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Thermodynamic Studies on the Complexation of Cobalt(II) with Nitrogen Donor Ligands in Dimethylsulfoxide
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Cobalt(II) Complex Formation with Linear Nitrogen Donors in Dimethylsulfoxide : A Spectroscopic and Calorimetric Investigation
No full textAffinity of Cobalt(II) for Mixed Nitrogen/Oxygen Donors and their Dioxygen Uptake in Dimethylsulfoxide
No full textCo(II) polyamine dioxygen adducts in dimethylsulfoxide and their catalytic activity towards organic substrates
No full textThermodynamics of complexation of cadmium(II) by open-chain N-donor ligands in dimethyl sulfoxide solution
No full textThermodynamic parameters for the complexation of Cd-II by the amines n-butylamine (n-but), ethylenediamine (en), N,N'-dimethylethylenediamine (dmen), N,N,N'-trimethylethylenediamine (trmen), N,N,N',N'-tetramethylethylenediamine (tmen), diethylenetriamine (dien), N,N"-dimethyldiethylenetriamine (dmdien), and N,N,N',N",N"-pentamethyldiethylenetriamine (pmdien) have been determined in dimethyl sulfoxide (DMSO) solution by potentiometric and calorimetric techniques at 298 K and 0.1 mol dm(-3) ionic strength (NEt4ClO4). Only mononuclear complexes are formed, in which the polyamines act predominantly as chelating agents. All the complexes are enthalpy-stabilized, whereas the entropy changes counteract the complexation. The steric requirements of the donors have a strong influence on the stoichiometry and nature of the Cd-II complexes formed. Comparisons are made with data reported for some of these systems in water and with available data on silver(I) complexation by the same amines in DMSO, the latter showing that the selectivity of the ligands towards metal ions is also influenced by N-alkylation
Ligand coordination to Silver(I) in dimethylsulfoxide: comparison of experimental and computational results
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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
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