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  • Articles  (3)
  • Articles: DFG German National Licenses  (3)
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  • Articles  (3)
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  • 1
    Electronic Resource
    Electronic Resource
    Tetrathiomolybdates of nickel (1995)
    Springer
    Transition metal chemistry 20 (1995), S. 56-58 
    Details
    ISSN: 1572-901X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary The complexes [Ni(en)3]MoS4, [Ni(dien)2]MoS4 and [Ni(phen)2(MoS4)]·2H2O (en = ethylenediamine, dien = diethylenetriamine, phen = 1,10-phenanthroline) were prepared. On the basis of their magnetochemical and spectral properties the compounds can be characterized as octahedral nickel(II) complexes. The complexes were also studied by c.v. Chemical oxidation of [Ni(en)3]MoS4 affords [Ni(en)MoS4]2SO4; this complex has been characterized by i.r. and e.p.r. spectroscopy and by magnetic measurements.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00135402
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  • 2
    Electronic Resource
    Electronic Resource
    Complexes of iron(III) salen and saloph Schiff bases with bridging dicarboxylic and tricarboxylic acids (1998)
    Springer
    Transition metal chemistry 23 (1998), S. 139-142 
    Details
    ISSN: 1572-901X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Six new dinuclear or trinuclear FeIII complexes involving tetradentate Schiff bases N,N′-bis(salicylidene)ethylenediamine (salenH2) or bis(salicylidene)-o-phenylenediamine (salophH2) with 2,5-pyridinedicarboxylic acid, acetylenedicarboxylic acid or 1,3,5-benzenetricarboxylic acid have been synthesized and characterized by means of elemental analysis, i.r. spectroscopy, thermal analyses, conductivity measurements and variable-temperature magnetochemical measurements to the temperature of liquid nitrogen. The complexes can be characterized as high-spin distorted octahedral FeIII bridged by carboxylic acids. The dicarboxylic or tricarboxylic acids play a role as bridges for weak antiferromagnetic intramolecular exchange. The antiferromagnetic coupling parameters J vary in the -1.99 to -5.47cm-1 range for the dimers, whilst the values are -2.35 and -1.42cm-1 for the salen and saloph trimers, respectively. One complex, namely [{Fe(saloph)}2(2,5-dicarpy)]middot H2O, obeys the Curie-Weiss law.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1006990925318
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  • 3
    Electronic Resource
    Electronic Resource
    Coordination compounds of nickel with trithiocyanuric acid. Part II. Crystal and molecular structure of [Ni(taa)(ttcH)] (taa=tris-(2-aminoethyl)amine, ttcH3=trithiocyanuric acid) (1999)
    Springer
    Transition metal chemistry 24 (1999), S. 239-243 
    Details
    ISSN: 1572-901X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Coordination compounds of compositions [Ni(taa) (ttcH)] (1), [Ni(teta)(ttcH)] (2), [Ni(sper)(ttcH)]·5H2O (3), [Ni(chxn)2(ttcH)] (4) and [Ni(1,3-pn)(ttcH)(H2O)] (5), where taa=tris-(2-aminoethyl)-amine, ttcH3= trithiocyanuric acid [1,3,5-triazine-2,4,6-trithione], teta=triethylenetetramine, sper= spermine [(N,N′-bis-(3-aminopropyl)-1,4-butanediamine], chxn=trans-1,2-diaminocyclohexane, 1,3-pn=1,3-diaminopropane, (the ligands are depicted in Scheme 1) have been prepared and characterized by C, H, N, S analysis, i.r. and u.v.-vis. spectroscopies and magnetochemical measurements. Those complexes containing water were also studied by thermal analysis. X-ray analysis of [Ni-(taa)(ttcH)] revealed a trigonal bipyramidal geometry around the NiII centre, which can be increased to octahedral by a non-bonding interaction between Ni and the S atom of the trithiocyanuric dianion [Ni—S(3)= 2.6650(10) Å].
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1006970510290
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