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  • 1
    ISSN: 1572-901X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Summary Iron(III) complexes of a quadridentate N2S2 donor ligand, 1,2-di(o-aminophenylthio)ethane (DAPTE) and its Schiff Base with salicylaldehyde, a hexadentate N2S2O2 donor ligand,viz. 1,2-di(o-salicylaldiminophenylthio)ethane (H2DSALPTE) have been synthesised and characterised. The Schiff base ligand (1 mol) gave a dark green tri-iron(III) [Fe3(DSALPTE)(HDSALPTE)Cl3]Cl2 complex when reacted with anhydrous iron(III) chloride (1 mol). The Mössbauer data of this complex suggest the presence of three iron sites, one of which is octahedral and the other two tetrahedral. On the other hand, Fe(ClO4)3 reacted smoothly with H2DSALPTE in ethanol to give a mononuclear pseudo-octahedral complex in which the ligand functions in a dibasic hexadentate fashion. Mössbauer data suggest the presence of a low-spin-high-spin equilibrium in the solid state. The manganese(III) and cobalt(III) complexes of the Schiff base, H2DSALPTE, are also studied for the sake of comparison with the corresponding iron(III) complex. The N2S2 ligand, however, formed a low-spin pseudo-octahedral iron(III) complex. The complexes have been characterised by elemental analysis, molar conductance values, cryomagnetic data and i.r., electronic and Mössbauer spectral data.
    Materialart: Digitale Medien
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  • 2
    ISSN: 1572-901X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Summary Reactions of glyoxal bis(morpholineN-thiohydrazone), H2gbmth, with NiCl2·6H2O, Ni(OAc)2·4H2O, Ni(acac)2· H2O, CuCl2·2H2O, Cu(OAc)2·H2O, Cu(acac)2, CoCl2· 6H2O, Co(OAc)2·4H2O and Co(acac)2·2H2O yield complexes of the type [M(gbmth)], [M=NiII, CuII or CoII]. Diacetyl reacts with morpholineN-thiohydrazide in the presence of nickel salts to yield [NiII(dbmth)], [NiII(dmth)(OAc)]H2O and [NiII(Hdmth)(NH3)Cl2] involving N2S2 and NSO donor ligands. Copper and cobalt complexes of N2S2 and NSO donor ligands with compositions [CuII(dbmth)], [CoII(dbmth)]·4H2O and [CoII(H2dbmth)]Cl2, have been isolated. The compounds have been characterised by elemental analyses, magnetic moments, molar conductance values and spectroscopic (electronic and infrared) data.
    Materialart: Digitale Medien
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  • 3
    ISSN: 1572-901X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Summary Many new oxomolybdenum(V) and dioxomolybdenum(VI) complexes have been synthesized with tri- and tetradentate Schiff bases derived by the condensation of salicylaldehyde, thiosalicylaldehyde,o-hydroxyacetophenone, 3-carboxysalicyclaldehyde or acetylacetone with aminoalcohols, polymethylenediamines ando-phenylenediamines. Mononuclear oxothiolato Schiff base complexes of molybdenum(V) have been prepared for the first time. Quadridentate Schiff bases derived from salicylaldehyde and substituted salicylaldehydes ando-phenylenediamine have also been successfully employed to isolate dioxomolybdenum(VI) complexes in the solid state, in which two oxygen atoms of the MoO2 group arecis- to each other, similar to the situation observed for other dioxomolybdenum(VI) complexes of salicylaldehyde-polymethylenediamine Schiff base ligands. Structures have been determined with the help of elemental analyses, magnetic susceptibilities, molar conductances, i.r., electronic and1H n.m.r. spectral data.
    Materialart: Digitale Medien
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  • 4
    ISSN: 1572-901X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Summary Compounds of the type ML, where M is a divalent metal ion such as Ni, Cu and Co and H2L=biacetylbis(mercaptophenylimine) and [MLCl], where M is iron(III) have been prepared and characterised by elemental analysis, molar conductances, magnetic susceptibilities and i.r. and electronic spectral data. A trinuclear complex of palladium(II), [Pd3L2]Cl2, has also been isolated and characterised.1H.n.m.r. spectroscopic data, along with other physico-chemical analytical results, support this trinuclear formulation. Reactions of these complexes, except for the palladium(II) complex, with difunctional alkylating agents produce macrocyclic derivatives with alkylation of the coordinated mercaptide groups.
    Materialart: Digitale Medien
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  • 5
    Digitale Medien
    Digitale Medien
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 112 (1979), S. 823-833 
    ISSN: 0009-2940
    Schlagwort(e): Chemistry ; Inorganic Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Beschreibung / Inhaltsverzeichnis: Basic Metals, X. C5H5Co(PMe3)2 as Building Block for the Formation of Metal-Metal BondsC5H5Co(PMe3)2 (1) reacts with equimolar amounts of ZnCl2 and PMe3 to give the complex C5H5(PMe3)2CoZnCl2(PMe3)(2). Contrary, 1, ZnCl2 and PPh3 react to give a mixture of C5H5(PMe3)2CoZnCl2 (3) and (PPh3)2ZnCl2. The reaction of 2 with PMe3 leads to cleavage of the Co—Zn bond with formation of 1 and (PMe3)2ZnCl2. - 1 reacts with [(PMe3)2CuCl]2 to give C5H5(PMe3)2CoCuCl(PMe3)2(4). In this complex and in 2, the metal atoms are probably tetrahedrally coordinated. Reaction of 4 with PMe3 leads to 1 and (PMe3)3CuCl. - Complexes having Co—Sn bonds can be synthesized through reaction of 1 with SnCl4. Me3SnCl. and Ph3SnCl. The 1:1 adducts 5, 8, and 9 that are first formed react with SnCl4 or NH4PF6 with loss of a chloride ion and formation of the cationic complexes [C5H5(PMe3)2CoSnR3]+ (R = Cl, Me, Ph) (6, 11 and 12). Electrophilic substitution of the SnMe3 group in [C5H5(PMe3)2CoSnMe3]PF6 (11) by SnCl4 or HgCl2 leads to [C5H5(PMe3)2CoSnCl3]PF6 (10) or [C5H5(PMe3)2CoHgCl]PF6 (14), respectively. - With HgCl3 1 forms both a 1:1 and a 1 :2 adduct (13 and 15). Structural suggestions for these compounds are discussed.
    Notizen: C5H5Co(PMe3)2 (1) reagiert mit äquimolaren Mengen ZnCl2 und PMe3 zu dem Komplex C5H5(PMe3)2CoZnCl2(PMe3)(2). Aus 1, ZnCl2 und PPh3 entsteht dagegen ein Gemisch von C5H5 (PMe3)2CoZnCl2 (3) und (PPh3)2ZnCl2. Die Reaktion von 2 mit PMe3 führt unter Spaltung der Co—Zn-Bindung zu 1 und (PMe3)2ZnCl2. - Mit [(PMe3)2CuCl]2 reagiert 1 zu C5H5(PMe3)2CoCuCl(PMe3)2(4), in dem wahrscheinlich wie in 2 beide Metallatome tetraedrisch koordiniert sind. Bei der Umsetzung von 4 mit PMe3 bildet sich 1 und (PMe3)3CuCl. - Die Synthese von Komplexen mit Co—Sn-Bindungen gelingt durch Reaktion von 1 mit SnCl4, Me3SnCl und Ph3SnCl. Die primär gebildeten l : l-Addukte 5, 8 und 9 reagieren mit SnCl4 bzw. NH4PF6 unter Abspaltung eines Chlorid-Ions und Bildung der kationischen Komplexe [C5H5(PMe3)2CoSnR3]+(R = Cl, Me, Ph) (6, 11 und 12). Die elektrophile Substitution der SnMe3-Gruppe in [C5H5(PMe3)2CoSnMe3]PF6 (11) durch SnCl4 bzw. HgCl2 führt zu [C5H5(PMe3)2CoSnCl3]PF6 (10) bzw. [C5H5(PMe3)2CoHgCl]PF6 (14). - Mit HgCl2 bildet 1 sowohl ein 1:1- als auch ein 1:2-Addukt (13 und 15). Strukturvorschläge für diese Verbindungen werden diskutiert.
    Zusätzliches Material: 1 Tab.
    Materialart: Digitale Medien
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  • 6
    Digitale Medien
    Digitale Medien
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 327 (1964), S. 104-109 
    ISSN: 0044-2313
    Schlagwort(e): Chemistry ; Inorganic Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Beschreibung / Inhaltsverzeichnis: Es wurden Komplexe von SCHIFFschen Basen der 3-Aldehydosalicylsäure mit Fe(III)-, Fe(II)-, Mn(II)- und VO3+-Ionen hergestellt und untersucht. Die möglichen Strukturen der Komplexe werden an Hand der chemischen und magnetischen Eigenschaften erörtert.
    Notizen: Complex compounds of SCHIFF's bases of 3-aldehydo-salicylic acid with iron (both ferrous and ferric), manganese and vanadium have been prepared and their properties studied. The probable structures of the complexes have also been discussed from the view point of their chemical properties and magnetic moment values.
    Materialart: Digitale Medien
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