrooxidation
- Crystal Structure and Magnetic Properties of a Dinuclear Iron(III) Doubly Oxygen Bridged Schiff Base Complex
- seco-Dolastanes from the Marine Brown Alga Dictyota dichotoma (Huds.) Lamour
- Large Scale Synthesis of 4’-(4-Bromophenyl)-2,2’:6’,2”-terpyridine and Nature of the Mysterious Green By-product
- C-Substituierte Cyclame aus Cyclotetrapeptiden [1]/ C-Substituted Cyclams from Cyclotetrapeptides [1]
- Synthesis of the Pyrrole-Imidazole Alkaloid Sventrin from the Marine Sponge Agelas sventres
- Carboxylic Acid Analogues of Fosmidomycin
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- Vibrational Spectra of the Layered Compound [(VO2)2(4,4-bipy)0.5(4,4′- Hbipy)(PO4)]·H2O
- A Hydrogen Bonded Aluminium Alkoxide Hydroxide Aggregate Resulting from the Exposure of Methylaluminium Dichloride to Air
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