Formation of a hydrogen oxide bridging ligand in the hydrolysis of a mononuclear iron(III) complex: support by Moessbauer spectroscopy

1984 ◽  
Vol 23 (14) ◽  
pp. 1993-1994 ◽  
Author(s):  
Carl J. Carrano ◽  
K. Spartalian
Keyword(s):  
Moessbauer Spectroscopy ◽  
Mononuclear Iron ◽  
Bridging Ligand ◽  
Hydrogen Oxide ◽  
Hydrolysis Of

scholarly journals Synthesis and structural analysis of polynuclear silver(I) complexes with 4,7-phenanthroline

2019 ◽  
Vol 84 (7) ◽  
pp. 689-699 ◽  
Author(s):  
Ivana Stanojevic ◽  
Nada Savic ◽  
Aurélien Crochet ◽  
Katharina Fromm ◽  
Milos Djuran ◽  
...  
Keyword(s):  
Solid State ◽  
Room Temperature ◽  
Volume Ratio ◽  
Spectroscopic Techniques ◽  
X Ray Diffraction ◽  
X Ray ◽  
Bridging Ligand ◽  
Coordination Sites ◽  
Hydrolysis Of

New polynuclear silver(I) complexes, [Ag(CF3SO3)(4,7-phen)(CH3CN)]n (1) and [Ag(PO2F2)(4,7-phen)]n (2), were synthesized by the reaction of 4,7-phenanthroline (4,7-phen) and the corresponding AgX salt (X = CF3SO3 - and PF6 -) in 1:2 mole ratio, respectively, in methanol/acetone (1:1 volume ratio) at room temperature. The characterization of the complexes was established on the basis of elemental microanalysis, IR and NMR (1H and 13C) spectroscopic techniques, while their crystal structures were determined by single-crystal X-ray diffraction analysis. The results of spectroscopic and crystallographic analyses revealed that in these complexes, 4,7-phen behaves as a bridging ligand between two metal ions, while the remaining coordination sites of the Ag(I) ions are occupied by the oxygen atom of CF3SO3 - and an acetonitrile nitrogen atom in 1 or by two oxygen atoms from two PO2F2 -, formed after hydrolysis of PF6 -, in 2. In the solid state, both complexes are coordination polymers in which the geometry around the Ag(I) ions is distorted tetrahedral.

A new bridging ligand, the hydrogen oxide ion (H3O2-)

1981 ◽  
Vol 103 (22) ◽  
pp. 6741-6742 ◽  
Author(s):  
Avi Bino ◽  
Dan Gibson
Keyword(s):  
Bridging Ligand ◽  
Hydrogen Oxide ◽  
Oxide Ion

Tailored Molecular Precursors of Yttrium Oxide Using Functional Alcohols and Acetylacetone as Modifiers

1990 ◽  
Vol 180 ◽  
Author(s):  
Liliane G. Hubert-Pfalzgraf ◽  
Olivier Poncelet ◽  
Jean-Claude Daran
Keyword(s):  
Sol Gel ◽  
Advanced Materials ◽  
X Ray Diffraction ◽  
X Ray ◽  
Molecular Precursors ◽  
Process Comparison ◽  
Bridging Ligand ◽  
Sol Gel Process ◽  
Hydrolysis Of ◽  
Insight Into

ABSTRACTYttrium is involved as oxide in a variety of advanced materials. Hydrolysis of its most common alkoxide, yttrium oxoisopropoxide Y5O(OiPr)13 , is difficult to control as a result of the high electropositivity of the metal. Functional alcohols such as 2-methoxyethanol and acetylacetone have thus been used as modifiers. These tailored precursors have been fully characterized (single crystal X-Ray diffraction, IR, NMR. ). The tendency of methoxyethanol to act as a bridging ligand and to stabilize high oligomers - Y(OC2H4OMe)3 is a decamer - gives some insight into its behavior as “network builder”. The unexpected cleavage of acetylacetone offers a route to an interesting acetatoacetylacetonate derivative, Y2(OAc)2(acac)4(H2O)2 , but also suggest that this classical “modifier” could be affected by the hydrolysis-polycondensation reactions of the metallic species during the sol-gel process. Comparison of the hydrolysis behavior of the different precursors was performed.

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