Milan Melnik

Bio: Milan Melnik is an academic researcher from University of York. The author has contributed to research in topics: Copper & Crystal structure. The author has an hindex of 26, co-authored 219 publications receiving 2513 citations. Previous affiliations of Milan Melnik include York University & Slovak University of Technology in Bratislava.

Crystal Structures, Spectroscopic and Magnetic Behaviour of Dimeric Copper(II) 2‐Methylthionicotinate Adducts with Dimethylformamide and Dimethylsulfoxide

Abstract: The structural, spectroscopic and magnetic properties of two dimeric complexes, [Cu2(2-MeSnic)4(DMSO)2] (I) and [Cu2(2-MeSnic)4(DMF)2] (II) (where 2-MeSnic = 2-methylthionicotinate, DMF = dimethylformamide and DMSO = dimethylsulfoxide), are reported. The characterization is based on elemental analysis, infrared, electronic and EPR spectra, and magnetic susceptibility measurements over a temperature range of 1.9 — 300 K. Both complexes adopt dimeric paddle-wheel cage structures as revealed by X-ray structure analysis. The dimeric molecule of I is centrosymmetric and centred at the inversion center of the space group P 21/c (Z = 2), while the structure of II contains a crystallographically independent molecule IIa, and a centrosymmetrical molecule IIb which is centred at the inversion centre of the space group P 21/n (Z = 6). Kristallstrukturen, spektroskopisches und magnetisches Verhalten von zweikernigen Kupfer(II)-2-methylthionikotinato-Addukten mit Dimethylformamid und Dimethylsulfoxid Es wird uber die strukturellen, spektroskopischen und magnetischen Eigenschaften von zwei dimeren Komplexen, [Cu2(2-MeSnic)4(DMSO)2] (I) and [Cu2(2-MeSnic)4(DMF)2] (II) (2-MeSnic = 2-methylthionicotinate, DMF = dimethylformamide and DMSO = dimethylsulfoxide) berichtet. Die Charakterisierung erfolgte durch Elementaranalyse, IR-, Elektronen- und EPR-Spektroskopie sowie magnetische Suszeptibilitats-Messungen uber einen Temperaturbereich von 1, 9—300 K. Beide Komplexe haben nach Rontgenstrukturanalyse dimere schaufelradahnliche Kafigstrukturen. Das dimere Molekul I ist zentrosymmetrisch und zentriert im Inversionszentrum der Raumgruppe P21/c, Z = 2. Dagegen enthalt die Struktur von II ein kristallographisch unabhangiges Molekul IIa und ein zentrosymmetrisches Molekul IIb, das im Inversionszentrum der Raumgruppe P21/n, Z = 6, zentriert ist.

Crystallographic and Structural Analysis of Iron Heterometallic Compounds Part II. Heterotrinuclear Compounds

Abstract: The chemistry of iron has an active area of research, particularly in the fields of catalysis and biochemistry. This review includes eighty-five double salts of iron and over eight hundred and fifty heterobinuclear iron compounds of known crystal structure. The heterometal atoms include non transition and transition metals, as well as lanthanides and actinides. Correlations between structural parameters, heterometal and ligand donor atoms are developed and an overall summary of the metal metal distances is given. CONTENTS 0. ABBREVIATIONS

Shape‐Controlled Synthesis of Metal Nanocrystals: Simple Chemistry Meets Complex Physics?

Abstract: Nanocrystals are fundamental to modern science and technology. Mastery over the shape of a nanocrystal enables control of its properties and enhancement of its usefulness for a given application. Our aim is to present a comprehensive review of current research activities that center on the shape-controlled synthesis of metal nanocrystals. We begin with a brief introduction to nucleation and growth within the context of metal nanocrystal synthesis, followed by a discussion of the possible shapes that a metal nanocrystal might take under different conditions. We then focus on a variety of experimental parameters that have been explored to manipulate the nucleation and growth of metal nanocrystals in solution-phase syntheses in an effort to generate specific shapes. We then elaborate on these approaches by selecting examples in which there is already reasonable understanding for the observed shape control or at least the protocols have proven to be reproducible and controllable. Finally, we highlight a number of applications that have been enabled and/or enhanced by the shape-controlled synthesis of metal nanocrystals. We conclude this article with personal perspectives on the directions toward which future research in this field might take.