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H3O2- bridging in a Pt(IV) nucleobase complex leading to infinite chains: trans,trans,trans-[Pt(NH3)(2)-(1-MeU)(2)(H3O2)](n)(NO3)(n)center dot(4H(2)O)(n) (1-MeU=1-methyluracilate)
No full textThe X-ray crystal structure determination of a Pt(IV) nucleobase complex, trans,trans,trans-[Pt(NH3)(2)(1-MeU)(2)(H3O2)](n)(NO3)(n) .(4H(2)O)(n) (1-MeU = 1-methyluracilate-N3) is reported. The compound, obtained upon recrystallization of trans,trans,trans-[Pt(NH3)(2)(1-MeUH)(2)(OH)(2)](NO3)(2) (1-MeUH = neutral 1-methyluracil-N3) from water, crystallizes in the triclinic system, space group P-1 with two independent cations in the unit cell: a = 7.3023(8), b = 10.1470(20), c = 13.4220(20) Angstrom, alpha = 78.800(17), beta = 83.580(9), gamma = 78.930(10)degrees, V = 954.6(3) Angstrom(3), Z = 2. Description of its solid state structure as a H2O2- compound rather than a genuine mixed H2O,OH- complex is based on the presence of very short H bonds of 2.450(6) Angstrom between the oxygens of axial aqua and hydroxo ligands of adjacent Pt(IV) cations, leading to infinite chains
Au(III) binding to C5 of the model nucleobase 1,3-dimethyluracil (Hdmura): Preparation and X-ray crystal structures of trans-K[Au(CN)2Cl(dmura)] and of two derivatives.
No full textGold(III) glycyl–L–histidine dipeptide complexes: Preparation and X–ray structures of monomeric and cyclic tetrameric species
No full textWater wafers: structure and melting of a hydrate inclusion compound of a neutral Pt(IV) complex with 1-methylcytosinato ligands
No full textStrong Metal–Metal bonds between trans–(amine)2PtII and –PdII in heteronuclear complexes of cytosine nucleobases: preparation, X–ray structures and NMR spectroscopy
No full textStructural and solution study on binary peptide and ternary peptide–nucleobase complexes of palladium(II)
No full textMetal–stabilized rare tautomers of nucleobases. 5. Iminooxo tautomer of cytosine coordinated to Pt(II) with metal and nucleobase in syn and anti orientations
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Nucleobase complexes with metal–metal dative bonds: mixed Pt,Pd compounds with bridging 1–methylcytosinato ligands and unprecedented short Pt(II)–Pd(II) contacts
No full textGoing Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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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