M. Tullius Cicero, Academica priora (1-13), De natura Deorum (13-46v), De fato (46v-50v), Epistolae ad familiares I-VIII, 8, 6 (51-91v). - Dares Phrygius, De excidio Troiae historia (92-97v).

Ce ms. forme un recueil de deux groupes de textes différents (Cicéron, ff. 1-91v et Darès, ff. 92-97v), mais contemporains et homogènes. Chacun possède son propre système de signatures.

Congrès international d'archéologie préhistorique et d'anthropologie. 11-ème session, à Moscou, du 1/13-8/20 août, 1892.

Mode of access: Internet.

Na 1 Nachlass Max Horkheimer, 691 - "Materialien zum Antisemitismus", "Die deutschen Arbeiter und Angestellten", "Neue Enquêten über Folgen der Arbeitslosigkeit" (p. IX 164 - IX 166.1-13)

"Materialien zum Antisemitismus" (1940-65): Zeitungsausschnitte, Broschüren, Drucksachen; "Die deutschen Arbeiter und Angestellten" (1930-38):; 1. Inhaltsverzeichnisse, Typoskripte, 5 Blatt; 2. Fragebogen zur Erhebung, Druck, 4 Blatt; 3. Statistische Auswertung der Fragebögen; 4. Max Horkheimer: eigenhändige Notzizen zur Erhebung, 1 Blatt; 5. Robert S. Lynd: 1 Brief (Abschrift) an Erich Fromm, New York, 7.2.1938; 6. "Arbeiter und Angestellten-Enquête". Zum Stand der Ausarbeitung, 1937, Typoskript, 3 Blatt; 7. Bibliographien, Typoskripte, 42 Blatt; "Neue Enquêten über Folgen der Arbeitslosigkeit" (1936-37):; 1. Liste der Erhebungen in Österreich, Palestina, USA, 5 Blatt; 2. "Remarque générale sur l'enquête". Typoskript mit eigenhändigen Korrekturen, 9 Blatt; 3. - 6. Protokolle von Familieninterviews in Wien, 1937; 7. "Literatur über die psychologischen Wirkungen der Arbeitslosigkeit" (1936). Typoskript, 15 Blatt; 8. Hilde Oppenheimer-Bluhm: 1 Brief mit Unterschrift an Friedrich Pollock, Jerusalem, 7.12.1936, 1 Blatt; 9. Paul F. Lazarsfeld: "Memorandum Subject: Remarks on the French Questionaire" (12.3.1937). Typoskript, 1 Blatt; 10. Paul F. Lazarsfeld: "Report on the University of Newark Research Center". Als Typoskript vervielfältigt, 9 Blatt; 11. "Publications Directed and Distributed by Bureau of Social Research, Municipal University of Omaha, Omaha, Nebraska". Als Typoskript viervielfältigt, 3 Blatt; 12. Programm zur Conférence Internationale des Sciences Sociales, Paris, 1937, Drucksachen, 3 Blatt; 13. The American Sociological Society: Rundschreiben, Drucksache, 2 Blatt;

Das französische Generalstabswerk über den Krieg 1870/71. Wahres und Falsches besprochen von E. v. Schmid. Heft 1-13.

Imprint varies: pt.7-13, Leipzig, F. Engelmann.

Bufadienolides. 8. 12(13→14)abeo skeletal rearrangements

Several methods were developed for converting isodigitoxigenin (2a) into methyl acetals 4b and 4c. Of these, methanolysis (followed by acetylation) of isodigitoxigenin in the presence of p-toluenesulfonic acid proved most useful. Each isomer reached an equilibrium corresponding to ca. 3:1 acetal 4c to 4b within 15 min in benzene containing p-toluenesulfonic acid. Addition of dihydropyran to the equilibrium mixture resulted in excellent conversion into vinyl ether 5a. Heating either acetal 4b or 4c in benzene containing p-toluenesulfonic acid led to a skeletal rearrangement culminating in formation of C-norcardenolide 6. In addition to results of physical measurements, the structure of spiran 6 was confirmed by degradation to methyl ketone 8. Similar rearrangement of isodigitoxigenin gave spiran 9 accompanied by C-norcardenolide 6. Treating lactone 9 with p-toluenesulfonic acid in methanol-water provided acetals 10a and 10b, which on further contact with p-toluenesulfonic acid in refluxing benzene gave lactone 9 and cardenolide 6. Evidence underlying the stereochemical assignments noted for structures 4, 9, and 10 was also discussed.

Solvation and axial ligation properties of (2,3,7,8,12,13,17,18-octabromo-5,10,15,20-tetraphenylporphyrinato)zinc(II)

he solvation of (2,3,7,8,12,13,17,18-octabromo-5,10,15,20-tetraphenylporphyrinato)zinc(II)[Zn(obtpp)], in twelve different solvents results in large red shifts of the B and Q bands of the porphyrin accompanied by enhanced absorbance ratios of the Q bands. These observations are ascribed to the destabilisation of the highest occupied molecular orbital a2u of the porphyrin arising from a flow of charge from the axial ligand to the porphyrin ring through the zinc(II) ion. The binding constants of adducts of [Zn(obtpp)] with neutral bases have been found to be an order of magnitude greater than those observed for the corresponding adducts of (5,10,15,20-tetraphenylporphyrinato)-zinc and vary in the order piperidine > imidazole > pyridine > 3-methylpyridine > pyridine-3-carbaldehyde. The enhanced binding constants and large spectral shifts are interpreted in terms of the electrophilicity of [Zn(obtpp)] induced by the electron-withdrawing bromine substituents in the porphyrin core. The structure of [Zn(obtpp)(PrCN)2] has been determined; it reveals six-co-ordinated zinc(II) with two long Zn–N distance [2.51(4), 2.59(3)Å]. The porphyrin is non-planar and displays a saddle-shaped conformation.

Total synthesis of (+/-)-1,13-herbertenediol, (+/-)-alpha-herbertenol and (+/-)-beta-herbertenol

Total synthesis of alpha-herbertenol, beta-herbertenol and 1,13-herbertenediol, employing a Claisen rearrangement and ring-closing metathesis as key reactions for the generation of the cyclopentane containing vicinal quaternary carbons, has been described. (C) 2003 Elsevier Science Ltd. All rights reserved.

First-order structural transition in the magnetically ordered phase of Fe(1.13)Te

Specific heat, resistivity, magnetic susceptibility, linear thermal expansion (LTE), and high-resolution synchrotron x-ray powder diffraction investigations of single crystals Fe(1+y) Te (0.06 <= y <= 0.15) reveal a splitting of a single, first-order transition for y <= 0.11 into two transitions for y >= 0.13. Most strikingly, all measurements on identical samples Fe(1.13)Te consistently indicate that, upon cooling, the magnetic transition at T(N) precedes the first-order structural transition at a lower temperature T(s). The structural transition in turn coincides with a change in the character of the magnetic structure. The LTE measurements along the crystallographic c axis display a small distortion close to T(N) due to a lattice striction as a consequence of magnetic ordering, and a much larger change at T(s). The lattice symmetry changes, however, only below T(s) as indicated by powder x-ray diffraction. This behavior is in stark contrast to the sequence in which the phase transitions occur in Fe pnictides.

A density-functional study of Al-doped Ti clusters: TinAl (n=1-13)

Equilibrium geometries, stabilities, and electronic properties of TinAl (n=1-13) clusters have been studied by using density-functional theory with local spin density approximation and generalized gradient approximation. The ground-state structures of TinAl clusters have been obtained. The resulting geometries show that the aluminum atom remains on the surface of clusters for n<9, but is slowly getting trapped beyond n=9, meanwhile, the Al atom exhibits a valent transition from monovalent to trivalent. The geometric effects and electronic effects clearly demonstrate the Ti4Al cluster to be endowed with special stability. The studies on the bonds indicate the change from ionic to metalliclike. (C) 2004 American Institute of Physics.

Effect of alkyl group length on the conductivity in the 2,3,7,8,12,13,17,18-octakis(alkyl-thio)tetraazaporphyrins and redox properties of the metallooctakis(hexyl-thio)tetraazaporphyrins

A series of 2,3,7,8,12,13,17,18-octakis(alkyl-thio)tetraazaporphyrins (H(2)OATTAP) with different alkyl chain lengths have been synthesized. Cyclic voltammetry and differential pulse voltammetry have been used to investigate the effect of the controlled lengths of the eight peripheral thioether tails on the redox behavior of the molecules. The electrochemical reduction of octakis(hexyl-thio)tetraazaporphyrins, MOHTTAP (where M = Cu, Ni), was studied in 1,2-dichloroethane at a platinum electrode. The Cu derivative was oxidized in one single-electron-transfer step to yield a pi-cation radical and reduced in three single-electron-transfer steps to yield a pi-anion radical, dianion and trianion, respectively. For the Ni derivative, electron transfer reactions involving both the central metal atom and the macrocyclic ring were observed. Electron transfer pathways are proposed based upon voltammetric and in situ spectroelectrochemical results.