Equilibrium and structural studies of silicon(IV) and aluminium(III) in aqueous solution. 33. The Al(methylmalonate)(2)(H2O)(2)(-) complex crystallised as a double salt with Al(H2O)(6)(3+) and Cl-
1998 (English)In: Acta Chemica Scandinavica, ISSN 0904-213X, Vol. 52, no 8, 995-999 p.Article in journal (Refereed) Published
The crystal structure of hexaaquaaluminium(III) trans-diaquabis(2-methylpropanedionate)aluminate(III) dichloride tetrahydrate, [Al(H2O)(6)(3+)] [Al(C4H4O4)(2)(H2O)(2-)][Cl-](2 .)4H(2)O, was determined by single-crystal X-ray diffraction. The compound crystallises in the triclinic space group , with a = 6.956(1), b = 8.413(2), c = 10.737(2) Angstrom, alpha = 89.78(2), beta = 106.90(2), gamma = 95.25(2)degrees and Z = 1. The refinement of 148 parameters on 2563 reflections [I > 2.0 sigma(I)] gave a final R-value of 0.076 (R-w = 0.052, S = 1.082). The double salt was crystallised from aqueous solution and contains two different octahedral aluminium complexes, an Al(H2O)(6)(3+) complex and an AlL2(H2O)(2)(-) complex with two methylmalonate ions equatorially coordinated and with two molecules of water at the apices. The structure is built up from layers of the Al complexes alternated with layers of chloride ions and water molecules parallel to the (010) plane.
Place, publisher, year, edition, pages
1998. Vol. 52, no 8, 995-999 p.
IdentifiersURN: urn:nbn:se:umu:diva-38633ISI: 000075060000004OAI: oai:DiVA.org:umu-38633DiVA: diva2:379652