Electronic and magnetic metal–metal interactions in dinuclear oxomolybdenum(V) complexes across bis-phenolate bridging ligands with different spacers between the phenolate termini: ligand-centred vs. metal-centred redox activity

2001 ◽  
pp. 1401-1414 ◽  
Author(s):  
Simon R. Bayly ◽  
Elizabeth R. Humphrey ◽  
Helena de Chair ◽  
Cecilia G. Paredes ◽  
Zoe R. Bell ◽  
...  
Keyword(s):  
Redox Activity ◽  
Bridging Ligands ◽  
Metal Interactions ◽  
Metal Metal ◽  
Magnetic Metal

Mono- and binuclear molybdenum and tungsten complexes containing asymmetric bridging ligands: effects of ligand conjugation and conformation on metal-metal interactions

1993 ◽  
Vol 32 (10) ◽  
pp. 2145-2155 ◽  
Author(s):  
Amitava Das ◽  
John C. Jeffery ◽  
John P. Maher ◽  
Jon A. McCleverty ◽  
Erik Schatz ◽  
...  
Keyword(s):  
Bridging Ligands ◽  
Metal Interactions ◽  
Tungsten Complexes ◽  
Metal Metal ◽  
And Tungsten

Keep it tight: a crucial role of bridging phosphine ligands in the design and optical properties of multinuclear coinage metal complexes

2021 ◽  
Author(s):  
Aleksandra V. Paderina ◽  
Igor O Koshevoy ◽  
Elena V. Grachova
Keyword(s):  
Optical Properties ◽  
Metal Complexes ◽  
Crucial Role ◽  
Phosphine Ligands ◽  
Bridging Ligands ◽  
Coinage Metal ◽  
Metal Interactions ◽  
Metal Metal ◽  
State 1

The copper subgroup metal ions in the oxidation state +1 are classical candidates for the aggregation via non-covalent metal–metal interactions, which are supported by a number of the bridging ligands....

Multielectron Redox Activity Facilitated by Metal−Metal Interactions in Early/Late Heterobimetallics: Co/Zr Complexes Supported by Phosphinoamide Ligands

2009 ◽  
Vol 48 (13) ◽  
pp. 6251-6260 ◽  
Author(s):  
Bennett P. Greenwood ◽  
Scott I. Forman ◽  
Gerard T. Rowe ◽  
Chun-Hsing Chen ◽  
Bruce M. Foxman ◽  
...  
Keyword(s):  
Redox Activity ◽  
Metal Interactions ◽  
Metal Metal ◽  
Early Late

4,5-Di(2-pyridyl)-1,2,3-triazolate: the elusive member of a family of bridging ligands that facilitate strong metal–metal interactions

2008 ◽  
pp. 2534 ◽  
Author(s):  
Chris Richardson ◽  
Christopher M. Fitchett ◽  
F. Richard Keene ◽  
Peter J. Steel
Keyword(s):  
Bridging Ligands ◽  
Metal Interactions ◽  
Metal Metal

Nature of metal-metal interactions in systems with bridging ligands. 1. Electronic structure and bonding in octacarbonyldicobalt

1991 ◽  
Vol 30 (5) ◽  
pp. 1079-1086 ◽  
Author(s):  
Arthur A. Low ◽  
Kathryn L. Kunze ◽  
P. J. MacDougall ◽  
Michael B. Hall
Keyword(s):  
Electronic Structure ◽  
Bridging Ligands ◽  
Metal Interactions ◽  
Metal Metal ◽  
Structure And Bonding

Tuning the Redox Activity of Metal−Organic Frameworks for Enhanced, Selective O2 Binding

2019 ◽  
Author(s):  
Andrew Rosen ◽  
M. Rasel Mian ◽  
Timur Islamoglu ◽  
Haoyuan Chen ◽  
Omar Farha ◽  
...  
Keyword(s):  
Density Functional ◽  
Metal Organic Frameworks ◽  
Redox Activity ◽  
Screening Methods ◽  
Bridging Ligands ◽  
Metal Centers ◽  
Computational Screening ◽  
Open Metal Sites ◽  
Metal Organic ◽  
Unsaturated Metal Sites

<p>Metal−organic frameworks (MOFs) with coordinatively unsaturated metal sites are appealing as adsorbent materials due to their tunable functionality and ability to selectively bind small molecules. Through the use of computational screening methods based on periodic density functional theory, we investigate O<sub>2</sub> and N<sub>2</sub> adsorption at the coordinatively unsaturated metal sites of several MOF families. A variety of design handles are identified that can be used to modify the redox activity of the metal centers, including changing the functionalization of the linkers (replacing oxido donors with sulfido donors), anion exchange of bridging ligands (considering μ-Br<sup>-</sup>, μ-Cl<sup>-</sup>, μ-F<sup>-</sup>, μ-SH<sup>-</sup>, or μ-OH<sup>-</sup> groups), and altering the formal oxidation state of the metal. As a result, we show that it is possible to tune the O<sub>2</sub> affinity at the open metal sites of MOFs for applications involving the strong and/or selective binding of O<sub>2</sub>. In contrast with O<sub>2</sub> adsorption, N<sub>2</sub> adsorption at open metal sites is predicted to be relatively weak across the MOF dataset, with the exception of MOFs containing synthetically elusive V<sup>2+</sup> open metal sites. As one example from the screening study, we predict that exchanging the μ-Cl<sup>-</sup> ligands of M<sub>2</sub>Cl<sub>2</sub>(BBTA) (H<sub>2</sub>BBTA = 1<i>H</i>,5<i>H</i>-benzo(1,2-d:4,5-d′)bistriazole) with μ-OH<sup>-</sup> groups would significantly enhance the strength of O<sub>2</sub> adsorption at the open metal sites without a corresponding increase in the N<sub>2</sub> affinity. Experimental investigation of Co<sub>2</sub>Cl<sub>2</sub>(BBTA) and Co<sub>2</sub>(OH)<sub>2</sub>(BBTA) confirms that the former exhibits only weak physisorption, whereas the latter is capable of chemisorbing O<sub>2</sub> at room temperature. The chemisorption behavior is attributed to the greater electron-donating character of the μ-OH<sup>-</sup><sub> </sub>ligands and the presence of H-bonding interactions between the μ-OH<sup>-</sup> bridging ligands and the O<sub>2</sub> adsorbate.</p>

scholarly journals Heterobimetallic lanthanide‐coinage metal compounds featuring possible metal‐metal interactions in the exited state

2021 ◽  
Author(s):  
Peter Werner Roesky ◽  
Milena Dahlen ◽  
Niklas Reinfandt ◽  
Chengyu Jin ◽  
Michael T. Gamer ◽  
...  
Keyword(s):  
Metal Compounds ◽  
Coinage Metal ◽  
Metal Interactions ◽  
Metal Metal
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