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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.


Papers
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TL;DR: The coordination chemistry of germanium covers quite bulk fields, as shown by a survey covering the crystal- lographic and structural data of over two hundred examples as mentioned in this paper, and about ten percent of those complexes exist as distortion iso- mers.
Abstract: The coordination chemistry of germanium covers quite bulk fields, as shown by a survey covering the crystal- lographic and structural data of over two hundred examples. About ten percent of those complexes exist as distortion iso- mers and are summarised. These are discussed in terms of the coordination around the germanium(I), germanium(II) and germanium(IV) atoms, and correlations are drawn between donor atoms, bond distances and interbond angles. Distortion isomers differing only by degree of distortion in Ge - L and L - Ge - L angles by far prevail. There is an example, which contains within one crystal distortion and coordination isomers, which is rarity.

1 citations

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TL;DR: In this paper, a review of polymeric FeM complexes is presented, where the inner coordination spheres about the Fe(0) atom are tetrahedral or sandwiched (FeC4) or FeC10), Fe(II) atoms are six-coordinated, and Fe(III) are six or even sevencoordinated.
Abstract: This review covers crystallographic and structural data for almost fifty polymeric FeM complexes (M = transition Cu, Ag, Au, Mo, W, Mn, Co, Ni and Pt and lanthanide elements Sm, Er and Yb) where iron is involved in polymeric chains. The complexes are for the most part yellow or black, but there are complexes of brown, orange, red, purple, blue and green colour. The complexes crystallized in the monoclinic (by far prevails), triclinic, tetragonal, orthorhombic, trigonal, hexagonal and rhombohedral crystal classes. The iron atoms are found in oxidation states 0, +2 and +3, of which +3 by far prevails. The inner coordination spheres about the Fe(0) atom are tetrahedral (FeC4) or sandwiched (FeC10), Fe(II) atoms are six-coordinated, and Fe(III) are six or even seven-coordinated. The inner coordination about M atoms range from four- through six- to eight-coordinated. The shortest Fe-Fe, Fe-M (transition) and Fe-M (lanthanide) and M-M separations are: 8.08 A, 3.033 A for Fe-Cu, 3.010 A for Fe-Yb and 2.505 A for Mo-Mo.

1 citations


Cited by
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TL;DR: A comprehensive review of current research activities that center on the shape-controlled synthesis of metal nanocrystals, including a brief introduction to nucleation and growth within the context of metal Nanocrystal synthesis, followed by a discussion of the possible shapes that aMetal nanocrystal might take under different conditions.
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.

4,927 citations

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2,151 citations

Journal ArticleDOI
TL;DR: The state of the art in the field of antimicrobial polymeric systems during the last decade is described in this paper, where a classification of the different materials is carried out dividing basically those synthetic polymers that exhibit antimicrobial activity by themselves; those whose biocidal activity is conferred through their chemical modification; those that incorporate antimicrobial organic compounds with either low or high molecular weight; and those that involve the addition of active inorganic systems.

1,063 citations

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TL;DR: In this article, the role of the shape of coordinating ligands and of different metal ions in directing the synthesis totally or preferentially towards mono-, di- or poly-nuclear entities is discussed.

871 citations