Open Access
Access granted
Subscription Access
Vol 42, No 10 (2016)
- Year: 2016
- Articles: 5
- URL: https://journals.rcsi.science/1070-3284/issue/view/13277
The Issue is Devoted to Carboxylate Complexes of Transition Metals
The formation of heterometallic molecular architectures with 3d-metal atoms linked by carboxylate bridges with alkali and alkaline-earth metal ions or with lanthanides
Abstract
Data on the synthesis of carboxylate complexes combining transition 3d metals and diverse heterometals (Li-, Mg-, and Ln-M(3d)) are reviewed. The factors that are essential to the structure of heterometallic complexes were revealed. Stable metal-containing moieties capable of forming both molecular and polymeric structures were identified.
621-634
The structural organization of oligonuclear cobalt(II, III) and cobalt(III) carboxylates
Abstract
The review deals with the topology of homonuclear carboxylate complexes of cobalt(II, III) and cobalt(III) whose structures are built from the monocarboxylate anions RCOO– (R is a radical containing no electron-donating substituents), water, and its deprotonated forms.
635-646
Trifluoroacetate complexes of 3d elements: Specific features of syntheses and structures
Abstract
Data on the syntheses and structures of trifluoroacetates of 3d elements mainly based on our results are reviewed. Specific features of the coordination chemistry of mono-, oligo-, and polynuclear trifluoroacetate complexes are successively considered. Special attention is given to oxo- and fluorotrifluoroacetates containing the trinuclear triangular fragment as a structural unit. Structural features of trifluoroacetates compared to other carboxylates are discussed.
647-661
Mixed ligand acetate, propionate, and pivalate complexes of rare earth metals with monoethanolamine: A new approach to the synthesis, composition, structure, and use for the preparation of oxide materials
Abstract
Compositions of mixed ligand acetate, propionate, and pivalate complexes of rare earth metals of the cerium and yttrium groups with monoethanolamine are predetermined by the synthesis conditions and the nature of the carboxylate ligand and rare earth metal ion. Solid mixed ligand complexes [Ln(Piv)5(MEAH)][MEAH] and [Ln(Piv)3(MEA)], homoligand complexes [Ln(Piv)3] (HPiv is 2,2-dimethylpropionic (pivalic) acid), and gel-like hydroxo complexes [Ln(Carb)3–x–y(NO3)x-(OH)y(MEA)w(H2O)z] (HCarb is acetic (HAc) or propionic (HProp) acid) are isolated using original synthesis procedures involving ion pairs [MEAH]+[Carb]– (MEA is monoethanolamine). The compounds are studied by IR spectroscopy, 1H NMR spectroscopy, elemental and thermal analyses, and mass spectrometry. Specific features for the complex formation of rare earth metal pivalates with MEA are additionally studied using quantum-chemical simulation.
662-678
Photoluminescence of lanthanide aromatic carboxylates
Abstract
Energy transfer processes affecting the luminescence properties and methods of controlling them by a change in the compositions and structures of luminescent compounds are analyzed in the review on example of lanthanide aromatic carboxylates. The analysis demonstrates clearly how the understanding of the physical regularities of the processes leading to luminescence makes it possible to perform the purposeful design of organic ligands and their brightly luminescing complexes with lanthanides.
679-694