How feasible is the reversible S-dissociation mechanism for the activation of FeMo-co, the catalytic site of nitrogenase?

2019 ◽  
Vol 48 (4) ◽  
pp. 1251-1262 ◽  
Author(s):  
Ian Dance
Keyword(s):  
Coordination Chemistry ◽  
Catalytic Site ◽  
Dissociation Mechanism ◽  
Enzyme Model

Computations with a large enzyme model describe the coordination chemistry and protein involvement that could support the proposed dissociation of S2B from FeMo-co as part of the mechanism of nitrogenase.

Stereochemically correct catalytic site on cyclodextrin resulting in a better enzyme model

1975 ◽  
Vol 97 (15) ◽  
pp. 4432-4434 ◽  
Author(s):  
Yoshio Iwakura ◽  
Keikichi Uno ◽  
Fujio Toda ◽  
Shigeharu Onozuka ◽  
Kenjiro Hattori ◽  
...  
Keyword(s):  
Catalytic Site ◽  
Enzyme Model

A Peptide Dendrimer Enzyme Model with a Single Catalytic Site at the Core

2007 ◽  
Vol 129 (43) ◽  
pp. 13238-13246 ◽  
Author(s):  
Sacha Javor ◽  
Estelle Delort ◽  
Tamis Darbre ◽  
Jean-Louis Reymond
Keyword(s):  
Catalytic Site ◽  
The Core ◽  
Enzyme Model ◽  
Peptide Dendrimer

ChemInform Abstract: THE STEREOCHEMICALLY CORRECT CATALYTIC SITE ON CYCLODEXTRIN RESULTING IN A BETTER ENZYME MODEL

1975 ◽  
Vol 6 (41) ◽  
pp. no-no
Author(s):  
YOSHIO IWAKURA ◽  
KEIKICHI UNO ◽  
FUJIO TODA ◽  
SHIGEHARU ONOZUKA ◽  
KENJIRO HATTORI ◽  
...  
Keyword(s):  
Catalytic Site ◽  
Enzyme Model

Dual-Function, Light Switchable Cobalt Catalysis via Active Site Metamorphosis

2019 ◽  
Author(s):  
Enrico Bergamaschi ◽  
Frédéric Beltran ◽  
Christopher Teskey
Keyword(s):  
Visible Light ◽  
Active Site ◽  
Catalytic Site ◽  
Dual Function ◽  
Catalytic Systems ◽  
Hydride Complex ◽  
Dual Functional ◽  
Multiple Processes ◽  
Olefin Migration

<p></p><p></p><p>Switchable catalysis offers opportunities to control the rate or selectivity of a reaction <i>via</i> a stimulus such as pH or light. However, few examples of switchable catalytic systems that can facilitate multiple processes exist. Here we report a rare example of such dual-functional, switchable catalysis. Featuring an easily prepared, bench-stable cobalt(I) hydride complex in conjunction with pinacolborane, we can completely alter the reaction outcome between two widely employed transformations – olefin migration and hydroboration – with visible light as the sole trigger. This dichotomy arises from ligand photodissociation which leads to metamorphosis of the active catalytic site, resulting in divergent mechanistic pathways.</p><p></p><p></p>

Fine-Tuning Electronic Properties of Luminescent Pt(II) Complexes via Vertex-Differentiated Coordination of Sterically Invariant Carborane-Based Ligands

2018 ◽  
Author(s):  
Kent O. Kirlikovali ◽  
Jonathan C. Axtell ◽  
Kierstyn Anderson ◽  
Peter I. Djurovich ◽  
Arnold L. Rheingold ◽  
...  
Keyword(s):  
Coordination Chemistry ◽  
Metal Complexes ◽  
Electronic Properties ◽  
Fine Tuning ◽  
Fine Tune

We report the synthesis of two isomeric Pt(II) complexes ligated by doubly deprotonated 1,1′-bis(<i>o</i>-carborane) (<b>bc</b>). This work provides a potential route to fine-tune the electronic properties of luminescent metal complexes by virtue of vertex-differentiated coordination chemistry of carborane-based ligands.

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