search results
results of search on CRYSTALLOGRAPHY JOURNALS ONLINE
9 citations found for Leung, H.
Search for Leung, H. in the World Directory of Crystallographers
Results 1 to 9, sorted by name:
![e logo](https://journals.iucr.org/logos/jicons/e_36x36.png)
The title compound, C24H15Br3, crystallizes in the orthorhombic space group P212121 with three molecules in the asymmetric unit. The crystal was found to be inversion twinned and the appropriate twin law was applied, resulting in R1 = 0.035 for the experimental data measured at T = 136 K.
![a logo](https://journals.iucr.org/logos/jicons/a_36x36.png)
![m logo](https://journals.iucr.org/logos/jicons/m_36x36.png)
3D electron diffraction (3DED) was used to elucidate the structure of a new ninth polymorph of indomethacin from an amorphous solid dispersion, which are product formulations used to improve the dissolution performance of active pharmaceutical ingredients with poor aqueous solubility. Insights from the structure solution allowed for a simpler crystallization route for this polymorph to be deduced, demonstrating the relevance of 3DED within drug development.
![a logo](https://journals.iucr.org/logos/jicons/a_36x36.png)
![e logo](https://journals.iucr.org/logos/jicons/e_36x36.png)
The title compound, [Ru2Cl3(C10H14)2]2[Hg2Cl6], contains two [{Ru(C10H14)}2(μ-Cl)3]+ cations and one [Hg2Cl6]2− anion. In the cation, two [Ru(η6-p-cymene)] fragments are linked by three bridging Cl atoms. The anion lies on a twofold rotation axis. The coordination geometry of ruthenium is pseudo-octahedral, while the coordination around mercury is highly distorted tetrahedral. The average Ru—Cl bond length is 2.435 Å. The average bridging and terminal Hg—Cl distances are 2.664 and 2.435 Å, respectively.
![e logo](https://journals.iucr.org/logos/jicons/e_36x36.png)
In the cation of the title compound, [Rh2Cl3(C10H15)2]BF4, two Rh(η5-C5Me5) fragments are linked by three bridging Cl atoms. Each rhodium center has a pseudo-octahedral coordination geometry, with a C5Me5 group occupying three positions and three Cl atoms completing the coordination. The average Rh—Cl bond length is 2.450 Å and the average Rh—Cl—Rh bond angle is 81.6°.
![e logo](https://journals.iucr.org/logos/jicons/e_36x36.png)
In the title compound, [Hg2Cl4(C18H33P)2], there are two independent centrosymmetric HgII dimers, the asymmetric unit containing half of each. The coordination about each Hg atom is highly distorted tetrahedral, three sites being occupied by one terminal and two bridging Cl atoms, and the remaining site by the P atom of a tricyclohexylphosphine ligand (PCy3). The Hg atoms in the dimers are 3.792 (3) and 3.940 (3) Å apart and are thus non-bonded.
![c logo](https://journals.iucr.org/logos/jicons/c_36x36.png)
![c logo](https://journals.iucr.org/logos/jicons/c_36x36.png)