Expanding the Series of [RE2Ca(OQ)8] Structures: New Heterobimetallic Rare Earth/Alkaline Earth 8‐Quinolinolate Complexes
Identifieur interne : 000831 ( Main/Exploration ); précédent : 000830; suivant : 000832Expanding the Series of [RE2Ca(OQ)8] Structures: New Heterobimetallic Rare Earth/Alkaline Earth 8‐Quinolinolate Complexes
Auteurs : Glen B. Deacon [Australie] ; Peter C. Junk [Australie, États-Unis] ; Stuart G. Leary [Australie] ; Aron Urbatsch [Australie]Source :
- ZAAC ‐ Journal of Inorganic and General Chemistry [ 0044-2313 ] ; 2012-10.
English descriptors
- KwdEn :
- Acta crystallogr, Allg, Anorg, Bond lengths, Bruker apex, Calcium metal, Central calcium atom, Chem, Chemical formula formula mass crystal system space group, Complexes compound reference, Coordination number, Crystal structure, Crystallographic data, Dalton trans, Diffraction data, Direct metal reactions, Earth atoms, Enraf nonius kappa, Final values, Formula units, Glass tube, Gmbh, Heterobimetallic, Heterobimetallic complexes, Hydrogen atoms, Independent reflections rint, Inert flux tbub, Inorg, Kgaa, Lanthanoid, Lanthanoid contraction, Lanthanoid series, Ligand, Metal ions, Mmol, Nitrogen atoms, Nujol, Other complexes, Oxygen atoms, Rare earths, Rearrangement reactions, Same stoichiometry, Scandium, Scandium ions, Several days, Single crystals, Tbub, Terminal chelating, Thermal ellipsoids, Triclinic, Trigonal geometry, Unit cell, Verlag, Verlag gmbh, Weinheim.
- Teeft :
- Acta crystallogr, Allg, Anorg, Bond lengths, Bruker apex, Calcium metal, Central calcium atom, Chem, Chemical formula formula mass crystal system space group, Complexes compound reference, Coordination number, Crystal structure, Crystallographic data, Dalton trans, Diffraction data, Direct metal reactions, Earth atoms, Enraf nonius kappa, Final values, Formula units, Glass tube, Gmbh, Heterobimetallic, Heterobimetallic complexes, Hydrogen atoms, Independent reflections rint, Inert flux tbub, Inorg, Kgaa, Lanthanoid, Lanthanoid contraction, Lanthanoid series, Ligand, Metal ions, Mmol, Nitrogen atoms, Nujol, Other complexes, Oxygen atoms, Rare earths, Rearrangement reactions, Same stoichiometry, Scandium, Scandium ions, Several days, Single crystals, Tbub, Terminal chelating, Thermal ellipsoids, Triclinic, Trigonal geometry, Unit cell, Verlag, Verlag gmbh, Weinheim.
Abstract
Abstract. A series of heterobimetallic complexes [RE2Ca(OQ)8]·nHOQ(RE = Sm, Gd, Tb, Ho, Tm, Yb, Lu, Y, Sc) and the isostructural [Gd2Mg(OQ)8] were synthesised and structurally characterised. They were mainly obtained after direct reactions of the elemental rare earth metals with calcium metal in the presence of 8‐hydroxyquinoline (HOQ) and a 1, 3, 5‐tri‐tert‐butyl‐benzene (tBuB) flux, and some complexes were synthesised by pseudo solid‐state rearrangement reactions between powdered RE(OQ)3 and AE(OQ)2 (AE = Mg, Ca) in a 1, 2, 4, 5‐tetramethylbenzene (TMB) flux, at elevated temperatures. The linear trinuclear [RE2Ca(OQ)8] moieties show a six‐coordinate central calcium atom flanked by two eight‐coordinate rare earth atoms surrounded by six chelating‐bridging OQ and two terminal chelating OQ ligands. The structurally novel [Sc2Ca(OQ)8] has a bent Sc‐Ca‐Sc backbone and exhibits an eight‐coordinate central calcium and two seven‐coordinate scandium ions.
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DOI: 10.1002/zaac.201200138
Affiliations:
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<front><div type="abstract">Abstract. A series of heterobimetallic complexes [RE2Ca(OQ)8]·nHOQ(RE = Sm, Gd, Tb, Ho, Tm, Yb, Lu, Y, Sc) and the isostructural [Gd2Mg(OQ)8] were synthesised and structurally characterised. They were mainly obtained after direct reactions of the elemental rare earth metals with calcium metal in the presence of 8‐hydroxyquinoline (HOQ) and a 1, 3, 5‐tri‐tert‐butyl‐benzene (tBuB) flux, and some complexes were synthesised by pseudo solid‐state rearrangement reactions between powdered RE(OQ)3 and AE(OQ)2 (AE = Mg, Ca) in a 1, 2, 4, 5‐tetramethylbenzene (TMB) flux, at elevated temperatures. The linear trinuclear [RE2Ca(OQ)8] moieties show a six‐coordinate central calcium atom flanked by two eight‐coordinate rare earth atoms surrounded by six chelating‐bridging OQ and two terminal chelating OQ ligands. The structurally novel [Sc2Ca(OQ)8] has a bent Sc‐Ca‐Sc backbone and exhibits an eight‐coordinate central calcium and two seven‐coordinate scandium ions.</div>
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