Gram-Scale Synthesis of Monodisperse Gold Colloids by the Solvated Metal Atom Dispersion Method and Digestive Ripening and Their Organization into Two- and Three-Dimensional Structures

2002 ◽  
Vol 124 (10) ◽  
pp. 2305-2311 ◽  
Author(s):  
Savka Stoeva ◽  
Kenneth J. Klabunde ◽  
Christopher M. Sorensen ◽  
Iovka Dragieva
Keyword(s):  
Metal Atom ◽  
Three Dimensional ◽  
Dispersion Method ◽  
Gold Colloids ◽  
Digestive Ripening ◽  
Solvated Metal Atom Dispersion

The crystal structure of gersdorffite (III), a distorted and disordered pyrite structure

1968 ◽  
Vol 36 (283) ◽  
pp. 940-947 ◽  
Author(s):  
P. Bayliss ◽  
N. C. Stephenson
Keyword(s):  
Crystal Structure ◽  
Metal Atom ◽  
Diffraction Data ◽  
Three Dimensional ◽  
Unit Cell ◽  
X Ray Diffraction ◽  
Space Group ◽  
X Ray ◽  
Partially Ordered ◽  
The Ideal

SummaryThe crystal structure of gersdorffite (III) has been examined with three-dimensional Weissenberg X-ray diffraction data. The unit cell is isometric with a 5·6849 ± 0·0003 Å, space group PI, and four formula units per cell. This structure has the sulphur and arsenic atoms equally distributed over the non-metal atom sites of pyrite. All atoms show significant random displacements from the ideal pyrite positions to produce triclinic symmetry, which serves to distinguish this mineral from a disordered cubic gersdorffite (II) and a partially ordered cubic gersdorffite (I). Factors responsible for the atomic distortions are discussed.

scholarly journals Crystal structures and Hirshfeld surface analyses of bis[N,N-bis(2-methoxyethyl)dithiocarbamato-κ2S,S′]di-n-butyltin(IV) and [N-(2-methoxyethyl)-N-methyldithiocarbamato-κ2S,S′]triphenyltin(IV)

2018 ◽  
Vol 74 (3) ◽  
pp. 302-308 ◽  
Author(s):  
Rapidah Mohamad ◽  
Normah Awang ◽  
Nurul Farahana Kamaludin ◽  
Mukesh M. Jotani ◽  
Edward R. T. Tiekink
Keyword(s):  
Crystal Structures ◽  
Metal Atom ◽  
Three Dimensional ◽  
Hirshfeld Surface ◽  
Molecular Structures ◽  
Site Symmetry ◽  
Tetrahedral Geometry ◽  
Twofold Axis ◽  
Distorted Tetrahedral Geometry ◽  
Crystal And Molecular Structures

The crystal and molecular structures of the two title organotin dithiocarbamate compounds, [Sn(C4H9)2(C7H14NO2S2)2], (I), and [Sn(C6H5)3(C5H10NOS2)], (II), are described. Both structures feature asymmetrically bound dithiocarbamate ligands leading to a skew-trapezoidal bipyramidal geometry for the metal atom in (I) and a distorted tetrahedral geometry in (II). The complete molecule of (I) is generated by a crystallographic twofold axis (Sn site symmetry 2). In the crystal of (I), molecules self-assemble into a supramolecular array parallel to (10-1)viamethylene-C—H...O(methoxy) interactions. In the crystal of (II), supramolecular dimers are formedviapairs of weak phenyl-C—H...π(phenyl) contacts. In each of (I) and (II), the specified assemblies connect into a three-dimensional architecture without directional interactions between them. Hirshfeld surface analyses confirm the importance of H...H contacts in the molecular packing of each of (I) and (II), and in the case of (I), highlight the importance of short methoxy-H...H(butyl) contacts between layers.

scholarly journals Bis(acetato-κO)bis(thiourea-κS)cobalt(II)

2014 ◽  
Vol 70 (3) ◽  
pp. m78-m78
Author(s):  
Martin Lutz
Keyword(s):  
Hydrogen Bonds ◽  
Metal Atom ◽  
Title Compound ◽  
Three Dimensional ◽  
Tetrahedral Coordination ◽  
Coordination Environment ◽  
Dimensional Network ◽  
Distorted Tetrahedral Coordination

The title compound, [Co(CH3COO)2(CH4N2S)2], is isotypic with the corresponding ZnIIcomplex. The metal atom is in a distorted tetrahedral coordination environment with the two S atoms from two thiourea ligands and two O atoms from two acetate anions as the coordinating atoms. All H atoms of the thiourea ligands are involved in N—H...O and N—H...S hydrogen bonds, leading to a three-dimensional network.

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