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RHENIUM(V) COMPLEXES WITH VINYL AMIDES
No full textThe reactions of trans-ReOCl3(PPh3)2 with vinyl amides such as RCOCH=C(R′)NH2, where R′ = CH2CH2CO2H and R = Ph and C6H13; or R′ = Me, CH2CH2CO2Me and R = Ph, give complexes of the type ReOCl2-[RC(O-)=CHC(R′)=NH]PPh3, the coordination geometry of which have been deduced from i.r. and1H n.m.r. spectroscopic data. © 1981 Verlag Chemie GmbH
Complexes of technetium(IV) and (III) with tertiary phosphines.
No full textTrans-TcX4L2 and mer-TcX3L3 (X = Cl, Br; L = PMe2Ph, PEt2Ph, PPh3) were prepd. from NH4TcO4, HX, and L in EtOH and characterized by far-ir and PMR spectra. TcCl3(PMe2Ph)3 refluxed in CCl4 gave TcCl4(PMe2Ph)2 and redn. of the latter with NaBH4 gave the former. Magnetic susceptibility and PMR results for mer-TcCl3(PMe2Ph)3 were compared with those for analogous d4 complexes
99Tc≡N/ 99mTc≡N-complexes with aminoacids, synthesis, and crystal structure of [ 99TcNCl (CYS-OEt) (PPh 3)]
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PREPARATION AND CHARACTERIZATION OF MIXED AMIDO, CARBOXYLATO OR THIAZOLATO CARBONYL(PHOSPHINE)TECHNETIUM(I) COMPLEXES
No full textThe complex [Tc(PPh3)2(CO)3Cl] reacts with the lithium salt of amido-carboxylato- and thiazolato-derivatives to give the new complexes[Figure not available: see fulltext.] (Ar= C6H4Me-p or C6H4OMe-p), [Tc(PPh3)2(CO)2(amt1,2)] [amt1=anion of 2-(methylamino)thiazole; amt2=anion of 2-4-methoxyphenylamino(thiazole)] and [Tc(PPh3)2(CO)2-[Figure not available: see fulltext.] (R = Ph2CH, PhCH2 or CCl3). The compounds have been characterized by elemental analysis, and i.r. and1H n.m.r. spectra. © 1986 VCH Verlagsgesellschaft mbH
Mixed schiff base, carbonyl(phosphine)rhenium(I) complexes
No full textThe Re(CO)2(L)P2 complexes (L=N-methylsalicylideneiminate, N-phenylsalicylideneiminate, half N,N′-ethylenebis(salicylideneiminate) or 8-hydroxyquinolinate; P=dimethyl(phenyl)phosphine or triphenylphosphine) were synthesized from the ReCl(CO)3P2 complexes and characterized by elemental analysis, i.r. and1H n.m.r. spectroscopy. © 1982 Verlag Chemie GmbH
Synthesis and characterization of paramagnetic schiff base complexes of rhenium(IV)
No full textReCl4(PPh3)2 reacts with LH (LH=N-methyl- or N-phenylsalicylideneimine Schiff bases) to give ReCl4(LH)PPh3, ReCl4(LH)2, ReCl3(L)PPh3 and ReCl2(L)2. With LH=8-hydroxyquinoline only chelate derivatives were obtained. Compounds ReCl3(L)PMe2Ph were obtained by heating the complexes ReCl2(L)(PMe2Ph)2 under reflux in CCl4. The complexes were characterized by elemental analysis, i.r. and1H n.m.r. spectra. © 1983 Verlag Chemie GmbH
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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