The rhodium complexes [RhCl3(NH3)3], (I), and [Rh(NO3)3(NH3)3], (II), are built from octahedral RhX3(NH3)3 units; in (I) they are isolated units, while in (II) the units are stacked in columns with partially filled sites for the Rh atoms. The octahedra of monoclinic crystals of (I) are linked by N-H···Cl hydrogen bonds and the Rh(3+) ions are located on the mirror planes. In the trigonal crystals of (II), the discontinuous `columns' along the threefold axis are linked by N-H···O hydrogen bonds. The structure of (I) has been solved using laboratory powder diffraction data, the structure of (II) has been solved by single-crystal methods using data from a merohedrally twinned sample. Both compounds possess low solubility in water.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1107/S010827011303076X | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Water-Soluble Fluorescent Sensors for Quantification of Trace Cisplatin in Body Fluids from Clinical Cancer Patients.
J Am Chem Soc
December 2024
Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Xi'an Key Laboratory of Functional Supramolecular Structure and Materials, College of Chemistry & Materials Science, Northwest University, Xi'an, Shaanxi Province 710127, China.
Accurate quantification of cisplatin (cDDP) in body fluids (blood, urine, and ascites) is crucial in monitoring therapeutic processes, assessing drug metabolism, and optimizing treatment schedules for cancer patients. Nonetheless, due to the inherent fluorescence and complexity of the body fluid matrix, along with the low cDDP concentrations in these fluids during treatment, using fluorescent sensors for fluid detection remains a subject of ongoing research. Herein, a series of water-soluble cDDP-activatable fluorescent sensors was rationally constructed by introducing thioether groups to the xanthene skeleton based on the chalcogenophilicity of platinum.
View Article and Find Full Text PDFElucidation of Electronic Structures of Mixed-Valence States Induced by dσ-π Charge Delocalization in Linear-Chain and Discrete Rhodium-Dioxolene Tetrameric Complexes.
Inorg Chem
December 2024
Department of Chemistry, Natural Science and Technology, Shimane University, 1060, Nishikawatsu, Matsue, Shimane 690-8504, Japan.
We have successfully synthesized unique linear-chain and discrete mixed-valence tetrameric complexes, {[Rh(3,6-DBDiox-4,5-SCO)(CO)]·hexane} () and [Rh(3,6-DBDiox-4,5-SCO)(CO)] (), by carefully choosing the solvent. X-ray photoelectron spectra (XPS) confirm that and are in the Rh(I,II) mixed-valence state. Analyses of the metrical oxidation state (MOS) of dioxolene ligands reveal that in and , the electron density corresponding to one electron per tetramer is transferred from Rh(I) ions to semiquinonato ligands, and the transferred charge is delocalized throughout the four dioxolene ligands.
View Article and Find Full Text PDFEnhancing the charge transport and luminescence properties of ethyl 4-[()-(2-hydroxy-4-methoxyphenyl)methyleneamino]benzoate through complexation: a DFT and TD-DFT study.
RSC Adv
June 2024
Department of Chemistry, Faculty of Science, The University of Bamenda P. O. Box 39, Bambili Bamenda Cameroon
Organic light emitting diode (OLED) and organic solar cell (OSC) properties of ethyl 4-[()-(2-hydroxy-4-methoxyphenyl)methyleneamino]benzoate (EMAB) and its Pt, Pd, Ni, Ir, Rh, and Zn complexes have been theoretically studied herein. Geometry optimizations have been performed the rSCAN-3c composite method while single-point calculations have been carried out at the PBE0-D3(BJ)/def2-TZVP level of theory. Results have shown that complexation with selected metal ions improves hole and electron transfer rates in Pt[EMAB] and Rh[EMAB] .
View Article and Find Full Text PDFReduction of precious metal ions in aqueous solutions by contact-electro-catalysis.
Nat Commun
May 2024
CAS Center for Excellence in Nanoscience, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, China.
Article Synopsis
- Precious metals are essential for modern technology, but their scarcity raises concerns about cost, lifecycle, and reuse.
- Recently, a new method called contact-electro-catalysis (CEC) was developed, which uses ultrasonic techniques to efficiently reduce and extract various metals without the use of traditional metal catalysts.
- This method has shown promise in extracting gold from low-concentration solutions and offers a metal-free, selective, and recyclable approach to recovering valuable metals from electronic waste.
Unraveling the low-temperature activity of Rh-CeO catalysts in CO oxidation: probing the local structure and Red-Ox transformation of Rh species.
Phys Chem Chem Phys
January 2023
Boreskov Institute of Catalysis, pr. Lavrentieva 5, 630090, Novosibirsk, Russia.
The local structure of the active sites is one of the key aspects of establishing the nature of the catalytic activity of the systems. In this work, a detailed structural investigation of the Rh-CeO catalysts prepared by the co-precipitation method was carried out. The application of a variety of physicochemical methods such as XRD, Raman spectroscopy, XPS, TEM, TPR-H, and XAS revealed the presence of highly dispersed Rh species in the catalysts: Rh single ions and RhO clusters.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!