Inhaltsübersicht. Bei der Darstellung von BaMnAlF 7 erhielten wir als Nebenprodukt Einkristalle von Ba 3 Al 2 F 12 (a ϭ 1020,3(2), b ϭ 988,5(1), c ϭ 952,2(1) pm, Raumgruppe Pnnm, Z ϭ 4). Die erneute Verfeinerung bestätigte die schon bekannte Struktur, lieferte aber verbesserte Ergebnisse (R 1 Ј ϭ 0,028 bzw. wR 2 ϭ 0,06 für 1908 bzw.Abstract. Preparing BaMnAlF 7 we obtained single crystals of Ba 3 Al 2 F 12 as a by-product (a ϭ 1020.3(2), b ϭ 988.5(1), c ϭ 952.2(1) pm, space group Pnnm, Z ϭ 4). The redetermination confirmed the structure already known, but improved the results (R 1 Ј ϭ 0.028 and wR 2 ϭ 0.06 for 1908 and 2717 reflections, resp.).

The syntheses and photochemical properties of the novel aminoaryldiarylboranes, 4, which are isoelectronic with triarylmethane dyes, and also pyrrolyl-8, and indolyl-diarylboranes 11, are described. The fluorescence spectra are strongly dependent on the solvent. The use of o-disubstituted arenes as stabilizing substituents at the boron atom leads to highly coloured solids which are stable to air and moisture. The structures of the triarylboranes 4a and b were confirmed by X-ray analyses.

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Crystal structure, IR Data, Raman Data, Mass Spectrum, Bis(/2-pentanethiolato)mercury(II)The preparation of bis(/?-pentanethiolato)mercury(II), Hg(SC5Hn)2, and n-pentanethiolatomercury(II) iodide, IH gSC sH n, starting from H gl2 and rc-pentanethiol, is presented; the X-ray crystal structure determination of Hg(SC5H n)2 reveals a layered structure of the bis(thiolate) molecule. With 178.69(1.02)° the S-H g-S moiety is nearly linear. The Hg-S bond length is shorter then the sum of the covalent radii of sulphur and mercury atoms indicating a primary co-ordination number of two, which is supported by the IR and Raman spectra. Assignments of i/Sym(Hg-S) and i'asym(Hg-S) are given. The mass spectrum reveals the title compound to be monomeric in the gas phase. Melting and thermal decomposition have been investigated by DTA methods. The behaviour towards organic thiols is discussed. In addition, IR and Raman spectroscopic data of IH gSCsHn are presented and discussed.

Este artigo apresenta novos dados sobre a precisão e validade dos resultados na Escala de Satisfação com a Vida (SWLS) junto de estudantes universitários. Uma amostra de 545 estudantes provenientes de uma universidade pública portuguesa foi considerada. A unidimensionalidade da escala foi confirmada, apresentando todos os itens cargas fatoriais superiores a .60, ainda que a sua invarância em função do género dos estudantes não se tenha confirmado, desaconselhando comparações de resultados entre homens e mulheres. As correlações moderadas em sentido positivo e negativo com os afetos positivos e negativos avaliados através da Escala de Afetos Positivos e Negativos (PANAS) traduzem evidências de validade de critério. A consistência interna dos resultados nos cindo itens da ESV situou-se em .77, sendo considerada adequada até pelo número reduzido de itens.