Synthesis and Structure of [Cp*Ru(CO)2(μ-H){RuFe3(CO)9}]: An Unusual Mixed-Metal Tetrahedral Cluster with an Exopolyhedral Metal Fragment

2011 ◽  
Vol 30 (1) ◽  
pp. 191-194 ◽  
Author(s):  
K. Geetharani ◽  
Shubhankar Kumar Bose ◽  
Sundargopal Ghosh
Keyword(s):  
Tetrahedral Cluster ◽  
Mixed Metal ◽  
Metal Fragment

The formation of mixed metal aminophosphinidene clusters via reactions of terminal chloroaminophosphido complexes with Co2(CO)8

2003 ◽  
Vol 81 (11) ◽  
pp. 1149-1156 ◽  
Author(s):  
Javier Sánchez-Nieves ◽  
Brian T Sterenberg ◽  
Konstantin A Udachin ◽  
Arthur J Carty
Keyword(s):  
Key Words ◽  
Tetrahedral Cluster ◽  
Mixed Metal ◽  
Cobalt Cluster ◽  
Molybdenum Cluster ◽  
Cluster 2

Reactions of terminal chloroaminophosphido complexes with Co2(CO)8 have been examined. The ruthenium phosphido complexes [Cp*Ru(CO)2{P(Cl)TMP}] (1a) and [CpRu(CO)2{P(Cl)TMP}] (1b) (TMP = 2,2,6,6-tetramethylpiperidinyl) react with Co2(CO)8 to form the cobalt cluster [Co4(CO)7(µ-CO)3{µ3-P(TMP)}] (2) with complete transfer of the phosphinidene unit to cobalt. In contrast, the phosphido complex [Cp*Ru(CO)2{P(Cl)N-i-Pr2}] (1c) affords the spiked-triangular cluster [Cp*RuCo3(CO)8(µ-CO)2(µ3-PN-i-Pr2)] (3), which retains the Cp*Ru unit upon reaction with Co2(CO)8. The molybdenum phosphido complex [CpMo(CO)2{P(Cl)TMP}] (4) reacts with Co2(CO)8 to form cluster 2, while [Cp*Mo(CO)3{P(Cl)N-i-Pr2}] (5) generates the mixed metal tetrahedral cluster [Cp*MoCo3(CO)5(µ-CO)4(µ3-PN-i-Pr2)] (6). Key words: phosphido, phosphinidene, cobalt, ruthenium, molybdenum, cluster.

Mixed-metal chalcogenide tetrahedral clusters with an exo-polyhedral metal fragment

2014 ◽  
Vol 43 (45) ◽  
pp. 17184-17190 ◽  
Author(s):  
K. Yuvaraj ◽  
Dipak Kumar Roy ◽  
V. P. Anju ◽  
Bijnaneswar Mondal ◽  
Babu Varghese ◽  
...  
Keyword(s):  
Metal Chalcogenide ◽  
Mixed Metal ◽  
Metal Fragment

Mixed-metal chalcogenide tetrahedral clusters, [Cp*Ru(CO)2(μ-H){Os3(CO)9}S] and [Cp*Ru(CO)2(μ-H){Ru3(CO)9}S], have been isolated from arachno-[(Cp*RuCO)2B2H6] and [(Cp*Mo)2B5H9] respectively, in which the [Cp*Ru(CO)2] fragment is attached in an exo-polyhedral manner.

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.

Sign in / Sign up

Export Citation Format

Share Document