Mixed-Metal Assemblies Based on Cyanide-Bridged Cubane-Type Mo3CuS4/Mo3S4Clusters and Molybdenum Carbonyls

2009 ◽  
Vol 48 (11) ◽  
pp. 4837-4846 ◽  
Author(s):  
Rosa Llusar ◽  
Ivan Sorribes ◽  
Cristian Vicent
Keyword(s):  
Mixed Metal ◽  
Molybdenum Carbonyls

scholarly journals Lithium-mediated Ferration of Fluoroarenes

2020 ◽  
Vol 74 (11) ◽  
pp. 866-870
Author(s):  
Lewis C. H. Maddock ◽  
Alan Kennedy ◽  
Eva Hevia
Keyword(s):  
Hydrogen Atom ◽  
Organometallic Chemistry ◽  
Room Temperature ◽  
Structural Elucidation ◽  
Side Reactions ◽  
Metal Base ◽  
Lithium Amide ◽  
Mixed Metal ◽  
Important Challenge

While fluoroaryl fragments are ubiquitous in many pharmaceuticals, the deprotonation of fluoroarenes using organolithium bases constitutes an important challenge in polar organometallic chemistry. This has been widely attributed to the low stability of the in situ generated aryl lithium intermediates that even at –78 °C can undergo unwanted side reactions. Herein, pairing lithium amide LiHMDS (HMDS = N{SiMe3}2) with FeII(HMDS)2 enables the selective deprotonation at room temperature of pentafluorobenzene and 1,3,5-trifluorobenzene via the mixed-metal base [(dioxane)LiFe(HMDS)3] (1) (dioxane = 1,4-dioxane). Structural elucidation of the organometallic intermediates [(dioxane)Li(HMDS)2Fe(ArF)] (ArF = C6F5, 2; 1,3,5-F3-C6H2, 3) prior electrophilic interception demonstrates that these deprotonations are actually ferrations, with Fe occupying the position previously filled by a hydrogen atom. Notwithstanding, the presence of lithium is essential for the reactions to take place as Fe II (HMDS)2 on its own is completely inert towards the metallation of these substrates. Interestingly 2 and 3 are thermally stable and they do not undergo benzyne formation via LiF elimination.

A direct solvent-free conversion approach to prepare mixed-metal metal–organic frameworks from doped metal oxides

2021 ◽  
Vol 57 (29) ◽  
pp. 3587-3590
Author(s):  
Beili Yi ◽  
Haojie Zhao ◽  
Yue Zhang ◽  
Xiaomeng Si ◽  
Guanqun Zhang ◽  
...  
Keyword(s):  
Metal Oxides ◽  
Metal Organic Frameworks ◽  
Solvent Free ◽  
Mixed Metal ◽  
Synthesis Strategy ◽  
Metal Metal ◽  
Metal Organic

We propose a novel solvent-free conversion strategy of Pt–ZnO to Pt-ZIF-8. This synthesis strategy may facilitate the discovery of MMOFs that have not been reported previously.

Bimetallic Mixed Metal Oxide (CuO/NiO) In Fusion with Nitrogen-doped Graphene Oxide: An Alternate Approach for Developing Potential Biocarrier

2021 ◽  
pp. 105781
Author(s):  
Periasamy Anbu ◽  
Subash C.B. Gopinath ◽  
Kandasamy Saravanakumar ◽  
Sekar Vijayakumar ◽  
Santheraleka Ramanathan ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Metal Oxide ◽  
Mixed Metal Oxide ◽  
Mixed Metal ◽  
Nitrogen Doped ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene

Tilting and Distortion in Rutile-Related Mixed Metal Ternary Uranium Oxides: A Structural, Spectroscopic, and Theoretical Investigation

2021 ◽  
Vol 60 (4) ◽  
pp. 2246-2260
Author(s):  
Gabriel L. Murphy ◽  
Zhaoming Zhang ◽  
Rebekka Tesch ◽  
Piotr M. Kowalski ◽  
Maxim Avdeev ◽  
...  
Keyword(s):  
Theoretical Investigation ◽  
Uranium Oxides ◽  
Mixed Metal

Rare earth—platinum group mixed metal oxide systems

1994 ◽  
Vol 210 (1-2) ◽  
pp. 177-184 ◽  
Author(s):  
K.M. Cruickshank ◽  
F.P. Glasser
Keyword(s):  
Rare Earth ◽  
Metal Oxide ◽  
Mixed Metal Oxide ◽  
Oxide Systems ◽  
Mixed Metal ◽  
Platinum Group
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