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

Crystallographic statistics in chemical physics

Aus dem System FeCl3–AsPh3–Acetonitril wurden bei erhohter Temperatur Komplexe der Zusammensetzung FeCl3(OAsPh3)1,5 und FeCl3(OAsPh3)2 isoliert (PPh3 = Triphenylphosphin; OPPh3 = Triphenylphosphinoxid; AsPh3 = Triphenylarsin; OAsPh3 = Triphenylarsinoxid) In Gegenwart von Eisen(III)-chlorid-Komplexen kommt es im Verlauf der Reaktion zur Oxydation von AsPh3 zu OAsPh3 Auf Grund der magnetischen und spektralen Daten wird die Stereochemie der isolierten Komplexe besprochen



Oxidation of Triphenylarsine in Iron(III) Chloride Complexes



Complexes of the composition of FeCl3(OAsPh3)1,5 and FeCl3(OAsPh3)2 were separated at increased temperature from the system FeCl3–AsPh3–acetonitrile In the course of the reaction in the presence of iron(III) chloride complexes oxidation of AsPh3 takes place to give OAsPh3 On the basis of magnetic and spectral data the sterochemistry of the separated complexes is discussed

Die Oxydation von Triphenylarsin in Eisen(III)‐chlorid‐Komplexen

Abstract In this review the structural parameters of 20 mononuclear Pt(II) coordination complexes with an inner coordination sphere of PtPX3 (X=O, N, Cl, S, I or Te) are summarized and analyzed. The P-donor ligands are organomonophosphines. These complexes are crystallized in two crystal systems: monoclinic and triclinic (each ×10). The X-donor ligands are mono-: O, N, C, S, or I; bi-: O/O; N/N; S/S and ter-: N/N/N; S/S/S, or Te/Te/Te-dentate. The mean Pt-X (homo-trans) bond distances elongate in the order: 2.00 Å (O)<2.02 Å (N)<2.302 Å (Cl)<2.325 Å (S)<2.590 Å (Te)<2.638 Å (I). The mean Pt-P (trans to X) bond distances are in the order: 2.218 Å (X=N)<2.230 Å (Cl)<2.233 Å (O)<2.258 Å (I)<2.287 Å (S)<2.308 Å (Te). The chelating ligands form four-, five-, and six-membered metallocyclic rings.

Organomonophosphines in PtPX3 (X=O, N, Cl, S, I, or Te): structural aspects

The organogermanium chemistry covers huge fields, as shown by a survey covering the crystallographic and structural data of over four hundred and fifty examples. Over 10 percent of those compounds exist as distortion isomers (around 97 %) and ligand isomers (around 3 %). These are discussed in term of coordination around the Ge(II), Ge(IV) and Ge2 +3 atoms, and correlations are drawn between donor atoms, bond lengths and bond angles. Distortion isomers dif- fer by degree of distortion in Ge - L distances and L-Ge-L angles. Interestingly, in the chemistry germanium coordination complexes besides configuration isomers, also distortion isomers dominate.

Isomerism in the Chemistry of Organogermanium Compounds (Part II)

Abstract This review summarizes almost 40 structures of polymeric Fe(M), where M=Mg, Ca, Sr, Ba, In, Te, Ge, Sn, Bi, Zn, Cd and Hg complexes. The complexes crystallized in the monoclinic, tetragonal, orthorhombic and triclinic classes, from which the monoclinic by far prevails (∼50%). The most common ligands are with O, N and C donor atoms. The iron atoms are found in the oxidation states 0, +2 and +3, with +3 being the most common. In most complexes the iron(0) is 5-, iron(II) and iron(III) are 6-coordinated, but there are examples of 3-, 5- and even 7-coordinated complexes. The inner coordination spheres about the M atoms range from 3 to 11. The structures are discussed in terms of the coordination about the metal atoms, and correlations are outlined between donor atoms, bond lengths and interbond angles.

Milan Melnik

Papers

Crystallographic statistics in chemical physics

Die Oxydation von Triphenylarsin in Eisen(III)‐chlorid‐Komplexen

Organomonophosphines in PtPX3 (X=O, N, Cl, S, I, or Te): structural aspects

Isomerism in the Chemistry of Organogermanium Compounds (Part II)

Structural characterization of heteropolymeric iron and main group metal complexes