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.

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

Strong Closed-Shell Interactions in Inorganic Chemistry.

Advances in copper complexes as anticancer agents.

Polymeric materials with antimicrobial activity

The challenge of cyclic and acyclic schiff bases and related derivatives

Tetrakis(μ-3-chloropropanoato)bis(triphenylphosphine oxide)dicopper(II) is formed by the reaction of the phosphine oxide on the parent copper carboxylate. It belongs to the triclinic space group , ...

Spectroscopic, magnetic, biological, and structural characterization of tetrakis(μ-3-chloropropanoato)bis(triphenylphosphine oxide)dicopper(II)

This review covers the heterometallic complexes of lead, and is the first of three reviews. The other two are surveys of about two hundred oxo-acids and halides and nearly four hundred coordination complexes of lead. There are over sixty of heterometallic derivatives in which the heterometal atoms include both transition and non-transition metals, both hard (class A) and soft (class B). The bi-, triand pentanuclear derivatives exhibit the most examples, with tetra-, decaand polynuclear examples also occuring. Both Pb(ll) and Pb(IV) oxidation states are represented, and one decanuclear example with lead in an anionic cluster. The compounds include both organometallic and coordination complexation around the lead and heterometal atoms.

Heterometallic lead coordination and organometallic compounds: classification and analysis of crystallographic and structural data

The synthesis and characterization of Cu(5-Clsal)2(H2O)2 (5-Clsal = 5-chlorosalicylate) are reported. Characterization of the compound was based on elemental analysis, electronic and EPR spectra, and magnetic susceptibility measurement over a temperature range 93–239 K. An X-ray analysis of Cu(5-Clsal)2(H2O)2 was carried out, showing a polymeric chain of copper(II) atoms bridged by pairs of water molecules with Cu-O(bridge) bond lengths of 1.970(2) and 2.718(2)A. The coordination sphere about each copper(II) atom is completed (on the X-axis) by a trans-pair of unidentate 5-chlorosalicylate anions. The bridging oxygen atoms arrange a planar Cu2O2 rhombus. The relationship between degree of distortion and g-values from EPR spectra is also discussed.

Crystal structure, spectral and magnetic behavior of copper(ii)(5-chlorosalicylato)2 (aqua)2

Iron coordination chemistry is an important area of research from both Ν industrial and biological points of view. This review surveys the structural determination of over four hundred complexes of iron, with a range of derivatives from dimers to tetramers and from hexamers to polymers. The number of examples for a given oxidation state of iron increases in the order Fe(2.5) < Fe(3.5) < FeflV) <Fe(I) < Fe(0) < Fe(-I) < Fe(II) < Fe(III). The various coordination geometries are found in increasing number in the order: 7 < 3 < < 4 < 5 < 6 . Only the Fe(II) and Fe(m) oxidation states are found in all of the aforementioned geometries. Mixed oxidation states are found for Fe(II)/Fe(III) and Fe(nyFe(2.5). The most common ligands are oxygen and nitrogen donors. Variations and trends in bond and angles are discussed.

Milan Melnik

Papers

Spectroscopic, magnetic, biological, and structural characterization of tetrakis(μ-3-chloropropanoato)bis(triphenylphosphine oxide)dicopper(II)

Heterometallic lead coordination and organometallic compounds: classification and analysis of crystallographic and structural data

Crystal structure, spectral and magnetic behavior of copper(ii)(5-chlorosalicylato)2 (aqua)2

Structural aspects of iron coordination compounds : part π: dimeric and oligomeric derivatives

Organometallic and carbonyl compounds of cadmium: analysis of crystallographic and structural data