1,721,007 research outputs found
Acetylene as a ligand on clusters: An accurate determination of the crystal and molecular structure of (Cp)2Ni2Fe(CO)3(μ3-C2H2) and of (CP)2Ni2Fe2(CO)6(μ4-C2H2)
No full textThe Cp)2Ni2Fe(CO)3(μ3-C2H2) and Cp)2Ni2Fe(CO)3(μ3-C2H2) (B) complexes have been synthesized and spectroscopically characterized. An accurate X-ray study and a comparison with related structures shows that the substituents of the alkyne ligands exert considerable effects on the bonding parameters. Crystal data for complex A, monoclinic space group P21/n, a = 8.418(1), b = 15.779(2), c = 14,493(1) Å, β = 91.64(1)°, Z = 4, 2753 observed reflections, R = 0.022; crystal data for complex B, monoclinic space group C2/c, a = 16.2189(7), b = 7.445(3), c = 25.745(5) Å, β = 103.74(3), Z=8, 1853 observed reflections, R = 0.051. © 1994 Plenum Publishing Corporation
Normal-phase and reversed-phase liquid chromatographic behaviour and particle beam mass spectrometric characterization of alkyne-substituted iron-carbonyl clusters
No full textApplications of high-performance liquid chromatography to metal carbonyl and cluster chemistry
No full textHigh-performance liquid chromatography of triangular ruthenium clusters containing bidentate group-15 donor ligands
No full textDehydration reactions of 2-methyl-3-butyn-2-ol in the presence of Fe3(CO)12. Spectroscopic characterization of two closo and nido pentagonal bipyramidal complexes and crystal structure of the allenylidene cluster Fe3(CO)9(mu-CO)(mu3,eta2-C=C=CMe
No full textBehaviour of tri- and tetranuclear iron and nickel clusters in high performance liquid chromatography
No full textMetal Clusters as Models of Intermediates in Organic Syntheses. Reaction of Terminal Dialkynes NR(CMe2C=CH)2 (R = H or Me) with [Ru3(CO)12]
No full textBehaviour of mono- bi- and trinuclear Group VI, VII and VIII metal carbonyl complexes in high-performance liquid
No full text
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
- …
